Merge branch 'main' of https://gitea.pkm.physik.tu-darmstadt.de/IPKM/python3-damaris

2026-10-19 09:19:39 +02:00
commit 9e42205a4d
@@ -2,8 +2,7 @@ name: Build Debian Packages
 on:
  push:
-    branches: [ "main" ]
+    tags: [ "v*" ]        # releases are tag-driven now
  pull_request:
  workflow_dispatch:
 jobs:
@@ -16,14 +15,14 @@ jobs:
            codename: bookworm
          - target: debian13
            codename: trixie
-    
+
    runs-on: ${{ matrix.target }}
    steps:
      - name: Install Node.js and git
        run: |
          apt-get update
-          apt-get -y install nodejs git lsb-release
+          apt-get -y install nodejs git lsb-release jq
      - name: Checkout repository
        uses: actions/checkout@v3
@@ -31,20 +30,61 @@ jobs:
          github-server-url: https://gitea.pkm.physik.tu-darmstadt.de
      - name: Install build dependencies
-        run: |
+        run: bash requirements.debian
          bash requirements.debian
      - name: Build Package
-        run: |
+        run: dpkg-buildpackage -us -uc -b
          dpkg-buildpackage -us -uc -b
      - name: Collect Artifacts
        run: |
          mkdir -p artifacts
          mv -v ../*.deb artifacts/
-      - name: Upload Artifacts
+      - name: Publish release with assets
-        uses: actions/upload-artifact@v3
+        env:
-        with:
+          GITEA_TOKEN: ${{ secrets.DEB_UPLOAD_TOKEN }}
-          name: python3-damaris-${{ matrix.codename }}.gz
+          SLUG: ${{ gitea.repository }}          # owner/repo
-          path: artifacts/*.deb
+          TAG: ${{ gitea.ref_name }}             # e.g. v1.2.3
          CODENAME: ${{ matrix.codename }}
        run: |
          set -euo pipefail
          API="https://gitea.pkm.physik.tu-darmstadt.de/api/v1"
          AUTH="Authorization: token ${GITEA_TOKEN}"
          # 1. Find an existing release for this tag, if any
          release_id=$(curl -s -H "$AUTH" \
            "$API/repos/$SLUG/releases/tags/$TAG" | jq -r '.id // empty')
          # 2. Create the release if it does not exist yet
          if [ -z "$release_id" ]; then
            echo "Creating release $TAG"
            release_id=$(curl -s -X POST -H "$AUTH" \
              -H "Content-Type: application/json" \
              -d "$(jq -n --arg tag "$TAG" \
                    '{tag_name:$tag, name:$tag, draft:false, prerelease:false}')" \
              "$API/repos/$SLUG/releases" | jq -r '.id')
          else
            echo "Reusing existing release $TAG (id=$release_id)"
          fi
          echo "release_id=$release_id"
          # 3. Upload each .deb as an asset
          for deb in artifacts/*.deb; do
            asset="${CODENAME}_$(basename "$deb")"   # avoid bookworm/trixie name clash
            echo "Uploading $asset"
            # delete any existing asset with the same name (idempotent re-runs)
            existing=$(curl -s -H "$AUTH" \
              "$API/repos/$SLUG/releases/$release_id/assets" \
              | jq -r --arg n "$asset" '.[] | select(.name==$n) | .id')
            if [ -n "$existing" ]; then
              curl -s -X DELETE -H "$AUTH" \
                "$API/repos/$SLUG/releases/$release_id/assets/$existing"
            fi
            curl --fail --show-error --silent \
              -X POST -H "$AUTH" \
              -F "attachment=@$deb;filename=$asset" \
              "$API/repos/$SLUG/releases/$release_id/assets"
          done
@@ -14,6 +14,8 @@ debian/.debhelper
 # Sphinx documentation
 doc/_build/
 doc/_autosummary/
 doc/damaris/
 # Debian build artifacts
 debian/*.debhelper.log
@@ -4,16 +4,17 @@
 This is the front end part of GUI for controlling NMR spectrometers. On "Start", the experiment script executes and creates XML job files. A backend, not in this code, executes these jobs sequentially adn writes the results as XML files. The front end consumes these result files using the result script.
 ## Guidelines
-1. Use the .venv python3 environment
+1. Prefer the system python and notify the user if libraries and packages are missing. Use uv for the python3 environment only if system packages are missing and the user does not want to install the needed packages.
-5. Old code was ported from gtk2 and python2.7. This code has to work on python 3.11 and above, as well as GTK3
+2. Old code was ported from gtk2 and python2.7. This code has to work on python 3.11 and above, as well as GTK3
-2. Be aware the targeted Debian versions are bookworm, trixie, and forky.
+3. Be aware the targeted Debian versions are bookworm, trixie, and forky.
-3. Only use packages and libraries available in Debian bookworm, trixie, and forky. Make sure that the code is compatible with all of these versions.
+4. Only use packages and libraries available in Debian bookworm, trixie, and forky. Make sure that the code is compatible with all of these versions.
-3. Do not commit changes (with git) or write commit messages without asking the user.
+5. Do not commit changes (with git) or write commit messages without asking the user.
-4. Try to minimize code changes, do not use elaborate checks for defensive programming. Ask the user if something should be tested with unit tests.
+6. Try to minimize code changes, do not use elaborate checks for defensive programming. Ask the user if something should be tested with unit tests.
-6. Use the python unittest module for unit tests, not pytest
+7. Use the python unittest module for unit tests, not pytest
-7. Functions for the experiment script belong to the src/damaris/experiments/Experiment.py file
+8. Functions for the experiment script belong to the src/damaris/experiments/Experiment.py file
-8. Functions for the result script belong in the files in the src/damaris/data/ folder
+9. Functions for the result script belong in the files in the src/damaris/data/ folder
-9. The gitea workflow can be found at .gitea/workflows/debian-build.yml
+10. The gitea workflow can be found at .gitea/workflows/debian-build.yml
-10. to not edit anything in "build", it is regenerated
+11. Do not edit anything in "build", it is regenerated
-11. Use sphinx for documentation, autodoc and autosummary is used for references of all classes, functions and modules. 
+12. Use sphinx for documentation, autodoc and autosummary is used for references of all classes, functions and modules. 
-12. If a new function/method is created document a short usage the doc/api_reference.rst and a longer explanation in doc/manual.rst
+13. If a new function/method is created document a short usage in doc/api_reference.rst and a longer explanation in doc/manual.rst
 14. Do not use the Makefile in ./doc/, Doxygen is not used anymore.
@@ -3,3 +3,43 @@
 ## Version bump
 Version is changed in src/damaris/__init__.py
 ### Process
 1. Update the version in `src/damaris/__init__.py`
 2. Add a new changelog entry in `debian/changelog` using the `dch` (debchange) tool
 ### Using dch tool
 The `dch` tool (from the `devscripts` package) is the standard way to maintain debian changelog files. Example workflow:
 ```bash
 # Update version in Python package
 sed -i 's/__version__ = "0.24"/__version__ = "0.25"/' src/damaris/__init__.py
 # Add changelog entry with dch
 dch --newversion 0.25
 # This opens your editor to add the changes for this version
 # Or use batch mode with message:
 dch -v 0.25 "New features and bug fixes"
 # Verify the changelog
 tail -20 debian/changelog
 ```
 The `dch` command will:
 - Create a new entry with the specified version
 - Set the distribution to "stable" (or "unstable" for development versions)
 - Use the maintainer name and email from the previous entry or environment variables
 - Open your editor to add the change descriptions
 For development versions, use:
 ```bash
 dch -v 0.25-1 --distribution unstable "Development version"
 ```
 Remember to install devscripts if needed:
 ```bash
 sudo apt-get install devscripts
 ```
@@ -1,3 +1,32 @@
 python3-damaris (0.25) stable; urgency=medium
  * fixed non working stop button
  * added type hints to data classes, fixed get_ydata override conflict
  * fixed y_square latent bug: kept always a list of per-channel arrays
  * fixed time_period latent crashes: missing time information treated as None
  * replaced remaining gtk2/PyGTK and Python 2 idioms in DamarisGUI
  * fixed startup crash: register GtkSourceView GType for GtkBuilder
  * fixed bug with counter updates
  * FitResult fit overlays, leaked HDF5 files closed after experiment stop
  * HTML documentation is built at package build time and opened from the Help menu
  * crosshair cursor is fast on HiDPI screens (dirty-strip blitting)
 -- Markus Rosenstihl <markus.rosenstihl@pkm.tu-darmstadt.de>  Sun, 18 Oct 2026 19:13:20 +0200
 python3-damaris (0.24) stable; urgency=medium
  * fixed log dump race condition, no more crash at experiment end
  * data pool HDF5 file is now always closed properly
  * Signalpath.phase() no longer modifies data in place, returns object for phase=0 (fixes #43)
  * fixed inconsistencies in returned objects: missing channels, is_clipped
  * fixed accumulation lock leaks and deprecated API usage
  * user plugin directory ~/.config/damaris/plugin added to Python path
  * all output switched to logging module, experiment and result script prints show up in the GUI
  * command line interface fixed and properly added to the deb package
  * performance: incremental writing of HDF5 data pool, reduced polling in synchronize()
 -- Markus Rosenstihl <markus.rosenstihl@pkm.tu-darmstadt.de>  Sun, 18 Oct 2026 11:39:54 +0200
 python3-damaris (0.22) stable; urgency=medium
  * fixed autocomplete in the editor tabs 
@@ -2,7 +2,7 @@ Source: python3-damaris
 Section: science
 Priority: optional
 Maintainer: Markus Rosenstihl <markus.rosenstihl@pkm.tu-darmstadt.de>
-Build-Depends: python3, debhelper, python3-dev, dh-sequence-python3, dpkg-dev, pybuild-plugin-pyproject, sphinx-common, sphinx-rtd-theme-common, python3-sphinxcontrib.bibtex, python3-sphinx-rtd-theme
+Build-Depends: python3, debhelper, python3-dev, dh-sequence-python3, dpkg-dev, pybuild-plugin-pyproject, sphinx-common, python3-sphinx, sphinx-rtd-theme-common, python3-sphinxcontrib.bibtex, python3-sphinx-rtd-theme
 Standards-Version: 3.7.3
 X-Python3-Version: >= 3.5
 Rules-Requires-Root: no
@@ -10,7 +10,7 @@ Rules-Requires-Root: no
 Package: python3-damaris
 Architecture: all
 Provides: damaris-frontend-py3
-Depends: ${python3:Depends}, python3-numpy, python3-scipy, python3-gi, python3-matplotlib, python3-tables, lzop, python3-xdg, libgtksourceview-3.0-1, libgirepository1.0-dev | libgirepository-2.0-dev, breeze-icon-theme
+Depends: ${python3:Depends}, ${sphinxdoc:Depends}, python3-numpy, python3-scipy, python3-gi, python3-matplotlib, python3-tables, lzop, python3-xdg, libgtksourceview-3.0-1, libgirepository1.0-dev | libgirepository-2.0-dev, breeze-icon-theme
 Recommends: damaris-backends, python3-numpy-ext
 Suggests: python3-doc, python3-tables-doc, python3-numpy-doc
 Description: python frontend for DAMARIS project
@@ -1,4 +1,4 @@
-doc/ usr/share/doc/python3-damaris/
+build/html usr/share/doc/python3-damaris/
 debian/damaris3.desktop usr/share/applications/
 src/damaris/gui/DAMARIS3.png usr/share/pixmaps/
 src/damaris/gui/DAMARIS3.ico usr/share/pixmaps/
@@ -17,7 +17,7 @@ DH_ALWAYS_EXCLUDE=CVS:.git:venv:.venv:*.h5
 override_dh_auto_build:
 	dh_auto_build
-	sphinx-build -N -bhtml doc/ build/doc
+	sphinx-build -N -bhtml doc/ build/html
 override_dh_auto_test:
@@ -26,11 +26,13 @@ The data module contains result types, data handling, and signal processing clas
   damaris.data.ADC_Result
   damaris.data.Accumulation
   damaris.data.Config_Result
   damaris.data.DamarisFFT
   damaris.data.DataPool
   damaris.data.Drawable
   damaris.data.Errorable
   damaris.data.Error_Result
   damaris.data.FitResult
   damaris.data.MeasurementResult
   damaris.data.Persistance
   damaris.data.Resultable
@@ -71,6 +73,20 @@ The GUI module contains the graphical interface, backend driver, and experiment/
   damaris.gui.TemperatureMonitor
   damaris.gui.logging_utils
 A short usage example for the font helper of the GUI module (the non-deprecated
 replacement for the removed ``Widget.modify_font()``):
 .. code-block:: python
   from damaris.gui.DamarisGUI import apply_font_css
   apply_font_css(textview, "Monospace 10")   # pango style font description
   apply_font_css(label, "sans bold 16")
 The font string is converted into a CSS rule (``font-family``/``font-size``/
 ``font-weight``) which is applied to the widget's style context with a
 ``Gtk.CssProvider``.
 Tools Module
 ============
@@ -184,3 +184,57 @@ Stability of the DAC has been tested by measuring the shifts of resonance freque
 The offset of the PFG amplifier was adjusted via the offset potentiometer on the DAC board. There is also an offset adjustment possible at the PFG amplifier directly. For adjustment, the signal of water in a sample tube with a 0.5 mm teflon stripe perpendicular to the magnetic field B0 was recorded. First, the PFG power supply has been switched off and the sample was shimmed with the room temperature shims until the longest decay time T*2 of the FID has been achieved. After this, the PFG was switched on and the offset has been adjusted to cause least distortion in the spectrum.
 *******************
 Publish new version
 *******************
 .. warning::
   ``__version__`` in ``src/damaris/__init__.py`` and the top entry of
   ``debian/changelog`` must carry the same version number at every
   release. If they drift apart, the Debian package version no longer
   matches the application version.
 1. Commit all code changes intended for the release.
 2. Bump ``__version__`` in ``src/damaris/__init__.py``. This constant
   is the single source of truth for the application version and
   follows the simple ``X.Y`` scheme used so far (a minor release
   increments the second number, e.g. 0.22 -> 0.23).
 3. Add a new entry at the top of ``debian/changelog`` with the same
   version number and a bullet list of the user visible changes. The
   Debian package version does not follow ``__version__``
   automatically; it is defined solely by this file. Either edit
   ``debian/changelog`` directly or run ``dch`` (from the
   ``devscripts`` package), which prepends the entry for you. Match
   the entry format already used in this file:
   .. code-block:: text
      python3-damaris (X.Y) stable; urgency=medium
        * bullet list of user visible changes
       -- Full Name <email>  Day, DD Mon YYYY HH:MM:SS +0200
   The maintainer line at the end is indented by two spaces and its
   date must be in RFC-2822 format, which ``date -R`` produces.
 4. Commit the version bump and the changelog entry together in one
   commit. The repository currently carries no version tags, so no
   tagging step is defined; confirm with ``git tag -l`` before
   introducing one.
 5. Everything else picks up the new version automatically. The Sphinx
   documentation reads ``damaris.__version__`` in ``doc/conf.py``, and
   ``pyproject.toml`` declares the package version dynamically via
   ``[tool.setuptools.dynamic]`` with ``attr = "damaris.__version__"``,
   so neither needs a manual edit. On a push to ``main`` the Debian CI
   pipeline ``.gitea/workflows/debian-build.yml`` builds the package
   with ``dpkg-buildpackage`` for bookworm and trixie; the version of
   the resulting ``.deb`` is taken from ``debian/changelog``.
 ``DEVELOPER.md`` at the repository root keeps a short note about the
 version bump in ``src/damaris/__init__.py``; this section expands it.
@@ -101,6 +101,12 @@ There are now two possibilities to export the figure:
 2. Saving the data of the plot as CSV file (comma separated values) by pressing the button on the right side of the toolbar under the plot
 Help Menu
 =========
 The **Help** button in the toolbar opens this documentation in the system's web browser. The arrow next to it offers additional local documentations, such as the Python documentation, if installed. When the Debian package is used, the HTML documentation is found in ``/usr/share/doc/python3-damaris/html/``.
 Accumulation
 ============
@@ -285,6 +291,35 @@ A typical method to already extract data like amplitudes etc. is possible by usi
 Essentially, a dictionary "measurement" is created with *tau* as the key. For each new key the current magnetization is added. This dictionary is then added to the data pool. The advantage over the previous listing is that the magnetization vs. τ curve can be directly displayed in order to gain an overview of the running experiment, because the "measurement" dictionary is added to the data pool. In this example, the value also stores statistics from the accumulation. The data dictionary is stored automatically as described before, including the result and experiment scripts, information about the used back end and a timeline of the experiment.
 **Displaying fits**
 A fit to a measurement can be shown as an overlay on the measurement curve using the FitResult class. In contrast to the measurement itself, a fit has its own x-values, independent of the measured data points. Therefore the fit can be sampled on a much denser x-grid, which makes the plotted curve smooth. The fit is stored in the data pool under its own key and is drawn by the GUI on top of the measurement it belongs to. Fit parameters are shown in the plot and are stored together with the fit.
 The fit is associated with its measurement in two ways: by the ``source`` argument (the data pool key of the measurement) and, optionally, by storing it under a nested key such as ``"Magnetization(tau)/fit"``, so that it is stored next to the measurement in the HDF5 data pool file. The GUI shows the fit only as an overlay on its measurement; fits do not get their own entry in the display tree.
 .. code-block:: python
   :linenos:
   import numpy
   from damaris import FitResult
   def result(results):
       # ... fill "measurement" as in the listing above ...
       # fit an exponential decay to the measured points
       from scipy.optimize import curve_fit
       [k, v, e] = measurement.get_errorplotdata()
       popt, pcov = curve_fit(lambda t, m0, t1: m0 * numpy.exp(-t / t1),
                              k, v, p0=(v[0], 1.0), sigma=e)
       # sample the fit on a dense x-grid for a smooth curve
       xfit = numpy.linspace(k.min(), k.max(), 200)
       fit = FitResult(xfit, popt[0] * numpy.exp(-xfit / popt[1]),
                       title="Magnetization(tau) fit",
                       source="Magnetization(tau)",
                       params={"M0": popt[0], "T1": popt[1]})
       data["Magnetization(tau)/fit"] = fit
 The fit is written to the HDF5 data pool file as its own table (columns *x* and *y*, plus *y_err* if given), together with the fit parameters as attributes, and is restored when the data pool is read back.
 Note that we can also create a HDF5 file from scratch! In this case experiment and result script are not saved in the resulting file. The advantage is that one can create arbitrary complex structured files at the cost of having a more complicated result script.
 .. code-block:: python
@@ -313,6 +348,10 @@ The change is *in-place*, which means if the timesignal is needed later on, a co
 - **clip(start=**\ *None* **, stop=**\ *None* **)**
   Only the data between start and stop is returned.
   The start and stop parameters can be either in time or frequency domain.
   Calling **clip()** without any argument is a placeholder that leaves the
   object unchanged (useful in scripted processing chains). If only one bound
   is given, the missing one defaults to the first resp. last data point and
   reversed bounds (start > stop) are swapped automatically.
 - **baseline(lastpart=**\ *0.1* **)**
   This method should be applied first as it corrects the baseline of the signal, taking the last part of the signal for determining the correction.
@@ -374,6 +413,12 @@ To use this methods one has to apply consecutively the methods to an *timesignal
 This applies baseline correction using the last 40% of the timesignal for determination of the signal. Then, an exponential window is applied. From this timesignal an FFT is calculated which is further clipped to view to the data between -1 kHz with 1 kHz width.
 Operators and Copies of Data Objects
 ====================================
 The arithmetic operators (``+``, ``-``, ``*``, ``/``, ``//``, ``**``, unary ``-``) of **ADC_Result** and **Accumulation** objects return *new* objects: the operands are never modified and the data arrays of the result are independent copies, so later in-place operations (``+=``, ``*=``, ...) on the result cannot corrupt the operands. The channel metadata is carried over to the result: an **ADC_Result** result keeps the same ``get_nChannels()`` and ``is_clipped`` flag as its operand, and an **Accumulation** result keeps (and merges) the ``job_ids`` provenance of both operands. Adding an unsupported type or negating an empty accumulation raises a ``ValueError`` instead of silently returning *None*. In the same spirit, ``Config_Result(config=..., desc=...)`` stores the given dictionaries in the constructor, and ``measurementresult + 0`` returns an independent deep copy of the result object.
 Good Practices
 ==============
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 [project]
 name = "python3-damaris"
-version = "0.22"
+version = "0.25"
 requires-python = ">= 3.11"
 description = "Python 3 frontend for DAMARIS (DArmstadt MAgnetic Resonance Instrument Software)"
 license = {text = "GPL-2.0"}
@@ -39,6 +39,9 @@ maintainers = [
 [project.scripts]
 DAMARIS3 = "damaris.__main__:main"
 [dependency-groups]
 dev = ["pyrefly"]
 [tool.setuptools.packages.find]
 where = ["src"]
@@ -50,6 +53,18 @@ version = {attr = "damaris.__version__"}
 [tool.setuptools.data-files]
 "share/python3-damaris/images" = ["src/damaris/gui/DAMARIS3.png", "src/damaris/gui/DAMARIS3.ico"]
 [tool.pyrefly]
 project-includes = [
    "src/damaris/experiments/Experiment.py",
    "src/damaris/experiments/dac.py",
    "src/damaris/data/ADC_Result.py",
    "src/damaris/data/MeasurementResult.py",
    "src/damaris/data/Accumulation.py",
 ]
 search-path = ["src"]
 python-version = "3.11"
 python-platform = "linux"
 #"share/python3-damaris/doc" = ["doc/index.html"]
 #"share/python3-damaris/doc/reference-html" = ["doc/reference-html/*"]
 #"share/python3-damaris/doc/tutorial-html" = ["doc/tutorial-html/*"]
@@ -1,7 +1,7 @@
 #!/bin/bash
 apt-get -y install libcairo2-dev gir1.2-gtksource-3.0 hdf5-tools
 apt-get -y install python3-dev python3-scipy python3-lmfit python3-matplotlib python3-tables python3-xdg  python3-setuptools python3-sphinx-rtd-theme
-apt-get -y install debhelper dh-sequence-python3 lsb-release sphinx-common pybuild-plugin-pyproject python3-sphinxcontrib.bibtex
+apt-get -y install debhelper dh-sequence-python3 lsb-release sphinx-common python3-sphinx pybuild-plugin-pyproject python3-sphinxcontrib.bibtex
 DEBRELEASE=$(lsb_release -cs)
 case $DEBRELEASE in
  "trixie")
@@ -15,7 +15,7 @@
 ## module contents
 #
-__version__ = "0.23"
+__version__ = "0.25"
 __all__=["experiments", "data", "gui"]
 import sys
@@ -1,5 +1,7 @@
 # -*- coding: iso-8859-1 -*-
 from __future__ import annotations
 from .Resultable import Resultable
 from .Drawable import Drawable
 from .Signalpath import Signalpath
@@ -9,7 +11,13 @@ import numpy
 import sys
 import datetime
 import tables
 from typing import IO
 from scipy.signal import filtfilt, remez
 _XArray = numpy.ndarray | list
 _YChannels = list[numpy.ndarray]
 _IndexList = list[tuple[int, int]]
 _Description = dict[str, str]
 #############################################################################
 #                                                                           #
 # Name: Class ADC_Result                                                    #
@@ -39,7 +47,7 @@ class ADC_Result(Resultable, Drawable, DamarisFFT, Signalpath):
        sampling_rate: Sampling frequency of the ADC data.
        job_id: identifier for the job that generated this result.
    """
-    def __init__(self, x = None, y:list = None, index = None, sampl_freq = None, desc = None, job_id = None, job_date = None):
+    def __init__(self, x: _XArray | None = None, y: _YChannels | None = None, index: _IndexList | None = None, sampl_freq: float | None = None, desc: _Description | None = None, job_id: int | None = None, job_date: datetime.datetime | None = None):
        Resultable.__init__(self)
        Drawable.__init__(self)
@@ -59,7 +67,7 @@ class ADC_Result(Resultable, Drawable, DamarisFFT, Signalpath):
            self.cont_data = False
            self.sampling_rate = 0
            self.index = []
-            self.x = []
+            self.x = numpy.array([], dtype="float32")
            self.y = []
        # using all arguments for initialization
        elif (x is not None) and (y is not None) and (index is not None) and (sampl_freq is not None) and (desc is not None) and (job_id is not None) and (job_date is not None):
@@ -67,8 +75,8 @@ class ADC_Result(Resultable, Drawable, DamarisFFT, Signalpath):
            #for ch in y:
            #    if not numpy.issubdtype(ch.dtype, numpy.integer):
            #        raise TypeError("TypeError: ADC_Result y data must be a list with integer type channels")
-            self.x = x
+            self.x = numpy.asarray(x)
-            self.y = y
+            self.y = [numpy.asarray(ch) for ch in y]
            self.index = index
            self.sampling_rate = sampl_freq
            self.cont_data = True
@@ -87,7 +95,7 @@ class ADC_Result(Resultable, Drawable, DamarisFFT, Signalpath):
            raise ValueError("Wrong usage of __init__!")
-    def create_data_space(self, channels, samples):
+    def create_data_space(self, channels: int, samples: int) -> None:
        "Initialises the internal data-structures"
        if self.contains_data():
@@ -104,12 +112,12 @@ class ADC_Result(Resultable, Drawable, DamarisFFT, Signalpath):
        self.cont_data = True
-    def contains_data(self):
+    def contains_data(self) -> bool:
        """Returns true if ADC_Result contains data. (-> create_data_space() was called)"""
        return self.cont_data
-    def check_clipping(self, bit_depth=None):
+    def check_clipping(self, bit_depth: int | None = None) -> bool:
        """
        Check if any data in y is clipped.
        For a 14-bit ADC, clipping occurs at 2**13 (8192) or 2**13-1 (8191).
@@ -147,7 +155,7 @@ class ADC_Result(Resultable, Drawable, DamarisFFT, Signalpath):
        return self.is_clipped
-    def lowpass(self, cutoff, numtaps=None):
+    def lowpass(self, cutoff: float, numtaps: int | None = None) -> ADC_Result:
        """
        Apply a zero-phase lowpass FIR filter to all channels.
@@ -232,15 +240,14 @@ class ADC_Result(Resultable, Drawable, DamarisFFT, Signalpath):
                job_id=self.job_id,
                job_date=self.job_date,
            )
-            r.nChannels = self.nChannels
+            self._copy_metadata(r)
            r.is_clipped = self.is_clipped
        finally:
            self.lock.release()
        return r
-    def add_sample_space(self, samples):
+    def add_sample_space(self, samples: int) -> None:
        "Adds space for n samples, where n can also be negative (deletes space). New space is filled up with \"0\""
        self.lock.acquire()
@@ -260,7 +267,7 @@ class ADC_Result(Resultable, Drawable, DamarisFFT, Signalpath):
        self.lock.release()
-    def get_result_by_index(self, index):
+    def get_result_by_index(self, index: int) -> ADC_Result:
        self.lock.acquire()
        try:
@@ -277,39 +284,38 @@ class ADC_Result(Resultable, Drawable, DamarisFFT, Signalpath):
            tmp_y.append(self.y[i][start:end+1].copy())
        r = ADC_Result(x = tmp_x, y = tmp_y,  index = [(0,len(tmp_y[0])-1)], sampl_freq = self.sampling_rate, desc = self.description.copy() if self.description is not None else None, job_id = self.job_id, job_date = self.job_date)
-        r.nChannels = self.nChannels
+        self._copy_metadata(r)
        r.is_clipped = self.is_clipped
        self.lock.release()
        return r
-    def get_sampling_rate(self):
+    def get_sampling_rate(self) -> float:
        """Returns the samplingfrequency"""
        return self.sampling_rate + 0
-    def set_sampling_rate(self, hz):
+    def set_sampling_rate(self, hz: float) -> None:
        """Sets the samplingfrequency in hz"""
        self.sampling_rate = float(hz)
-    def get_nChannels(self):
+    def get_nChannels(self) -> int:
        """Gets the number of channels"""
        return self.nChannels + 0
-    def set_nChannels(self, channels):
+    def set_nChannels(self, channels: int) -> None:
        """Sets the number of channels"""
        self.nChannels = int(channels)
-    def get_index_bounds(self, index):
+    def get_index_bounds(self, index: int) -> tuple[int, int]:
        "Returns a tuple with (start, end) of the wanted result"
        return self.index[index]
-    def uses_statistics(self):
+    def uses_statistics(self) -> bool:
        return False
-    def write_to_csv(self, destination=sys.stdout, delimiter=" "):
+    def write_to_csv(self, destination: str | IO[str] = sys.stdout, delimiter: str = " ") -> None:
        """
        writes the data to a file or to sys.stdout
        destination can be a file or a filename
@@ -321,7 +327,7 @@ class ADC_Result(Resultable, Drawable, DamarisFFT, Signalpath):
        else:
            self._write_to_csv_dest(destination, delimiter)
-    def _write_to_csv_dest(self, dest, delimiter):
+    def _write_to_csv_dest(self, dest: IO[str], delimiter: str) -> None:
        dest.write("# adc_result\n")
        dest.write("# t y0 y1 ...\n")
        self.lock.acquire()
@@ -337,7 +343,7 @@ class ADC_Result(Resultable, Drawable, DamarisFFT, Signalpath):
        finally:
            self.lock.release()
-    def write_to_simpson(self, destination=sys.stdout, delimiter=" "):
+    def write_to_simpson(self, destination: str | IO[str] = sys.stdout, delimiter: str = " ") -> None:
        """
        writes the data to a text file or sys.stdout in Simpson format,
        for further processing with the NMRnotebook software;
@@ -349,7 +355,7 @@ class ADC_Result(Resultable, Drawable, DamarisFFT, Signalpath):
        else:
            self._write_to_simpson_dest(destination, delimiter)
-    def _write_to_simpson_dest(self, dest, delimiter):
+    def _write_to_simpson_dest(self, dest: IO[str], delimiter: str) -> None:
        self.lock.acquire()
        try:
            xdata=self.get_xdata()
@@ -368,7 +374,7 @@ class ADC_Result(Resultable, Drawable, DamarisFFT, Signalpath):
        finally:
            self.lock.release()
-    def write_to_hdf(self, hdffile, where, name, title, complib=None, complevel=None):
+    def write_to_hdf(self, hdffile: tables.File, where: str, name: str, title: str, complib: str | None = None, complevel: int | None = None) -> None:
        accu_group=hdffile.create_group(where=where,name=name,title=title)
        accu_group._v_attrs.damaris_type="ADC_Result"
        if self.contains_data():
@@ -465,13 +471,13 @@ class ADC_Result(Resultable, Drawable, DamarisFFT, Signalpath):
    # Ueberladen von Operatoren und Built-Ins -------------------------------------------------------
-    def __len__(self):
+    def __len__(self) -> int:
        "Redefining len(ADC_Result obj), returns the number of samples in one channel and 0 without data"
        if len(self.y)>0:
            return len(self.y[0])
        return 0
-    def __repr__(self):
+    def __repr__(self) -> str:
        """
        writes job meta data and data to string returned
        """
@@ -488,7 +494,12 @@ class ADC_Result(Resultable, Drawable, DamarisFFT, Signalpath):
        return tmp_string
-    def __add__(self, other):
+    def _copy_metadata(self, r: ADC_Result) -> None:
        "Copy channel metadata (nChannels, is_clipped) from self to the new result r"
        r.nChannels = self.nChannels
        r.is_clipped = self.is_clipped
    def __add__(self, other: int | float) -> ADC_Result:
        "Redefining self + other (scalar)"
        if isinstance(other, int) or isinstance(other, float):
            self.lock.acquire()
@@ -498,6 +509,7 @@ class ADC_Result(Resultable, Drawable, DamarisFFT, Signalpath):
                tmp_y.append(numpy.array(self.y[i], dtype="float32") + other)
            r = ADC_Result(x = self.x[:], y = tmp_y, index = self.index[:], sampl_freq = self.sampling_rate, desc = self.description, job_id = self.job_id, job_date = self.job_date)
            self._copy_metadata(r)
            self.lock.release()
            return r
        else:
@@ -505,12 +517,12 @@ class ADC_Result(Resultable, Drawable, DamarisFFT, Signalpath):
-    def __radd__(self, other):
+    def __radd__(self, other: int | float) -> ADC_Result:
        "Redefining other (scalar) + self"
        return self.__add__(other)
-    def __sub__(self, other):
+    def __sub__(self, other: int | float) -> ADC_Result:
        "Redefining self - other (scalar)"
        if isinstance(other, int) or isinstance(other, float):
            self.lock.acquire()
@@ -520,6 +532,7 @@ class ADC_Result(Resultable, Drawable, DamarisFFT, Signalpath):
                tmp_y.append(numpy.array(self.y[i], dtype="float32") - other)
            r = ADC_Result(x = self.x[:], y = tmp_y, index = self.index[:], sampl_freq = self.sampling_rate, desc = self.description, job_id = self.job_id, job_date = self.job_date)
            self._copy_metadata(r)
            self.lock.release()
            return r
        else:
@@ -527,7 +540,7 @@ class ADC_Result(Resultable, Drawable, DamarisFFT, Signalpath):
-    def __rsub__(self, other):
+    def __rsub__(self, other: int | float) -> ADC_Result:
        "Redefining other (scalar) - self"
        if isinstance(other, int) or isinstance(other, float):
            self.lock.acquire()
@@ -537,6 +550,7 @@ class ADC_Result(Resultable, Drawable, DamarisFFT, Signalpath):
                tmp_y.append(other - numpy.array(self.y[i], dtype="float32"))
            r = ADC_Result(x = self.x[:], y = tmp_y, index = self.index[:], sampl_freq = self.sampling_rate, desc = self.description, job_id = self.job_id, job_date = self.job_date)
            self._copy_metadata(r)
            self.lock.release()
            return r
        else:
@@ -544,7 +558,7 @@ class ADC_Result(Resultable, Drawable, DamarisFFT, Signalpath):
-    def __mul__(self, other):
+    def __mul__(self, other: int | float) -> ADC_Result:
        "Redefining self * other (scalar)"
        if isinstance(other, int) or isinstance(other, float):
            self.lock.acquire()
@@ -554,18 +568,19 @@ class ADC_Result(Resultable, Drawable, DamarisFFT, Signalpath):
                tmp_y.append(numpy.array(self.y[i], dtype="float32") * other)
            r = ADC_Result(x = self.x[:], y = tmp_y, index = self.index[:], sampl_freq = self.sampling_rate, desc = self.description, job_id = self.job_id, job_date = self.job_date)
            self._copy_metadata(r)
            self.lock.release()
            return r
        else:
            raise ValueError(f"ValueError: Cannot multiply \"{other.__class__}\" to ADC-Result!")
-    def __rmul__(self, other):
+    def __rmul__(self, other: int | float) -> ADC_Result:
        "Redefining other (scalar) * self"
        return self.__mul__(other)
-    def __pow__(self, other):
+    def __pow__(self, other: int | float) -> ADC_Result:
        "Redefining self ** other (scalar)"
        if isinstance(other, int) or isinstance(other, float):
            self.lock.acquire()
@@ -575,12 +590,13 @@ class ADC_Result(Resultable, Drawable, DamarisFFT, Signalpath):
                tmp_y.append(numpy.array(self.y[i], dtype="float32") ** other)
            r = ADC_Result(x = self.x[:], y = tmp_y, index = self.index[:], sampl_freq = self.sampling_rate, desc = self.description, job_id = self.job_id, job_date = self.job_date)
            self._copy_metadata(r)
            self.lock.release()
            return r
        else:
            raise ValueError(f"ValueError: Cannot power raise \"{other.__class__}\" to ADC-Result!")
-    def __truediv__(self, other):
+    def __truediv__(self, other: int | float) -> ADC_Result:
        "Redefining self / other (scalar)"
        if isinstance(other, int) or isinstance(other, float):
            self.lock.acquire()
@@ -589,12 +605,13 @@ class ADC_Result(Resultable, Drawable, DamarisFFT, Signalpath):
                tmp_y.append(numpy.array(self.y[i], dtype="float32") / other)
            r = ADC_Result(x = self.x[:], y = tmp_y, index = self.index[:], sampl_freq = self.sampling_rate, desc = self.description, job_id = self.job_id, job_date = self.job_date)
            self._copy_metadata(r)
            self.lock.release()
            return r
        else:
            raise ValueError(f"ValueError: Cannot divide \"{other.__class__}\" to ADC-Result!")
-    def __rtruediv__(self, other):
+    def __rtruediv__(self, other: int | float) -> ADC_Result:
        "Redefining other (scalar) / self"
        if isinstance(other, int) or isinstance(other, float):
            self.lock.acquire()
@@ -602,45 +619,48 @@ class ADC_Result(Resultable, Drawable, DamarisFFT, Signalpath):
            for i in range(self.get_number_of_channels()):
                tmp_y.append(other / numpy.array(self.y[i], dtype="float32"))
            r = ADC_Result(x = self.x[:], y = tmp_y, index = self.index[:], sampl_freq = self.sampling_rate, desc = self.description, job_id = self.job_id, job_date = self.job_date)
            self._copy_metadata(r)
            self.lock.release()
            return r
        else:
            raise ValueError(f"ValueError: Cannot divide \"{other.__class__}\" to ADC-Result!")
-    def __floordiv__(self, other):
+    def __floordiv__(self, other: int) -> ADC_Result:
        "Redefining self // other (scalar)"
        if isinstance(other, float):
            raise ValueError("ValueError: Cannot use floor division (//) on floats! Use \"/\" instead of \"//\"! ")
        if isinstance(other, int):
            self.lock.acquire()
-            tmp_y = []
+            tmp_y: list[numpy.ndarray] = []
            for i in range(self.get_number_of_channels()):
                tmp_y.append(numpy.array(self.y[i], dtype="float32") // other)
            r = ADC_Result(x = self.x[:], y = tmp_y, index = self.index[:], sampl_freq = self.sampling_rate, desc = self.description, job_id = self.job_id, job_date = self.job_date)
            self._copy_metadata(r)
            self.lock.release()
            return r
        else:
            raise ValueError(f"ValueError: Cannot divide \"{other.__class__}\" to ADC-Result!")
-    def __rfloordiv__(self, other):
+    def __rfloordiv__(self, other: int) -> ADC_Result:
        "Redefining other (scalar) // self"
        if isinstance(other, float):
            raise ValueError("ValueError: Cannot use floor division (//) on floats! Use \"/\" instead of \"//\"! ")
        if isinstance(other, int):
            self.lock.acquire()
-            tmp_y = []
+            tmp_y: list[numpy.ndarray] = []
            for i in range(self.get_number_of_channels()):
                tmp_y.append(other // numpy.array(self.y[i], dtype="float32"))
            r = ADC_Result(x = self.x[:], y = tmp_y, index = self.index[:], sampl_freq = self.sampling_rate, desc = self.description, job_id = self.job_id, job_date = self.job_date)
            self._copy_metadata(r)
            self.lock.release()
            return r
        else:
            raise ValueError(f"ValueError: Cannot divide \"{other.__class__}\" to ADC-Result!")
-    def __neg__(self):
+    def __neg__(self) -> ADC_Result:
        "Redefining -self"
        self.lock.acquire()
        tmp_y = []
@@ -649,11 +669,12 @@ class ADC_Result(Resultable, Drawable, DamarisFFT, Signalpath):
            tmp_y.append(numpy.array(-self.y[i]))
        r = ADC_Result(x = self.x[:], y = tmp_y, index = self.index[:], sampl_freq = self.sampling_rate, desc = self.description, job_id = self.job_id, job_date = self.job_date)
        self._copy_metadata(r)
        self.lock.release()
        return r
-def read_from_hdf(hdf_node):
+def read_from_hdf(hdf_node: object) -> ADC_Result | None:
    """
    read accumulation data from HDF node and return it.
    """
@@ -703,6 +724,7 @@ def read_from_hdf(hdf_node):
    adc.cont_data=True
    # now do the real data
    adc_data=hdf_node.adc_data.read()
    adc.set_nChannels(adc_data.shape[1])
    adc.x=numpy.arange(adc_data.shape[0], dtype="float32")/adc.sampling_rate
@@ -25,6 +25,12 @@ import datetime # added by Oleg Petrov
 import ctypes   # added by Oleg Petrov
 import struct   # added by Oleg Petrov
 import os       # added by Oleg Petrov
 from typing import IO
 _XArray = numpy.ndarray | list
 _YChannels = list[numpy.ndarray]
 _IndexList = list[tuple[int, int]]
 _Description = dict[str, str]
 class Accumulation(Errorable, Drawable, DamarisFFT, Signalpath):
@@ -50,7 +56,7 @@ class Accumulation(Errorable, Drawable, DamarisFFT, Signalpath):
    x (list): The x-axis data points.
    y (list): The y-axis data points.
    """
-    def __init__(self, x = None, y = None, y_2 = None, n = None, index = None, sampl_freq = None, error = False):
+    def __init__(self, x: _XArray | None = None, y: _YChannels | None = None, y_2: _YChannels | numpy.ndarray | None = None, n: int | None = None, index: _IndexList | None = None, sampl_freq: float | None = None, error: bool = False) -> None:
        Errorable.__init__(self)
        Drawable.__init__(self)
@@ -64,14 +70,15 @@ class Accumulation(Errorable, Drawable, DamarisFFT, Signalpath):
        self.is_clipped = False
        self.common_descriptions=None
-        self.time_period=[]
+        self.time_period: list[datetime.datetime] | None = []
        self.job_id = None  # this does not make sense for an object accumulated from multiple job_ids
        self.job_ids = {}
        self.use_error = error
        if self.uses_statistics():
            if (y_2 is not None):
-                self.y_square = y_2
+                # y_square is always kept as a list of per-channel arrays
                self.y_square: _YChannels = [numpy.asarray(ch) for ch in y_2]
            elif (y_2 is None) :
                self.y_square = []
            else:
@@ -86,12 +93,12 @@ class Accumulation(Errorable, Drawable, DamarisFFT, Signalpath):
            self.cont_data = False
            self.index = []
-            self.x = []
+            self.x = numpy.array([], dtype="float32")
            self.y = []
        elif (x is not None) and (y is not None) and (index is not None) and (sampl_freq is not None) and (n is not None):
-            self.x = x
+            self.x = numpy.asarray(x)
-            self.y = y
+            self.y = [numpy.asarray(ch) for ch in y]
            self.sampling_rate = sampl_freq
            self.n = n
@@ -102,7 +109,15 @@ class Accumulation(Errorable, Drawable, DamarisFFT, Signalpath):
        else:
            raise ValueError("Wrong usage of __init__!")
-    def get_accu_by_index(self, index: int):
+    def _copy_provenance(self, r: "Accumulation") -> None:
        r.is_clipped = self.is_clipped
        r.job_id = self.job_id
        r.job_ids = self.job_ids.copy()
        r.time_period = self.time_period[:] if self.time_period is not None else None
        if self.common_descriptions is not None:
            r.common_descriptions = self.common_descriptions.copy()
    def get_accu_by_index(self, index: int) -> "Accumulation":
        self.lock.acquire()
        try:
            start = self.index[index][0]
@@ -124,19 +139,19 @@ class Accumulation(Errorable, Drawable, DamarisFFT, Signalpath):
                r.y_square.append(self.y_square[i][start:end+1].copy())
        if self.common_descriptions is not None:
            r.common_descriptions = self.common_descriptions.copy()
-        r.time_period = self.time_period[:]
+        r.time_period = self.time_period[:] if self.time_period is not None else None
        r.job_ids = self.job_ids.copy()
        r.is_clipped = self.is_clipped
        self.lock.release()
        return r
-    def get_result_by_index(self, index):
+    def get_result_by_index(self, index: int) -> "Accumulation":
        return self.get_accu_by_index(index)
-    def get_Result_by_index(self, index):
+    def get_Result_by_index(self, index: int) -> "Accumulation":
        return self.get_accu_by_index(index)
-    def get_ysquare(self, channel):
+    def get_ysquare(self, channel: int) -> numpy.ndarray | None:
        if self.uses_statistics():
            try:
                return self.y_square[channel]
@@ -164,15 +179,15 @@ class Accumulation(Errorable, Drawable, DamarisFFT, Signalpath):
    # external interface  --------------------------------------------------------------------
-    def get_yerr(self, channel):
+    def get_yerr(self, channel: int) -> numpy.ndarray:
        """
        return error (std.dev/sqrt(n)) of mean
        """
        if not self.contains_data():
            return numpy.array([], dtype="float32")
        if not self.uses_statistics():
            return numpy.zeros((len(self.y[0]),),dtype="float32")
        if not self.contains_data():
            return []
        self.lock.acquire()
        if self.n < 2:
@@ -188,13 +203,13 @@ class Accumulation(Errorable, Drawable, DamarisFFT, Signalpath):
        # sample standard deviation / sqrt(n)
        return numpy.nan_to_num(numpy.sqrt(variance_over_n))
-    def get_ydata(self, channel):
+    def get_ydata(self, channel: int = 0) -> numpy.ndarray:
        """
        return mean data
        """
        if not self.contains_data():
-            return []
+            return numpy.array([], dtype="float32")
        self.lock.acquire()
        try:
            tmp_y = self.y[channel] / self.n
@@ -206,7 +221,7 @@ class Accumulation(Errorable, Drawable, DamarisFFT, Signalpath):
        return tmp_y
-    def get_ymin(self):
+    def get_ymin(self) -> float|int:
        if not self.contains_data():
            return 0
@@ -241,10 +256,10 @@ class Accumulation(Errorable, Drawable, DamarisFFT, Signalpath):
        self.lock.release()
        return max(tmp_max)
-    def get_job_id(self) -> int:
+    def get_job_id(self) -> int | None:
        return self.job_id # modified by Oleg Petrov
-    def write_to_csv(self, destination=sys.stdout, delimiter=" "):
+    def write_to_csv(self, destination: str | IO[str] = sys.stdout, delimiter: str = " ") -> None:
        """
        writes the data to a file.
        destination can be a filehandle or a filename, default sys.stdout
@@ -255,7 +270,7 @@ class Accumulation(Errorable, Drawable, DamarisFFT, Signalpath):
        else:
            self._write_to_csv_dest(destination, delimiter)
-    def _write_to_csv_dest(self, dest, delimiter):
+    def _write_to_csv_dest(self, dest: IO[str], delimiter: str) -> None:
        dest.write("# accumulation %d\n"%self.n)
        self.lock.acquire()
        try:
@@ -288,7 +303,7 @@ class Accumulation(Errorable, Drawable, DamarisFFT, Signalpath):
            self.lock.release()
 # ------------- added by Oleg Petrov, 14 Feb 2012 ----------------------
-    def write_to_simpson(self, destination=sys.stdout, delimiter=" ", frequency=100e6):
+    def write_to_simpson(self, destination: str | IO[str] = sys.stdout, delimiter: str = " ", frequency: float = 100e6) -> None:
        """
        writes the data to a text file or sys.stdout in Simpson format,
        for further processing with the NMRnotebook software;
@@ -300,7 +315,7 @@ class Accumulation(Errorable, Drawable, DamarisFFT, Signalpath):
        else:
            self._write_to_simpson_dest(destination, delimiter, frequency)
-    def _write_to_simpson_dest(self, dest, delimiter, frequency):
+    def _write_to_simpson_dest(self, dest: IO[str], delimiter: str, frequency: float) -> None:
        self.lock.acquire()
        try:
            xdata=self.get_xdata()
@@ -321,11 +336,11 @@ class Accumulation(Errorable, Drawable, DamarisFFT, Signalpath):
            self.lock.release()        
 # ------------- added by Oleg Petrov, 10 Sep 2013 -----------------------
-    def write_to_tecmag(self, destination=sys.stdout, nrecords=1,\
+    def write_to_tecmag(self, destination = sys.stdout, nrecords: int = 1,\
-                                                      frequency=100.,\
+                                                       frequency: float = 100.,\
-                                                      last_delay = 1.,\
+                                                       last_delay: float = 1.,\
-                                                      receiver_phase=0.,\
+                                                       receiver_phase: float = 0.,\
-                                                      nucleus='1H'):
+                                                       nucleus: str = '1H') -> None:
        """
        writes the data to a binary file in TecMag format;
        destination can be a file object or a filename;
@@ -354,6 +369,8 @@ class Accumulation(Errorable, Drawable, DamarisFFT, Signalpath):
            base_freq = [frequency, frequency, 0., 0.] 
            offset_freq = [0., 0., 0., 0.]
            ob_freq = [sum(x) for x in zip(base_freq, offset_freq)]
            if self.time_period is None or len(self.time_period)==0:
                raise ValueError("write_to_tecmag: no time information available")
            date = self.time_period[0].strftime("%Y/%m/%d %H:%M:%S")
            # data handling:
@@ -448,7 +465,7 @@ class Accumulation(Errorable, Drawable, DamarisFFT, Signalpath):
 # -----------------------------------------------------------------------
-    def write_to_hdf(self, hdffile, where, name, title, complib=None, complevel=None):
+    def write_to_hdf(self, hdffile: tables.File, where: str, name: str, title: str, complib: str | None = None, complevel: int | None = None) -> None:
        """
        Write the accumulation data to an HDF5 file.
@@ -609,7 +626,7 @@ class Accumulation(Errorable, Drawable, DamarisFFT, Signalpath):
        return tmp_string
-    def __add__(self, other):
+    def __add__(self, other: "int | float | ADC_Result | Accumulation | None") -> "Accumulation":
        """
        Redefining self + other
        We define this for different types of other:
@@ -637,12 +654,7 @@ class Accumulation(Errorable, Drawable, DamarisFFT, Signalpath):
                    r = Accumulation(x = numpy.array(self.x, dtype="float32"), y = tmp_y, y_2 = tmp_ysquare, n = self.n, index = self.index, sampl_freq = self.sampling_rate, error = self.use_error)
                else:
                    r = Accumulation(x = numpy.array(self.x, dtype="float32"), y = tmp_y, n = self.n, index = self.index, sampl_freq = self.sampling_rate, error = self.use_error)
-                r.is_clipped = self.is_clipped
+                self._copy_provenance(r)
                r.job_id = self.job_id
                r.job_ids = self.job_ids.copy()
                r.time_period = self.time_period[:] if self.time_period is not None else None
                if self.common_descriptions is not None:
                    r.common_descriptions = self.common_descriptions.copy()
                self.lock.release()
                return r
@@ -669,7 +681,7 @@ class Accumulation(Errorable, Drawable, DamarisFFT, Signalpath):
                    r = Accumulation(x = numpy.array(other.x, dtype="float32"), y = tmp_y, index = other.index, sampl_freq = other.sampling_rate, n = 1, error = False)
                if hasattr(other, "is_clipped"):
                    r.is_clipped = other.is_clipped
-                r.time_period=[other.job_date,other.job_date]
+                r.time_period=[other.job_date,other.job_date] if other.job_date is not None else None
                r.job_id = other.job_id
                r.common_descriptions=other.description.copy()
                r.job_ids[other.job_id] = other.get_job_date()
@@ -678,8 +690,6 @@ class Accumulation(Errorable, Drawable, DamarisFFT, Signalpath):
            # Other and self not empty (self + other ADC_Result)
            else:
                self.lock.acquire()
                if self.sampling_rate != other.get_sampling_rate():
                    raise ValueError("Accumulation: You cant add ADC_Results with different sampling-rates")
                if len(self.y[0]) != len(other):
@@ -690,6 +700,8 @@ class Accumulation(Errorable, Drawable, DamarisFFT, Signalpath):
                    if self.index[i] != other.get_index_bounds(i):
                        raise ValueError("Accumulation: You cant add ADC_Results with different indexing")
                self.lock.acquire()
                tmp_y = []
                tmp_ysquare = []
@@ -703,10 +715,13 @@ class Accumulation(Errorable, Drawable, DamarisFFT, Signalpath):
                else:
                    r = Accumulation(x = numpy.array(self.x, dtype="float32"), y = tmp_y, n = self.n + 1, index = self.index, sampl_freq = self.sampling_rate, error = False)
                r.is_clipped = self.is_clipped or (hasattr(other, "is_clipped") and other.is_clipped)
-                r.time_period=[min(self.time_period[0],other.job_date),
+                if self.time_period and other.job_date is not None:
-                               max(self.time_period[1],other.job_date)]
+                    r.time_period=[min(self.time_period[0],other.job_date),
                                   max(self.time_period[1],other.job_date)]
                else:
                    r.time_period=None
                r.job_id = other.job_id
-                r.job_ids = self.job_ids
+                r.job_ids = self.job_ids.copy()
                r.job_ids[other.job_id] = other.get_job_date()
                if self.common_descriptions is not None:
@@ -725,33 +740,29 @@ class Accumulation(Errorable, Drawable, DamarisFFT, Signalpath):
            # Self empty (copy)
            if not self.contains_data():
                if self.uses_statistics() and not other.uses_statistics():
                    raise ValueError("Accumulation: You cant add non-error accumulations to accumulations with error")
                self.lock.acquire()
                tmp_y = []
                tmp_ysquare = []
-                self.lock.acquire()
+                for i in range(other.get_number_of_channels()):
                    tmp_y.append(numpy.array(other.y[i], dtype="float32"))
                    if other.uses_statistics():
                        tmp_ysquare.append(numpy.array(other.y_square[i], dtype="float32"))
                if self.uses_statistics():
                    r = Accumulation(x = numpy.array(other.x, dtype="float32"), y = tmp_y, y_2 = tmp_ysquare, n = other.n, index = other.index, sampl_freq = other.sampling_rate, error = True)
                else:
                    r = Accumulation(x = numpy.array(other.x, dtype="float32"), y = tmp_y, n = other.n, index = other.index, sampl_freq = other.sampling_rate, error = False)
-                for i in range(other.get_number_of_channels()):
+                other._copy_provenance(r)
                    tmp_y.append(other.y[i])
                    tmp_ysquare.append(other.y_square[i])
                r.time_period=other.time_period[:]
                r.job_id = other.job_id
                r.job_ids = other.job_ids
                if other.common_descriptions is not None:
                    r.common_descriptions=other.common_descriptions.copy()
                else:
                    r.common_descriptions=None
                self.lock.release()
                return r
            # Other and self not empty (self + other)
            else:
                self.lock.acquire()
                if self.sampling_rate != other.get_sampling_rate():
                    raise ValueError("Accumulation: You cant add accumulations with different sampling-rates")
                if len(self.y[0]) != len(other):
@@ -764,6 +775,8 @@ class Accumulation(Errorable, Drawable, DamarisFFT, Signalpath):
                if self.uses_statistics() and not other.uses_statistics():
                    raise ValueError("Accumulation: You cant add non-error accumulations to accumulations with error")
                self.lock.acquire()
                tmp_y = []
                tmp_ysquare = []
@@ -777,9 +790,13 @@ class Accumulation(Errorable, Drawable, DamarisFFT, Signalpath):
                else:
                    r = Accumulation(x = numpy.array(self.x, dtype="float32"), y = tmp_y, n = other.n + self.n, index = self.index, sampl_freq = self.sampling_rate, error = False)
                r.is_clipped = self.is_clipped or (hasattr(other, "is_clipped") and other.is_clipped)
-                r.time_period=[min(self.time_period[0],other.time_period[0]),
+                if self.time_period and other.time_period:
-                               max(self.time_period[1],other.time_period[1])]
+                    r.time_period=[min(self.time_period[0],other.time_period[0]),
                                   max(self.time_period[1],other.time_period[1])]
                else:
                    r.time_period=None
                r.job_id = other.job_id
                r.job_ids = self.job_ids.copy()
                for i in other.job_ids:
                    r.job_ids[i] = other.job_ids[i]
                r.common_descriptions={}
@@ -793,22 +810,28 @@ class Accumulation(Errorable, Drawable, DamarisFFT, Signalpath):
                return r
-    def __radd__(self, other):
+        elif other is None:
            # Convenience: ignore add of None
            return self + 0
        else:
            raise ValueError("can not add "+repr(type(other))+" to Accumulation")
    def __radd__(self, other: "int | float | ADC_Result | Accumulation | None") -> "Accumulation":
        """Redefining other + self"""
        return self.__add__(other)
-    def __sub__(self, other):
+    def __sub__(self, other: "int | float | ADC_Result | Accumulation") -> "Accumulation":
        """Redefining self - other"""
        return self.__add__(-other)
-    def __rsub__(self, other):
+    def __rsub__(self, other: "int | float | ADC_Result | Accumulation") -> "Accumulation":
        """Redefining other - self"""
        return (-self) + other
-    def __mul__(self, other):
+    def __mul__(self, other: int | float) -> "Accumulation":
        """Redefining self * other (scalar)"""
        if isinstance(other, (int, float)):
            if not self.contains_data():
@@ -835,11 +858,11 @@ class Accumulation(Errorable, Drawable, DamarisFFT, Signalpath):
        else:
            raise ValueError(f"ValueError: Cannot multiply \"{other.__class__}\" to Accumulation!")
-    def __rmul__(self, other):
+    def __rmul__(self, other: int | float) -> "Accumulation":
        """Redefining other (scalar) * self"""
        return self.__mul__(other)
-    def __imul__(self, other):
+    def __imul__(self, other: int | float) -> "Accumulation":
        """Redefining self *= other (scalar)"""
        if isinstance(other, (int, float)):
            if not self.contains_data():
@@ -854,7 +877,7 @@ class Accumulation(Errorable, Drawable, DamarisFFT, Signalpath):
        else:
            raise ValueError(f"ValueError: Cannot multiply \"{other.__class__}\" to Accumulation!")
-    def __truediv__(self, other):
+    def __truediv__(self, other: int | float) -> "Accumulation":
        """Redefining self / other (scalar)"""
        if isinstance(other, (int, float)):
            if not self.contains_data():
@@ -881,7 +904,7 @@ class Accumulation(Errorable, Drawable, DamarisFFT, Signalpath):
        else:
            raise ValueError(f"ValueError: Cannot divide \"{other.__class__}\" to Accumulation!")
-    def __itruediv__(self, other):
+    def __itruediv__(self, other: int | float) -> "Accumulation":
        """Redefining self /= other (scalar)"""
        if isinstance(other, (int, float)):
            if not self.contains_data():
@@ -896,7 +919,7 @@ class Accumulation(Errorable, Drawable, DamarisFFT, Signalpath):
        else:
            raise ValueError(f"ValueError: Cannot divide \"{other.__class__}\" to Accumulation!")
-    def __floordiv__(self, other):
+    def __floordiv__(self, other: int) -> "Accumulation":
        """Redefining self // other (scalar)"""
        if isinstance(other, float):
            raise ValueError("ValueError: Cannot use floor division (//) on floats! Use \"/\" instead of \"//\"! ")
@@ -905,7 +928,7 @@ class Accumulation(Errorable, Drawable, DamarisFFT, Signalpath):
            if not self.contains_data():
                raise ValueError("Accumulation: You cant divide an empty accumulation")
            self.lock.acquire()
-            tmp_y = []
+            tmp_y: list[numpy.ndarray] = []
            for i in range(self.get_number_of_channels()):
                tmp_y.append(self.y[i] // other)
@@ -921,7 +944,7 @@ class Accumulation(Errorable, Drawable, DamarisFFT, Signalpath):
        else:
            raise ValueError(f"ValueError: Cannot divide \"{other.__class__}\" to Accumulation!")
-    def __ifloordiv__(self, other):
+    def __ifloordiv__(self, other: int) -> "Accumulation":
        """Redefining self //= other (scalar)"""
        if isinstance(other, float):
            raise ValueError("ValueError: Cannot use floor division (//) on floats! Use \"/\" instead of \"//\"! ")
@@ -942,7 +965,7 @@ class Accumulation(Errorable, Drawable, DamarisFFT, Signalpath):
            raise ValueError(f"ValueError: Cannot divide \"{other.__class__}\" to Accumulation!")
-    def __iadd__(self, other):
+    def __iadd__(self, other: "int | float | ADC_Result | Accumulation | None") -> "Accumulation":
        """Redefining self += other"""
        # Float or int
        if isinstance(other, int) or isinstance(other, float):
@@ -982,7 +1005,7 @@ class Accumulation(Errorable, Drawable, DamarisFFT, Signalpath):
                if hasattr(other, "is_clipped"):
                    self.is_clipped = other.is_clipped
-                self.time_period=[other.job_date,other.job_date]
+                self.time_period=[other.job_date,other.job_date] if other.job_date is not None else None
                self.job_id = other.job_id      # added by Oleg Petrov
                self.job_ids[other.job_id] = other.get_job_date()
                self.common_descriptions=other.description.copy()
@@ -992,8 +1015,6 @@ class Accumulation(Errorable, Drawable, DamarisFFT, Signalpath):
            # Other and self not empty (self + other/ADC_Result)
            else:
                self.lock.acquire()
                if self.sampling_rate != other.get_sampling_rate():
                    raise ValueError("Accumulation: You can't add ADC-Results with different sampling-rates")
                if len(self.y[0]) != len(other):
@@ -1004,6 +1025,8 @@ class Accumulation(Errorable, Drawable, DamarisFFT, Signalpath):
                    if self.index[i] != other.get_index_bounds(i):
                        raise ValueError("Accumulation: You can't add ADC-Results with different indexing")
                self.lock.acquire()
                for i in range(self.get_number_of_channels()):
                    self.y[i] += other.y[i]
                    if self.uses_statistics():
@@ -1012,8 +1035,11 @@ class Accumulation(Errorable, Drawable, DamarisFFT, Signalpath):
                self.n += 1
                if hasattr(other, "is_clipped"):
                    self.is_clipped = self.is_clipped or other.is_clipped
-                self.time_period=[min(self.time_period[0],other.job_date),
+                if self.time_period and other.job_date is not None:
-                                  max(self.time_period[1],other.job_date)]
+                    self.time_period=[min(self.time_period[0],other.job_date),
                                      max(self.time_period[1],other.job_date)]
                else:
                    self.time_period=None
                self.job_id = other.job_id
@@ -1053,7 +1079,7 @@ class Accumulation(Errorable, Drawable, DamarisFFT, Signalpath):
                if hasattr(other, "is_clipped"):
                    self.is_clipped = other.is_clipped
                self.common_descriptions=other.common_descriptions.copy()
-                self.time_period=other.time_period[:]
+                self.time_period=other.time_period[:] if other.time_period is not None else None
                self.job_id = other.job_id      # added by Oleg Petrov
                self.job_ids.update(other.job_ids)
                self.lock.release()
@@ -1062,7 +1088,6 @@ class Accumulation(Errorable, Drawable, DamarisFFT, Signalpath):
            # Other and self not empty (self + other)
            else:
                self.lock.acquire()
                if self.sampling_rate != other.get_sampling_rate():
                    raise ValueError("Accumulation: You cant add accumulations with different sampling-rates")
                if len(self.y[0]) != len(other):
@@ -1074,6 +1099,8 @@ class Accumulation(Errorable, Drawable, DamarisFFT, Signalpath):
                        raise ValueError("Accumulation: You cant add accumulations with different indexing")
                if self.uses_statistics() and not other.uses_statistics():
                    raise ValueError("Accumulation: You cant add non-error accumulations to accumulations with error")
                self.lock.acquire()
                for i in range(self.get_number_of_channels()):
                    self.y[i] += other.y[i]
@@ -1083,8 +1110,11 @@ class Accumulation(Errorable, Drawable, DamarisFFT, Signalpath):
                self.n += other.n
                if hasattr(other, "is_clipped"):
                    self.is_clipped = self.is_clipped or other.is_clipped
-                self.time_period=[min(self.time_period[0],other.time_period[0]),
+                if self.time_period and other.time_period:
-                                  max(self.time_period[1],other.time_period[1])]
+                    self.time_period=[min(self.time_period[0],other.time_period[0]),
                                      max(self.time_period[1],other.time_period[1])]
                else:
                    self.time_period=None
                self.job_id = other.job_id
                self.job_ids.update(other.job_ids)
                # Removes mismatched common description keys
@@ -1114,16 +1144,16 @@ class Accumulation(Errorable, Drawable, DamarisFFT, Signalpath):
            raise ValueError("can not add "+repr(type(other))+" to Accumulation")
-    def __isub__(self, other):
+    def __isub__(self, other: "int | float | ADC_Result | Accumulation") -> "Accumulation":
        """Redefining self -= other"""
        return self.__iadd__(-other)
-    def __neg__(self):
+    def __neg__(self) -> "Accumulation":
        """Redefining -self"""
        if not self.contains_data():
-            return
+            raise ValueError("Accumulation: You cant negate an empty accumulation")
        tmp_y = []
@@ -1132,14 +1162,16 @@ class Accumulation(Errorable, Drawable, DamarisFFT, Signalpath):
            tmp_y.append(numpy.array(-self.y[i], dtype="float32"))
        if self.uses_statistics():
-            r = Accumulation(x = numpy.array(self.x, dtype="float32"), y = tmp_y, y_2 = numpy.array(self.y_square), n = self.n, index = self.index, sampl_freq = self.sampling_rate, error = True)
+            tmp_y_square = [numpy.array(sq) for sq in self.y_square]
            r = Accumulation(x = numpy.array(self.x, dtype="float32"), y = tmp_y, y_2 = tmp_y_square, n = self.n, index = self.index, sampl_freq = self.sampling_rate, error = True)
        else:
            r = Accumulation(x = numpy.array(self.x, dtype="float32"), y = tmp_y, n = self.n, index = self.index, sampl_freq = self.sampling_rate, error = False)
        self._copy_provenance(r)
        self.lock.release()
        return r
-def read_from_hdf(hdf_node):
+def read_from_hdf(hdf_node: object) -> "Accumulation | None":
    """
    read accumulation data from HDF node and return it.
    """
@@ -17,8 +17,12 @@ class Config_Result(Resultable):
        if config is None:
            self.config = { }
        else:
            self.config = config
        if desc is None:
            self.description = { }
        else:
            self.description = desc
        self.job_id = job_id
        self.job_date = job_date
@@ -19,10 +19,6 @@ class DamarisFFT:
        :param float stop: end of clipping in s
        """
        # check if start/stop order is properly
        if start > stop:
            start, stop = stop, start
        # do nothing if one uses clip as a "placeholder"
        if start is None and stop is None:
            return self
@@ -32,6 +28,10 @@ class DamarisFFT:
        if stop is None:
            stop = self.x[ -1 ]
        # check if start/stop order is properly
        if start > stop:
            start, stop = stop, start
        # check if data is fft which changes the start/stop units
        if self.xlabel == "Frequency / Hz":
            start = self.x.size * (0.5 + start / self.sampling_rate)
@@ -394,6 +394,12 @@ class DataPool(collections.abc.MutableMapping):
                        if obj is not None:
                            self[full_path] = obj
                    elif damaris_type == "FitResult":
                        from damaris.data.FitResult import read_from_hdf
                        obj = read_from_hdf(node)
                        if obj is not None:
                            self[full_path] = obj
                    elif damaris_type == "TemperatureResult":
                        from damaris.data.Temperature import read_from_hdf
                        obj = read_from_hdf(node)
@@ -1,5 +1,7 @@
 # -*- coding: iso-8859-1 -*-
 from __future__ import annotations
 #############################################################################
 #                                                                           #
 # Name: Class Drawable                                                      #
@@ -8,23 +10,29 @@
 #                                                                           #
 #############################################################################
 import numpy
 class Drawable:
    def __init__(self):
        # Will be set correctly in one of the subclasses
-        self.x = []
+        # x is always a numpy.ndarray, y is always a list of numpy.ndarray
-        self.y = []
+        # (one array per channel); empty data is represented by zero-length
        # arrays of the same types
        self.x: numpy.ndarray = numpy.array([], dtype="float64")
        self.y: list[numpy.ndarray] = []
-        self.styles = { }
+        self.styles: dict = { }
-        self.xlabel = None
+        self.xlabel: str | None = None
-        self.ylabel = None
+        self.ylabel: str | None = None
-        self.title = None
+        self.title: str | None = None
-        self.legend = { }
+        self.legend: dict = { }
-        self.text = {}
+        self.text: dict = {}
        self.xmin = 0
        self.xmax = 0
@@ -32,12 +40,12 @@ class Drawable:
        self.ymax = 0
-    def get_xdata(self):
+    def get_xdata(self) -> numpy.ndarray:
        "Returns a reference to the x-Plotdata (array)"
        return self.x
-    def set_xdata(self, pos, value):
+    def set_xdata(self, pos: int, value: float) -> None:
        "Sets a point in x"
        try:
            self.x[pos] = value
@@ -45,7 +53,7 @@ class Drawable:
            raise
-    def get_ydata(self, channel):
+    def get_ydata(self, channel: int = 0) -> numpy.ndarray:
        "Returns the y-Plotdata of channel n (array)"
        try:
            return self.y[channel]
@@ -53,51 +61,52 @@ class Drawable:
            raise
-    def set_ydata(self, channel, pos, value):
+    def set_ydata(self, channel: int, pos: int, value: float) -> None:
        "Sets a point in y"
        try:
            self.y[channel][pos] = value
        except:
            raise
-    def get_number_of_channels(self):
+
    def get_number_of_channels(self) -> int:
        "Returns the number of channels in y"
        return len(self.y)
-    def get_style(self):
+    def get_style(self) -> dict:
        "Returns a reference to plot-styles (dictionary)"
        return self.styles
-    def set_style(self, channel, value):
+    def set_style(self, channel: int | str, value: object) -> None:
        "Sets a channel to a certain plot-style"
        if channel in self.styles:
            print("Drawable Warning: Style key \"%s\" will be overwritten with \"%s\"" % (str(channel), str(value)))
        self.styles[channel] = str(value)
-    def get_xlabel(self):
+    def get_xlabel(self) -> str | None:
        "Returns the label for the x-axis"
        return self.xlabel
-    def set_xlabel(self, label):
+    def set_xlabel(self, label: object) -> None:
        "Sets the label for the x-axis"
        self.xlabel = str(label)
-    def get_ylabel(self):
+    def get_ylabel(self) -> str | None:
        "Gets the label for the y-axis"
        return self.ylabel
-    def set_ylabel(self, label):
+    def set_ylabel(self, label: object) -> None:
        "Sets the label for the y-axis"
        self.ylabel = str(label)
-    def get_text(self, index):
+    def get_text(self, index: int | str) -> str | None:
        "Returns labels to be plotted (List)"
        if index in self.text:
            return self.text[index]
@@ -105,84 +114,96 @@ class Drawable:
            return None
-    def set_text(self, index, text):
+    def set_text(self, index: int | str, text: object) -> None:
        "Sets labels to be plotted "
        self.text[index] = str(text)
-    def get_title(self):
+    def get_title(self) -> str | None:
        "Returns the title of the plot"
        return self.title
-    def set_title(self, title):
+    def set_title(self, title: object) -> None:
        "Sets the title of the plot"
        self.title = str(title)
-    def get_legend(self):
+    def get_legend(self) -> dict:
        "Returns the legend of the plot (Dictionary)"
        return self.legend
-    def set_legend(self, channel, value):
+    def set_legend(self, channel: int | str, value: object) -> None:
        "Sets the legend of the plot"
        if channel in self.legend:
            print("Drawable Warning: Legend key \"%s\" will be overwritten with \"%s\"" % (str(channel), str(value)))
        self.legend[channel] = str(value)
-    def get_xmin(self):
+
    def get_xmin(self) -> float:
        "Returns minimun of x"
        if self.x.size == 0:
            return 0
        return self.x.min()
-    def get_xminpos(self):
+
    def get_xminpos(self) -> float:
        "Returns smallest positive value of x"
        mask = self.x > 0
        if not numpy.any(mask):
            return 0
        return self.x[mask].min()
-    def set_xmin(self, xmin):
+
    def set_xmin(self, xmin: float) -> None:
        "Sets minimum of x"
        self.xmin = xmin
-    def get_xmax(self):
+
    def get_xmax(self) -> float:
        "Returns maximum of x"
        if self.x.size == 0:
            return 0
        return self.x.max()
-    def set_xmax(self, xmax):
+
    def set_xmax(self, xmax: float) -> None:
        "Sets maximum of x"
        self.xmax = xmax
-    def get_ymin(self):
+
    def get_ymin(self) -> float | int:
        "Returns minimum of y"
-        if isinstance(self.y, list):
+        if len(self.y) == 0:
-            return min([yarr.min() for yarr in self.y])
+            return 0
-        else:
+        return min([yarr.min() for yarr in self.y])
            return self.y.min()
-    def get_yminpos(self):
+
    def get_yminpos(self) -> float | int:
        "Returns smallest positive value of y"
-        if isinstance(self.y, list):
+        ymins = []
-            ymins = []
+        for ys in self.y:
-            for ys in self.y:
+            mask = ys > 0
-                mask = ys > 0
+            if numpy.any(mask):
                ymins.append(ys[mask].min())
-            ymin = min(ymins)
+        if len(ymins) == 0:
-        else:
+            return 0
-            mask = self.y > 0
+        return min(ymins)
            ymin = self.y[mask].min()
        return ymin
-    def set_ymin(self, ymin):
+
    def set_ymin(self, ymin: float) -> None:
        "Sets minimum of y"
        self.ymin = ymin
    def get_ymax(self):
        "Returns maximimum of y"
        if isinstance(self.y, list):
            return max([yarr.max() for yarr in self.y])
        else:
            return self.y.max()
-    def set_ymax(self, ymax):
+    def get_ymax(self) -> float | int:
        "Returns maximimum of y"
        if len(self.y) == 0:
            return 0
        return max([yarr.max() for yarr in self.y])
    def set_ymax(self, ymax: float) -> None:
        "Sets maximum of y"
        self.ymax = ymax
@@ -2,6 +2,7 @@
 from .Resultable import Resultable
 from .Drawable import Drawable
 import numpy
 #############################################################################
 #                                                                           #
@@ -46,12 +47,12 @@ class Error_Result(Resultable, Drawable):
        return False
    # Nothing to plot
-    def get_ydata(self):
+    def get_ydata(self, channel=0):
-        return [0.0]
+        return numpy.array([0.0])
    # Nothing to plot
    def get_xdata(self):
-        return [0.0]
+        return numpy.array([0.0])
    #overload of operators und built-ins -------------------------------------------------------
@@ -0,0 +1,127 @@
 # fit curve with x-values independent of the measurement data points
 import numpy
 import tables
 from . import Drawable
 class FitResult(Drawable.Drawable):
    """
    plottable fit curve belonging to a MeasurementResult
    In contrast to MeasurementResult, the x-values are a plain array
    and are independent of the measured data points, so a fit can be
    sampled on a much denser x-grid for a smooth plot. The fit is
    stored in the data pool under its own key, e.g. as a child of the
    measurement ("Magnetization(tau)/fit"), and is drawn by the GUI
    as an overlay on the measurement it belongs to.
    """
    def __init__(self, x, y, title=None, source=None, y_err=None, params=None):
        """
        x: array-like of x-values (independent of the measurement)
        y: array-like of y-values, same length as x
        title: plot title of the fit
        source: data pool key of the MeasurementResult this fit belongs to
        y_err: optional array-like of y errors, same length as x
        params: optional dictionary of fit parameters, shown in the plot
        """
        Drawable.Drawable.__init__(self)
        self.x = numpy.array(x, dtype="float64").reshape(-1)
        self.y = [numpy.array(y, dtype="float64").reshape(-1)]
        if y_err is not None:
            self.y_err = numpy.array(y_err, dtype="float64").reshape(-1)
        else:
            self.y_err = None
        self.title = title
        self.source = source
        self.params = dict(params) if params is not None else {}
    def get_lineplotdata(self):
        """
        x and y data for plotting the fit curve
        """
        return [self.x, self.y[0]]
    def uses_statistics(self):
        """
        drawable interface method returns False
        """
        return False
    def write_to_hdf(self, hdffile, where, name, title, complib=None, complevel=None):
        h5_table_format = {
            "x": tables.Float64Col(),
            "y": tables.Float64Col()
            }
        if self.y_err is not None:
            h5_table_format["y_err"] = tables.Float64Col()
        filter = None
        if complib is not None:
            if complevel is None:
                complevel = 9
            filter = tables.Filters(complevel=complevel, complib=complib, shuffle=1)
        fit_table = hdffile.create_table(where=where, name=name,
                                         description=h5_table_format,
                                         title=title,
                                         filters=filter,
                                         expectedrows=self.x.shape[0])
        fit_table.flavor = "numpy"
        fit_table.attrs.damaris_type = "FitResult"
        fit_table.attrs.quantity_name = self.get_title()
        if self.xlabel is not None:
            fit_table.attrs.xlabel = self.xlabel
        if self.ylabel is not None:
            fit_table.attrs.ylabel = self.ylabel
        if self.source is not None:
            fit_table.attrs.source = self.source
        for (key, value) in self.params.items():
            if isinstance(value, (int, float)) and not isinstance(value, bool):
                fit_table.attrs.__setattr__("param_" + str(key), float(value))
            else:
                fit_table.attrs.__setattr__("param_" + str(key), str(value))
        row = fit_table.row
        has_y_err = self.y_err is not None
        for i in range(self.x.shape[0]):
            row["x"] = self.x[i]
            row["y"] = self.y[0][i]
            if has_y_err:
                row["y_err"] = self.y_err[i]
            row.append()
        fit_table.flush()
 def read_from_hdf(hdf_node):
    """
    reads a FitResult object from the hdf_node
    or None if the node is not suitable
    """
    if not isinstance(hdf_node, tables.Table):
        return None
    if hdf_node._v_attrs.damaris_type != "FitResult":
        return None
    xdata = hdf_node.col("x")
    ydata = hdf_node.col("y")
    if "y_err" in hdf_node.colnames:
        y_err = hdf_node.col("y_err")
    else:
        y_err = None
    fr = FitResult(xdata, ydata,
                   title=getattr(hdf_node._v_attrs, "quantity_name", None),
                   source=getattr(hdf_node._v_attrs, "source", None),
                   y_err=y_err)
    fr.xlabel = getattr(hdf_node._v_attrs, "xlabel", None)
    fr.ylabel = getattr(hdf_node._v_attrs, "ylabel", None)
    params = {}
    for attr_name in hdf_node._v_attrs._f_list("all"):
        if attr_name.startswith("param_"):
            params[attr_name[6:]] = getattr(hdf_node._v_attrs, attr_name)
    fr.params = params
    return fr
@@ -4,6 +4,7 @@ import sys
 import tables
 import numpy
 import collections
 from typing import IO
 from . import Drawable
 ## provide gaussian statistics for a series of measured data points
@@ -12,7 +13,7 @@ from . import Drawable
 # internally it keeps the sum, the sum of squares and the number of data points
 class AccumulatedValue:
-    def __init__(self, mean=None, mean_err=None, n=None):
+    def __init__(self, mean: float | None = None, mean_err: float | None = None, n: int | None = None):
        """
        one value with std. deviation
        can be initialized by:
@@ -42,7 +43,7 @@ class AccumulatedValue:
            self.y=float(mean)*self.n
            self.y2=float(mean_err)**2*n*(n-1.0)+float(mean)**2*n
-    def __add__(self,y):
+    def __add__(self, y: "AccumulatedValue | float") -> "AccumulatedValue":
        new_one=AccumulatedValue()
        if isinstance(y, AccumulatedValue):
            new_one.y=self.y+y.y
@@ -54,7 +55,7 @@ class AccumulatedValue:
            new_one.n=self.n+1
        return new_one
-    def __iadd__(self,y):
+    def __iadd__(self, y: "AccumulatedValue | float") -> "AccumulatedValue":
        if isinstance(y, AccumulatedValue):
            self.y+=y.y
            self.y2+=y.y2
@@ -65,14 +66,14 @@ class AccumulatedValue:
            self.n+=1
        return self
-    def copy(self):
+    def copy(self) -> "AccumulatedValue":
        a=AccumulatedValue()
        a.y=self.y
        a.y2=self.y2
        a.n=self.n
        return a
-    def mean(self):
+    def mean(self) -> float | None:
        """
        returns the mean of all added/accumulated values
        """
@@ -81,7 +82,7 @@ class AccumulatedValue:
        else:
            return self.y/self.n
-    def sigma(self):
+    def sigma(self) -> float | None:
        """
        returns the standard deviation added/accumulated values
        """
@@ -97,7 +98,7 @@ class AccumulatedValue:
        else:
            return None
-    def mean_error(self):
+    def mean_error(self) -> float | None:
        """
        returns the mean's error (=std.dev/sqrt(n)) of all added/accumulated values
        """
@@ -113,7 +114,7 @@ class AccumulatedValue:
        else:
            return None
-    def __str__(self):
+    def __str__(self) -> str:
        if self.n==0:
            return "no value"
        elif self.n==1:
@@ -121,12 +122,12 @@ class AccumulatedValue:
        else:
            return "%g +/- %g (%d accumulations)"%(self.mean(),self.mean_error(),self.n)
-    def __repr__(self):
+    def __repr__(self) -> str:
        return str(self)
 class MeasurementResult(Drawable.Drawable, collections.UserDict):
-    def __init__(self, quantity_name):
+    def __init__(self, quantity_name: str) -> None:
        """
        convenient accumulation and interface to plot functions
@@ -138,7 +139,7 @@ class MeasurementResult(Drawable.Drawable, collections.UserDict):
        self.lock = threading.RLock()
    # get the selected item, if it does not exist, create an empty one
-    def __getitem__(self, key):
+    def __getitem__(self, key: float) -> "AccumulatedValue":
        if key not in self:
            a=AccumulatedValue()
            self.data[float(key)]=a
@@ -146,23 +147,26 @@ class MeasurementResult(Drawable.Drawable, collections.UserDict):
        else:
            return self.data[float(key)]
-    def __setitem__(self,key,value):
+    def __setitem__(self,key: float,item: "AccumulatedValue | float")-> None:
-        if not isinstance(value, AccumulatedValue):
+        if not isinstance(item, AccumulatedValue):
-            value=AccumulatedValue(float(value))
+            item=AccumulatedValue(float(item))
        return collections.UserDict.__setitem__(self,
                                             float(key),
-                                             value)
+                                             item)
-    def __add__(self, right_value):
+    def __add__(self, right_value: int) -> "MeasurementResult":
        if right_value==0:
-            return self.copy()
+            new_one=MeasurementResult(self.quantity_name)
            for key in self.data:
                new_one[key]=self.data[key].copy()
            return new_one
        else:
            raise Exception("not implemented")
-    def get_title(self):
+    def get_title(self) -> str:
        return self.quantity_name
-    def get_xdata(self):
+    def get_xdata(self) -> numpy.ndarray:
        """
        sorted array of all dictionary entries without Accumulated Value objects with n==0
        """
@@ -171,32 +175,35 @@ class MeasurementResult(Drawable.Drawable, collections.UserDict):
        keys.sort()
        return keys
-    def get_ydata(self):
+    def get_ydata(self, channel: int = 0) -> numpy.ndarray:
        """
        y data (mean values); the channel argument is accepted for
        compatibility with the Drawable interface, MeasurementResult
        is single-channel
        """
        return self.get_xydata()[1]
-    def get_xydata(self):
+    def get_xydata(self) -> list[numpy.ndarray]:
        k=self.get_xdata()
        v=numpy.array([self.data[key].mean() for key in k], dtype="float64")
        return [k,v]
-    def get_errorplotdata(self):
+    def get_errorplotdata(self) -> list[numpy.ndarray]:
        k=self.get_xdata()
        v=numpy.array([self.data[key].mean() for key in k], dtype="float64")
        e=numpy.array([self.data[key].mean_error() for key in k], dtype="float64")
        return [k,v,e]
-    def get_lineplotdata(self):
+    def get_lineplotdata(self) -> list[numpy.ndarray]:
-        k=self.get_xdata()
+        return self.get_xydata()
        v=numpy.array(self.y, dtype="float64") 
        return [k, v]
-    def uses_statistics(self):
+    def uses_statistics(self) -> bool:
        """
        drawable interface method returns True
        """
        return True
-    def write_to_csv(self,destination=sys.stdout, delimiter=" "):
+    def write_to_csv(self,destination: str | IO[str] = sys.stdout, delimiter: str = " ") -> None:
        """
        writes the data to a file or to sys.stdout
        destination can be a file or a filename
@@ -208,24 +215,21 @@ class MeasurementResult(Drawable.Drawable, collections.UserDict):
        else:
            self._write_to_csv_dest(destination, delimiter)
-    def _write_to_csv_dest(self, dest, delimiter):
+    def _write_to_csv_dest(self, dest: IO[str], delimiter: str) -> None:
        dest.write("# quantity:"+str(self.quantity_name)+"\n")
        dest.write("# x y ysigma n\n")
        for x in self.get_xdata():
            y = self.data[x]
-            if isinstance(y, (float, int)):
+            dest.write("%e%s%e%s%e%s%d\n" % (x,
-                dest.write("%e%s%e%s0%s1\n" % (x, delimiter, y, delimiter, delimiter))
+                                             delimiter,
-            else:
+                                             y.mean(),
-                dest.write("%e%s%e%s%e%s%d\n" % (x,
+                                             delimiter,
-                                                 delimiter,
+                                             y.mean_error(),
-                                                 y.mean(),
+                                             delimiter,
-                                                 delimiter,
+                                             y.n))
                                                 y.mean_error(),
                                                 delimiter,
                                                 y.n))
-    def write_to_hdf(self, hdffile, where, name, title, complib=None, complevel=None):
+    def write_to_hdf(self, hdffile: tables.File, where: str, name: str, title: str, complib: str | None = None, complevel: int | None = None) -> None:
        h5_table_format= {
            "x" : tables.Float32Col(),
            "y" : tables.Float32Col(),
@@ -251,24 +255,19 @@ class MeasurementResult(Drawable.Drawable, collections.UserDict):
            row=mr_table.row
            xdata=self.get_xdata()
            if xdata.shape[0]!=0:
-                for x in self.get_xdata():
+                for x in xdata:
                    y=self.data[x]
                    row["x"]=x
-                    if type(y) in [float, int, int]:
+                    row["y"]=y.mean()
-                        row["y"]=y
+                    row["y_err"]=y.mean_error()
-                        row["y_err"]=0.0
+                    row["n"]=y.n
                        row["n"]=1
                    else:
                        row["y"]=y.mean()
                        row["y_err"]=y.mean_error()
                        row["n"]=y.n
                    row.append()
        finally:
            mr_table.flush()
            self.lock.release()
-def read_from_hdf(hdf_node):
+def read_from_hdf(hdf_node: object) -> "MeasurementResult | None":
    """
    reads a MeasurementResult object from the hdf_node
    or None if the node is not suitable
@@ -21,16 +21,16 @@ class Signalpath:
        if abs(reduced_angle[1]) < 1e-6:
            reduced_angle = reduced_angle[0] % 4
            if reduced_angle == 0:
-                rotated.y = list(self.y)
+                rotated.y = [a.copy() for a in self.y]
            elif reduced_angle == 1:
-                rotated.y = [-self.y[1], self.y[0]]
+                rotated.y = [-self.y[1], self.y[0].copy()]
            elif reduced_angle == 2:
                rotated.y = [-self.y[0], -self.y[1]]
            elif reduced_angle == 3:
-                rotated.y = [self.y[1], -self.y[0]]
+                rotated.y = [self.y[1].copy(), -self.y[0]]
        else:
            rad_angle = N.deg2rad(degrees)
            sin_angle = N.sin(rad_angle)
@@ -1,10 +1,11 @@
 from damaris.data.ADC_Result import ADC_Result
 from damaris.data.Accumulation import Accumulation
 from damaris.data.MeasurementResult import MeasurementResult, AccumulatedValue
 from damaris.data.FitResult import FitResult
 from damaris.data.DataPool import DataPool
 from damaris.data.Error_Result import Error_Result
 from damaris.data.Config_Result import Config_Result
 from damaris.data.Temperature import TemperatureResult
-__all__=["ADC_Result", "Accumulation", "MeasurementResult", "AccumulatedValue", "DataPool", "Error_Result", "Config_Result", "TemperatureResult" ]
+__all__=["ADC_Result", "Accumulation", "MeasurementResult", "AccumulatedValue", "FitResult", "DataPool", "Error_Result", "Config_Result", "TemperatureResult" ]
@@ -3,20 +3,20 @@ import types
 import numpy
 class StateBase(object):
-    def __init__(self):
+    def __init__(self) -> None:
        pass
-    def to_xml(self, indent = ""):
+    def to_xml(self, indent: str = "") -> str:
        return indent + "<!-- " + repr(self) + " -->"
 class StateSimple(StateBase):
-    def __init__(self, time, content=None):
+    def __init__(self, time: float, content: object | None = None) -> None:
        super(StateSimple, self).__init__()
        if time < 0:
            raise AssertionError("time for state is negative!")
        self.time = float(time)
        self.content = content
-    def to_xml(self, indent = ""):
+    def to_xml(self, indent: str = "") -> str:
        s = indent + '<state time="%s"' % repr(self.time)
        if self.content is None:
            return s + '/>\n'
@@ -24,14 +24,14 @@ class StateSimple(StateBase):
        s += indent + '  ' + str(self.content) + '\n'
        s += indent + '</state>\n'
        return s
-    def __repr__(self):
+    def __repr__(self) -> str:
        return 'StateSimple(%s, %s)' % (self.time, repr(self.content))
 class StateList(StateBase):
-    def __init__(self):
+    def __init__(self) -> None:
        super(StateList, self).__init__()
-        self.list = []
+        self.list: list[object] = []
-    def to_xml(self, indent = "  "):
+    def to_xml(self, indent: str = "  ") -> str:
        s = ""
        for k in self.list:
            if hasattr(k, "to_xml"):
@@ -39,21 +39,21 @@ class StateList(StateBase):
            else:
                s += indent + str(k)
        return s
-    def append(self, val):
+    def append(self, val: object) -> None:
        self.list.append(val)
 class StateLoop(StateList):
    """Represents a loop in the state tree"""
-    def __init__(self, repeat):
+    def __init__(self, repeat: int) -> None:
        super(StateLoop, self).__init__()
        self.repeat = repeat
-    def to_xml(self, indent = ""):
+    def to_xml(self, indent: str = "") -> str:
        s = indent + ('<sequent repeat="%d">\n' % self.repeat)
        s += super(StateLoop, self).to_xml(indent + "  ")
        s += indent + '</sequent>\n'
        return s
-    def __repr__(self):
+    def __repr__(self) -> str:
        return 'StateLoop(repeat=%d, %s)' \
            % (self.repeat, repr(self.list))
@@ -78,32 +78,32 @@ class Experiment:
    :param list rf_gates: list of rf gates ttl channels  len(rf_gates) == len(rf_sources)
    """
-    job_id = 0
+    job_id: int = 0
-    def __init__(self, gating=None, rf_sources=[], rf_gates=[]):
+    def __init__(self, gating: float | None = None, rf_sources: list[int] = [], rf_gates: list[int] = []) -> None:
-        self.job_id = Experiment.job_id
+        self.job_id: int = Experiment.job_id
        Experiment.job_id += 1
-        self.state_list = StateList()
+        self.state_list: StateList = StateList()
-        self.list_stack = []
+        self.list_stack: list[StateList] = []
-        self.description = { }
+        self.description: dict[str, object] = { }
-        self.gating = gating
+        self.gating: float | None = gating
        assert type(rf_sources) == type(list()), "rf_sources needs to be a list with the channels"
        assert type(rf_gates) == type(list()), "rf_gates needs to be a list with the channels"
        assert len(rf_gates) == len(rf_sources), "rf_sources and rf_gates must have equal number of entries"
-        self.rf_sources = rf_sources
+        self.rf_sources: list[int] = rf_sources
-        self.rf_gates = rf_gates
+        self.rf_gates: list[int] = rf_gates
        #for tracking the experiment length:
        #because loops are possible we need to track the length for each loop level
-        self.total_time=[0.0]
+        self.total_time: list[float] = [0.0]
        #and we need to know the number of iterations of the loops to multiply the state.
-        self.loop_iterations=[1]
+        self.loop_iterations: list[int] = [1]
    # Commands -------------------------------------------------------------------------------------
-    def ttl_pulse(self, length, channel = None, value = None):
+    def ttl_pulse(self, length: float, channel: int | None = None, value: int | None = None) -> None:
        """
        Creates a state with length **length** and switches requested bits of the pulse programmer to HIGH.
@@ -151,7 +151,7 @@ class Experiment:
        self.total_time[-1] += length
    ## Same as ttl_pulse, but no *channel* keyword
-    def ttls(self, length = None, value = None):
+    def ttls(self, length: float | None = None, value: int | None = None) -> None:
        """
        Same as ttl_pulse, but no *channel* keyword
@@ -159,6 +159,7 @@ class Experiment:
        :param int value: lines to set (integer)
        :return:
        """
        assert value is not None, "ttls needs an integer value"
        the_value=int(value)
        s_content = '<ttlout value="0x%06x"/>' % the_value
        if length is not None:
@@ -168,7 +169,7 @@ class Experiment:
            self.state_list.append(s_content)
-    def rf_pulse(self, length=None, phase=0, source=0):
+    def rf_pulse(self, length: float | None = None, phase: float = 0, source: int = 0) -> None:
        """
        Make an rf pulse, including gating and phase switching. Only possible if Experiment is configured.
@@ -183,7 +184,7 @@ class Experiment:
        self.ttls(length=length, value=self.rf_gates[source]+self.rf_sources[source])
    ## Beginning of a new state
-    def state_start(self, time):
+    def state_start(self, time: float) -> None:
        """
        Starts a state in the pulse programs with duration *time*.
        This must be closed with :func:`state_end`.
@@ -194,13 +195,13 @@ class Experiment:
        self.total_time[-1] += time
    ## End of *state_start*
-    def state_end(self):
+    def state_end(self) -> None:
        """
        Closes a previous :func:`state_start`
        """
        self.state_list.append('</state>\n')
-    def wait(self, time, ttls=None, gating=False):
+    def wait(self, time: float, ttls: int | None = None, gating: bool = False) -> None:
        """
        Waits for a specified amount of time without performing any actions.
@@ -241,6 +242,7 @@ class Experiment:
        """
        if gating:
            assert self.gating is not None, "gating time must be set for gating=True"
            time -= self.gating
        if ttls is not None:
            s_content = '<ttlout value="0x%06x"/>' % ttls
@@ -251,7 +253,7 @@ class Experiment:
        self.total_time[-1] += time
-    def record(self, samples, frequency, timelength=None, sensitivity = None, ttls=None, channels = 3, offset = None, impedance = None):
+    def record(self, samples: int, frequency: float, timelength: float | None = None, sensitivity: float | list[float] | None = None, ttls: int | None = None, channels: int = 3, offset: int | list[int] | None = None, impedance: float | list[float] | None = None) -> None:
        """
        Records data with a given number of samples, sampling frequency, and sensitivity.
        This command starts data acquisition from the ADC (Analog-to-Digital Converter).
@@ -365,7 +367,7 @@ class Experiment:
    ## Create a loop on the pulse programmer. Loop contents can not change inside the loop.
    # @params iterations Number of loop iterations
-    def loop_start(self, iterations):
+    def loop_start(self, iterations: int) -> None:
        """
        creates a loop of given number of iterations and has to be closed by loop_end().
        Commands inside the loop can not change, i.e., the parameters are the same for each loop run.
@@ -384,7 +386,7 @@ class Experiment:
        self.loop_iterations.append(iterations)
    ## End loop state
-    def loop_end(self):
+    def loop_end(self) -> None:
        """
        Closes a l:func:`loop_start` statement.
        """
@@ -396,7 +398,7 @@ class Experiment:
        self.total_time[-1] += looptime*loopiterations
-    def set_frequency(self, frequency, phase, ttls=0):
+    def set_frequency(self, frequency: float, phase: float, ttls: int = 0) -> None:
        """
        Sets the frequency and phase of the frequency source and optionally further channels.
        The state length is 2 µs. Stabilisation time depends on RF source.
@@ -412,7 +414,7 @@ class Experiment:
        self.total_time[-1] += 2e-6
-    def set_pfg(self, dac_value=None, length=None, shape=('rec', 0), trigger=4, is_seq=False):
+    def set_pfg(self, dac_value: int | None = None, length: float | None = None, shape: tuple[str, float] = ('rec', 0), trigger: int = 4, is_seq: bool = False) -> None:
        """
        This sets the value for the PFG, it also sets it back to dac_value=0 automatically.
        If you don't wish to do so (i.e. line shapes)  set is_seq=1
@@ -480,7 +482,7 @@ class Experiment:
        else: # don't know what to do
            raise SyntaxError("form is unknown: %s"%form)
-    def set_dac(self, dac_value, dac_id=1, length=None, is_seq=False, ttls=0):
+    def set_dac(self, dac_value: int, dac_id: int = 1, length: float | None = None, is_seq: bool = False, ttls: int = 0) -> None:
        """
        Sets the value for the DAC (Digital-to-Analog Converter) and optionally additional TTL lines.
        This command is used to control analog output signals, such as pulsed field gradients.
@@ -544,7 +546,7 @@ class Experiment:
            self.total_time[-1] += 42*9e-8
-    def set_phase(self, phase, ttls=0):
+    def set_phase(self, phase: float, ttls: int = 0) -> None:
        """
        Sets the phase of the RF source to the specified value.
@@ -590,7 +592,7 @@ class Experiment:
        self.total_time[-1] += 0.5e-6
-    def set_description(self, key, value):
+    def set_description(self, key: str, value: object) -> None:
        """
        Sets a description key-value pair in the experiment description dictionary.
@@ -630,7 +632,7 @@ class Experiment:
            print('Warning: Overwriting existing description "%s" = "%s" with "%s"' % (key, self.description[key], value))
        self.description[key] = value
-    def set_pts_local(self):
+    def set_pts_local(self) -> None:
        """
        Sets the PTS310/PTS500 frequency source to local mode.
        State length is 2 µs.
@@ -654,7 +656,7 @@ class Experiment:
        return self.job_id
-    def write_xml_string(self):
+    def write_xml_string(self) -> str:
        """
        Returns the current program as a string
@@ -707,14 +709,14 @@ class Experiment:
        return xml_string
-    def write_quit_job(self):
+    def write_quit_job(self) -> str:
        """
        Returns a xml quit-job
        :returns: XML quit-job
        """
        return '<?xml version="1.0" encoding="ISO-8859-1"?>\n<quit/>'
-    def get_length(self):
+    def get_length(self) -> float:
        timelength = 0.0
        #calculate the correct timelength also for unclosed loops, if there is no unclosed loop
        #the timelength of this experiment is self.total_time[-1].
@@ -724,13 +726,13 @@ class Experiment:
        return timelength
 class Quit(Experiment):
-    def write_xml_string(self):
+    def write_xml_string(self) -> str:
        return '<?xml version="1.0" encoding="ISO-8859-1"?>\n<quit no="%d"/>'%self.job_id
 # /Public Methods ------------------------------------------------------------------------------
-def self_test():
+def self_test() -> None:
    e = Experiment()
    e.set_description("key", "value")
    e.set_frequency(85e6, 90, ttls=16)
@@ -2,7 +2,7 @@
 """
 This module holds everything connected with the DAC and PFG
 """
-def conv(I_out=0):
+def conv(I_out: float = 0) -> int:
    """
    converts the demanded Output current in Integer
    """
@@ -120,7 +120,7 @@ class BackendDriver(threading.Thread):
        self.statefilename=None
        state_files=glob.glob(os.path.join(self.spool_dir,"*.state"))
        while len(state_files)==0:
-            if timeout<0 or self.core_input is None or self.core_input.poll() is not None or self.quit_flag.isSet():
+            if timeout<0 or self.core_input is None or self.core_input.poll() is not None or self.quit_flag.is_set():
                # look into core log file and include contents
                logger.error("Backend failed to start: timeout=%s poll=%s", timeout, self.core_input.poll())
                log_message=''
@@ -156,10 +156,10 @@ class BackendDriver(threading.Thread):
                break
        # wait on flag and look after backend
-        while not self.quit_flag.isSet() and self.is_busy():
+        while not self.quit_flag.is_set() and self.is_busy():
            self.quit_flag.wait(0.1)
-        if self.quit_flag.isSet():
+        if self.quit_flag.is_set():
            self.stop_queue()
            while self.is_busy():
                time.sleep(0.1)
@@ -5,6 +5,7 @@ import sys
 import time
 import logging
 import ast
 import contextlib
 from damaris.experiments.Experiment import Quit
 from damaris.experiments import Experiment
@@ -36,6 +37,19 @@ class _SandboxStdout:
        return False
@contextlib.contextmanager
 def _sandbox_stdout_redirect(log_callback):
    """Temporarily redirect process-global stdout/stderr to the sandbox log."""
    old_stdout, old_stderr = sys.stdout, sys.stderr
    sandbox = _SandboxStdout(log_callback)
    try:
        sys.stdout = sandbox
        sys.stderr = sandbox
        yield sandbox
    finally:
        sys.stdout, sys.stderr = old_stdout, old_stderr
 class ExperimentHandling(threading.Thread):
    """
    runs the experiment script in sandbox
@@ -52,17 +66,25 @@ class ExperimentHandling(threading.Thread):
            self.data["__recentexperiment"]=-1
    def synchronize(self, before=0, waitsteps=0.1):
-        while (self.data["__recentexperiment"]>self.data["__recentresult"]+before) and not self.quit_flag.isSet():
+        while (self.data["__recentexperiment"]>self.data["__recentresult"]+before) and not self.quit_flag.is_set():
            self.quit_flag.wait(waitsteps)
-        if self.quit_flag.isSet():
+        if self.quit_flag.is_set():
            raise StopExperiment
    def sleep(self, seconds):
        self.quit_flag.wait(seconds)
-        if self.quit_flag.isSet():
+        if self.quit_flag.is_set():
            raise StopExperiment
    def run(self):
        # Redirect stdout/stderr so print() in sandboxed scripts goes to the GUI
        if self._log_callback is not None:
            with _sandbox_stdout_redirect(self._log_callback):
                self._run_script()
        else:
            self._run_script()
    def _run_script(self):
        dataspace={}
        exp_classes = __import__('damaris.experiments', dataspace, dataspace, ['Experiment'])
        for name in dir(exp_classes):
@@ -77,13 +99,6 @@ class ExperimentHandling(threading.Thread):
        self.location = None
        exp_iterator=None
        # Redirect stdout/stderr so print() in sandboxed scripts goes to the GUI
        _orig_stdout = sys.stdout
        _orig_stderr = sys.stderr
        if self._log_callback is not None:
            sys.stdout = _SandboxStdout(self._log_callback)
            sys.stderr = _SandboxStdout(self._log_callback)
        # check for time.sleep()
        try:
            tree = ast.parse(self.script)
@@ -131,7 +146,7 @@ class ExperimentHandling(threading.Thread):
                traceback_file=None
                return
-        while exp_iterator is not None and not self.quit_flag.isSet():
+        while exp_iterator is not None and not self.quit_flag.is_set():
            # get next experiment from script 
            try:
                job=next(exp_iterator)
@@ -171,7 +186,7 @@ class ExperimentHandling(threading.Thread):
                    # relax for a short time
                    if "__resultsinadvance" in self.data and self.data["__resultsinadvance"]+100<job.job_id:
                        self.quit_flag.wait(0.05)
-                if self.quit_flag.isSet():
+                if self.quit_flag.is_set():
                    dataspace=None
                    exp_iterator=None
                    break
@@ -181,7 +196,3 @@ class ExperimentHandling(threading.Thread):
        dataspace=None
        self.exp_iterator=None
        self.writer=None
        # Restore stdout/stderr
        sys.stdout = _orig_stdout
        sys.stderr = _orig_stderr
@@ -7,7 +7,7 @@ import traceback
 import logging
 import ast
 from damaris.data import Resultable
-from damaris.gui.ExperimentHandling import StopExperiment, _SandboxStdout
+from damaris.gui.ExperimentHandling import StopExperiment, _sandbox_stdout_redirect
 logger = logging.getLogger("damaris.result_handling")
@@ -28,12 +28,13 @@ class ResultHandling(threading.Thread):
    def run(self):
        # Redirect stdout/stderr so print() in sandboxed scripts goes to the GUI
        _orig_stdout = sys.stdout
        _orig_stderr = sys.stderr
        if self._log_callback is not None:
-            sys.stdout = _SandboxStdout(self._log_callback)
+            with _sandbox_stdout_redirect(self._log_callback):
-            sys.stderr = _SandboxStdout(self._log_callback)
+                self._run_script()
        else:
            self._run_script()
    def _run_script(self):
        # execute it
        dataspace={}
        data_classes = __import__('damaris.data', dataspace, dataspace, ['*'])
@@ -96,30 +97,26 @@ class ResultHandling(threading.Thread):
            traceback_file=None
            dataspace=None
        # Restore stdout/stderr
        sys.stdout = _orig_stdout
        sys.stderr = _orig_stderr
    def sleep(self, seconds):
        self.quit_flag.wait(seconds)
-        if self.quit_flag.isSet():
+        if self.quit_flag.is_set():
            raise StopExperiment
    def __iter__(self):
-        if self.quit_flag.isSet():
+        if self.quit_flag.is_set():
            self.results=None
            return
        for i in self.results:
            if hasattr(self.results, "in_advance"):
                self.data_space["__resultsinadvance"]=self.results.in_advance
-            if self.quit_flag.isSet():
+            if self.quit_flag.is_set():
                self.results=None
                return
            if isinstance(i, Resultable.Resultable):
                if self.data_space is not None:
                    self.data_space["__recentresult"]=i.job_id+0
            yield i
-            if self.quit_flag.isSet():
+            if self.quit_flag.is_set():
                self.results=None
                return
@@ -15,7 +15,7 @@ import base64
 import numpy
 try:
-    import xml.etree.cElementTree
+    import xml.etree.ElementTree
    ELEMENT_TREE = True
 except:
    import xml.parsers.expat
@@ -109,7 +109,7 @@ class ResultReader:
        self.result_job_number = None
        # Job Date is set in __read_file()
        self.__filetype = None
-        for elem in xml.etree.cElementTree.ElementTree(file=in_file).iter():
+        for elem in xml.etree.ElementTree.ElementTree(file=in_file).iter():
            if elem.tag == 'result':
                self.result_job_number = int(elem.get("job"))
                pass
@@ -544,7 +544,7 @@ class BlockingResultReader(ResultReader):
        block until result is available
        """
        expected_filename=os.path.join(self.spool_dir,self.result_pattern%(self.no))
-        while (not self.quit_flag.isSet()) and (self.stop_no is None or self.stop_no>self.no):
+        while (not self.quit_flag.is_set()) and (self.stop_no is None or self.stop_no>self.no):
            if not os.access(expected_filename,os.R_OK):
                # stop polling, if required
                if self.poll_time<0: break
@@ -560,11 +560,11 @@ class BlockingResultReader(ResultReader):
                self.in_advance+=1
                in_advance_filename=os.path.join(self.spool_dir,self.result_pattern%(self.in_advance+1))
-            if self.quit_flag.isSet(): break
+            if self.quit_flag.is_set(): break
            r=self.get_result_object(expected_filename)
-            if self.quit_flag.isSet(): break
+            if self.quit_flag.is_set(): break
-            if self.quit_flag.isSet(): break
+            if self.quit_flag.is_set(): break
            yield r
            if self.clear_results:
@@ -13,25 +13,6 @@ import datetime
 from damaris.data import TemperatureResult
 from damaris.tools.temperature import TemperatureController
 # GTK imports are done lazily to avoid initialization issues
 _HAS_GTK = None
 _gdk = None
 def _get_gdk():
    """Lazily import gdk to avoid GTK initialization issues."""
    global _HAS_GTK, _gdk
    if _HAS_GTK is None:
        try:
            import gi
            gi.require_version('Gdk', '3.0')
            from gi.repository import Gdk as gdk
            _gdk = gdk
            _HAS_GTK = True
        except (ImportError, ValueError):
            _HAS_GTK = False
    return _gdk if _HAS_GTK else None
 class TemperatureMonitor(threading.Thread):
    """
@@ -72,6 +53,10 @@ class TemperatureMonitor(threading.Thread):
        self.result = TemperatureResult()
        self._running = False
        self._lock = threading.RLock()
        self._consecutive_failures = 0
        self._max_consecutive_failures = 10
        self._last_error = None
        self._connection_ok = True
        # Initialize the result with metadata
        self.result.xlabel = "Time (s)"
@@ -124,21 +109,29 @@ class TemperatureMonitor(threading.Thread):
                        data_pool_result.job_id = self.result.job_id if hasattr(self.result, 'job_id') else None
                        data_pool_result.job_date = self.result.job_date if hasattr(self.result, 'job_date') else None
-                    # Store in data_pool in GTK thread (if GTK available)
+                    # Store in data_pool (dict item assignment is atomic under the GIL)
-                    gdk = _get_gdk()
+                    self.data_pool[self.data_key] = data_pool_result
-                    if gdk is not None:
+
-                        gdk.threads_enter()
+                # Reset consecutive failure counter on successful read
-                        try:
+                self._consecutive_failures = 0
-                            self.data_pool[self.data_key] = data_pool_result
+                self._last_error = None
-                        finally:
+                self._connection_ok = True
                            gdk.threads_leave()
                    else:
                        self.data_pool[self.data_key] = data_pool_result
            except Exception as e:
-                print(f"TemperatureMonitor error: {e}")
+                self._consecutive_failures += 1
-                import traceback
+                self._last_error = str(e)
-                traceback.print_exc()
+                if self._consecutive_failures <= 3:
                    print(f"TemperatureMonitor read error (attempt {self._consecutive_failures}): {e}")
                elif self._consecutive_failures == 5:
                    print(f"TemperatureMonitor: repeated read errors, checking connection...")
                    if hasattr(self.controller, 'check_connection'):
                        self._connection_ok = self.controller.check_connection()
                    if not self._connection_ok:
                        print(f"TemperatureMonitor: WARNING - controller appears disconnected after {self._consecutive_failures} failures")
                elif self._consecutive_failures >= self._max_consecutive_failures:
                    print(f"TemperatureMonitor: ERROR - {self._consecutive_failures} consecutive failures, controller may be disconnected")
                else:
                    print(f"TemperatureMonitor error (failure #{self._consecutive_failures}): {e}")
            # Sleep in small increments for responsive shutdown
            sleep_remaining = self.interval
@@ -1,5 +1,6 @@
 import serial
 import re
 import time
 import operator
 from functools import reduce
@@ -57,21 +58,22 @@ class Eurotherm(TemperatureController):
 	def send_read_param(self, param):
 		self.s.write(EOT + self.device + param + ENQ)
-	def read_param(self, param):
+	def read_param(self, param, retries=3, retry_delay=0.05):
-		self.s.flushInput()
+		for attempt in range(retries):
-		self.send_read_param(param)
+			self.s.flushInput()
-		answer = self.s.read(self._expect_len)
+			self.send_read_param(param)
-		m = reply_pattern.search(answer)
+			answer = self.s.read(self._expect_len)
 		if m is None:
 			# Reading _expect_len bytes was not enough...
 			answer += self.s.read(200)
 			m = reply_pattern.search(answer)
-		if m is not None:
+			if m is None:
-			self._expect_len = len(answer)
+				answer += self.s.read(200)
-			return m.group(1)
+				m = reply_pattern.search(answer)
-		else:
+			if m is not None:
-			print("received:", repr(answer))
+				self._expect_len = len(answer)
-			return None
+				return m.group(1)
 			if attempt < retries - 1:
 				time.sleep(retry_delay)
 		print("received:", repr(answer))
 		return None
 	def write_param(self, mnemonic, data):
 		if len(mnemonic) > 2:
@@ -128,6 +130,14 @@ class Eurotherm(TemperatureController):
 		"""Set target temperature in Celsius."""
 		return self.write_param('SL', str(temperature))
 	def check_connection(self) -> bool:
 		"""Check if the Eurotherm device is connected and responsive."""
 		try:
 			result = self.read_param('PV')
 			return result is not None
 		except Exception:
 			return False
 	def close(self):
 		"""Close the serial connection."""
 		if hasattr(self, 's') and self.s is not None:
@@ -1,5 +1,6 @@
 import serial
 import re
 import time
 import numpy as np
 from .temperature import TemperatureController, register_controller
@@ -91,13 +92,17 @@ class Lakeshore(TemperatureController):
        else:
            return 0.0
-    def read_param(self, param):
+    def read_param(self, param, retries=3, retry_delay=0.05):
        """Read a parameter using simple ASCII commands."""
-        self.s.write(f"{param}?\n")
+        for attempt in range(retries):
-        answer = self.s.readline().strip()
+            self.s.flushInput()
-        if answer and len(answer) > 1:
+            self.s.write(f"{param}?\n")
-            # Remove the first character (command echo) and return the value
+            answer = self.s.readline().strip()
-            return answer[1:]
+            if answer and len(answer) > 1:
                # Remove the first character (command echo) and return the value
                return answer[1:]
            if attempt < retries - 1:
                time.sleep(retry_delay)
        return None
    def get_value(self, name):
@@ -134,9 +139,17 @@ class Lakeshore(TemperatureController):
    def set_setpoint(self, temperature: float) -> bool:
        """Set target temperature in Celsius."""
-        self.s.write(f"SETP {temperature}\n")
+        self.s.write(f"SETP 1,{temperature}\n")
        return True
    def check_connection(self) -> bool:
        """Check if the Lakeshore device is connected and responsive."""
        try:
            result = self.read_param('KRDG')
            return result is not None
        except Exception:
            return False
    def close(self):
        """Close the serial connection."""
        if hasattr(self, 's') and self.s is not None:
@@ -149,3 +149,13 @@ class TemperatureController(ABC):
        if they have resources to clean up.
        """
        pass
    def check_connection(self) -> bool:
        """
        Check if the controller is connected and responsive.
        Returns:
            bool: True if the controller is connected and responsive,
                  False otherwise. Subclasses should override this method.
        """
        return False
@@ -11,6 +11,7 @@ def test(i):
    return e
 def experiment():
-    for i in range(1400):
+    for i in range(100):
-        sleep(0.1)
+        #sleep(0.1)
-        yield test(i)
+        yield test(i)
        synchronize()
@@ -1,6 +1,6 @@
 import tables
 import numpy
-
+# from damaris import FitResult
 r = MeasurementResult("test")
 def result():
@@ -9,14 +9,29 @@ def result():
    except:
        print("h5 already opened")
    accu = Accumulation(error=False)
    for num,ts in enumerate(results):
        data["accu"] = accu
        data["data/ts %i"%num] = ts+0
        ts.write_to_hdf(h5, "/", f"adc_{num}", f"adc_{num}")
        data["fft"] = (ts+0).fft()
        r[num] = ts.y[0][0]
        if num > 4:
            x = r.get_xdata()
            y = r.get_ydata()
            coeffs = numpy.polyfit(x,  y, 2)
            x_line = numpy.linspace(x.min(), x.max(), 100)
            y_line = numpy.polyval(coeffs, x_line)
            fit = FitResult(x=x_line,
                    y=y_line,
                    title="Magnetization(tau) fit",
                    source="test",
                    params={"a": coeffs[0], "b": coeffs[1], "c": coeffs[2]})
            data["test/fit"] = fit
        data["test"] = r
        accu+=ts
        print(accu)
    accu.write_to_hdf(h5, "/", "name", "title")
    try:
        h5.close()
@@ -195,14 +195,14 @@ class TestADCResult(unittest.TestCase):
            np.testing.assert_array_equal(adc.y[i]+10, y[i] + 10, strict=True)
        adc += 10
        for i in range(adc.get_nChannels()):
-            np.testing.assert_array_equal(adc.y[i], y[i] + 10, strict=True)
+            np.testing.assert_array_equal(adc.y[i], (y[i] + 10).astype("float32"), strict=True)
        # test float addition
        for i in range(adc.get_nChannels()):
-            np.testing.assert_array_equal(adc.y[i] + 10., y[i] + 10., strict=True)
+            np.testing.assert_array_equal(adc.y[i] + 10., (y[i] + 10 + 10.).astype("float32"), strict=True)
        adc += 10.
        for i in range(adc.get_nChannels()):
-            np.testing.assert_array_equal(adc.y[i], y[i] + 10 + 10., strict=True)
+            np.testing.assert_array_equal(adc.y[i], (y[i] + 10 + 10.).astype("float32"), strict=True)
    def test_operator_sub_scalar(self):
        """
@@ -215,14 +215,14 @@ class TestADCResult(unittest.TestCase):
            np.testing.assert_array_equal(adc.y[i] - 10, y[i] - 10, strict=True)
        adc -= 10
        for i in range(adc.get_nChannels()):
-            np.testing.assert_array_equal(adc.y[i], y[i] - 10, strict=True)
+            np.testing.assert_array_equal(adc.y[i], (y[i] - 10).astype("float32"), strict=True)
        # test float subtraction
        for i in range(adc.get_nChannels()):
-            np.testing.assert_array_equal(adc.y[i] - 10., y[i] - 10., strict=True)
+            np.testing.assert_array_equal(adc.y[i] - 10., (y[i] - 10 - 10.).astype("float32"), strict=True)
        adc -= 10.
        for i in range(adc.get_nChannels()):
-            np.testing.assert_array_equal(adc.y[i], y[i] - 10 - 10., strict=True)
+            np.testing.assert_array_equal(adc.y[i], (y[i] - 10 - 10.).astype("float32"), strict=True)
    def test_operator_mul_scalar(self):
        """
@@ -236,14 +236,14 @@ class TestADCResult(unittest.TestCase):
            np.testing.assert_array_equal(adc.y[i] * 10, y[i] * 10, strict=True)
        adc *= 10
        for i in range(adc.get_nChannels()):
-            np.testing.assert_array_equal(adc.y[i], y[i] * 10, strict=True)
+            np.testing.assert_array_equal(adc.y[i], (y[i] * 10).astype("float32"), strict=True)
        # test float multiplication
        for i in range(adc.get_nChannels()):
-            np.testing.assert_array_equal(adc.y[i] * 10.0, y[i] * 10.0, strict=True)
+            np.testing.assert_array_equal(adc.y[i] * 10.0, (y[i] * 10 * 10.0).astype("float32"), strict=True)
        adc *= 10.0
        for i in range(adc.get_nChannels()):
-            np.testing.assert_array_equal(adc.y[i], y[i] * 10 * 10.0, strict=True)
+            np.testing.assert_array_equal(adc.y[i], (y[i] * 10 * 10.0).astype("float32"), strict=True)
    def test_operator_truediv_scalar(self):
        """
@@ -255,7 +255,7 @@ class TestADCResult(unittest.TestCase):
            np.testing.assert_array_equal(adc.y[i]/10, y[i] / 10, strict=True)
        adc /= 10
        for i in range(adc.get_nChannels()):
-            np.testing.assert_array_equal(adc.y[i], y[i] / 10, strict=True)
+            np.testing.assert_array_equal(adc.y[i], (y[i] / 10).astype("float32"), strict=True)
    def test_operator_floordiv_scalar(self):
        """
@@ -267,10 +267,37 @@ class TestADCResult(unittest.TestCase):
            np.testing.assert_array_equal(adc.y[i]//10, y[i] // 10, strict=True)
        adc //= 10
        for i in range(adc.get_nChannels()):
-            np.testing.assert_array_equal(adc.y[i], y[i] // 10, strict=True)
+            np.testing.assert_array_equal(adc.y[i], (y[i] // 10).astype("float32"), strict=True)
        self.assertRaises(ValueError, adc.__floordiv__, 1.0)
        self.assertRaises(ValueError, adc.__rfloordiv__, 1.0)
    def test_operators_keep_channel_metadata(self):
        """operator results keep nChannels/is_clipped identical to the operand"""
        adc = self.create_adc_result()
        adc.is_clipped = True
        results = [adc + 1, adc - 1, adc * 2, adc ** 2, adc / 2., adc // 2,
                   10 + adc, 10 - adc, 2 * adc, 100. / adc, 100 // adc, -adc]
        for r in results:
            self.assertEqual(r.get_nChannels(), adc.get_nChannels())
            self.assertEqual(r.is_clipped, adc.is_clipped)
    def test_hdf_roundtrip_keeps_nchannels(self):
        """read_from_hdf must restore the number of channels"""
        import tempfile
        import tables
        from damaris.data.ADC_Result import read_from_hdf
        adc = self.create_adc_result()
        with tempfile.TemporaryDirectory() as tmpdir:
            path = os.path.join(tmpdir, "adc.h5")
            with tables.open_file(path, "w") as h5:
                adc.write_to_hdf(h5, h5.root, "adc", "test")
            with tables.open_file(path, "r") as h5:
                adc2 = read_from_hdf(h5.root.adc)
        self.assertIsNotNone(adc2)
        self.assertTrue(adc2.contains_data())
        self.assertEqual(adc2.get_nChannels(), adc.get_nChannels())
    def test_operator_overload_adc_result_exception(self):
        """
        Test the ValueError raised when ADC_Result is used as an operand in an arithmetic operation
@@ -289,5 +316,31 @@ class TestADCResult(unittest.TestCase):
        self.assertRaises(ValueError, adc1.__rfloordiv__, adc2)
        self.assertRaises(ValueError, adc1.__pow__, adc2)
    def test_empty_state_types(self):
        """Empty ADC_Result must hold an ndarray x and a list-of-ndarray y."""
        adc = ADC_Result()
        self.assertIsInstance(adc.x, np.ndarray)
        self.assertIsInstance(adc.y, list)
        self.assertEqual(adc.x.size, 0)
        self.assertEqual(adc.get_xmin(), 0)
        self.assertEqual(adc.get_xmax(), 0)
        self.assertEqual(adc.get_xminpos(), 0)
        self.assertEqual(adc.get_ymin(), 0)
        self.assertEqual(adc.get_ymax(), 0)
        self.assertEqual(adc.get_yminpos(), 0)
    def test_constructor_coerces_lists(self):
        """Plain lists passed to the constructor must become numpy arrays."""
        x = [0.0, 1.0, 2.0]
        y = [[10, 20, 30], [15, 25, 35]]
        index = [(0, 2)]
        adc = ADC_Result(x, y, index, 1000.0, {"key": "value"}, 1, datetime(2023, 1, 1))
        self.assertIsInstance(adc.x, np.ndarray)
        np.testing.assert_array_equal(adc.x, [0.0, 1.0, 2.0])
        for ch in adc.y:
            self.assertIsInstance(ch, np.ndarray)
        np.testing.assert_array_equal(adc.y[0], [10, 20, 30])
        np.testing.assert_array_equal(adc.y[1], [15, 25, 35])
 if __name__ == "__main__":
    unittest.main()
@@ -1,5 +1,6 @@
 import os
 import subprocess
 import threading
 import unittest
 from datetime import datetime
@@ -258,7 +259,7 @@ class TestAccumulation(unittest.TestCase):
            np.testing.assert_array_equal(accu.y[i], y[i] - 10)
        # test float subtraction
-        adc -= 10.
+        accu -= 10.
        for i in range(adc.get_nChannels()):
            np.testing.assert_array_equal(accu.y[i], y[i] - 10 - 10.)
@@ -312,5 +313,252 @@ class TestAccumulation(unittest.TestCase):
        self.assertRaises(ValueError, accu.__floordiv__, 1.0)
        self.assertRaises(ValueError, accu.__ifloordiv__, 1.0)
    def test_add_invalid_operand_raises(self):
        """accu + bogus must raise ValueError instead of returning None."""
        adc = self.create_adc_result()
        accu = Accumulation()
        accu += adc
        self.assertRaises(ValueError, accu.__add__, "foo")
        self.assertRaises(ValueError, accu.__iadd__, "foo")
    def test_neg_empty_raises(self):
        """-empty accumulation must raise ValueError."""
        self.assertRaises(ValueError, Accumulation().__neg__)
    def test_add_adc_result_does_not_modify_job_ids(self):
        """accu + adc must not insert the adc job id into accu.job_ids."""
        accu = Accumulation()
        accu += self.create_adc_result()
        n_before = len(accu.job_ids)
        adc2 = self.create_adc_result()
        adc2.job_id = 12
        r = accu + adc2
        self.assertIn(12, r.job_ids)
        self.assertNotIn(12, accu.job_ids)
        self.assertEqual(len(accu.job_ids), n_before)
    def test_empty_plus_accumulation_copies_data(self):
        """empty_accu + accu must copy arrays and metadata, not alias them."""
        adc = self.create_adc_result()
        accu = Accumulation()
        accu += adc
        accu.is_clipped = True
        r = Accumulation() + accu
        self.assertIsNot(r.y[0], accu.y[0])
        self.assertIsNot(r.job_ids, accu.job_ids)
        self.assertTrue(r.is_clipped)
        # in-place operation on the result must leave the operand unchanged
        r *= 2
        np.testing.assert_array_equal(accu.y[0], np.array([10, 20, 30], dtype="float32"))
    def test_accumulation_plus_accumulation_keeps_both_job_ids(self):
        """accu1 + accu2 must keep the provenance of both operands."""
        adc1 = self.create_adc_result()
        adc2 = self.create_adc_result()
        adc2.job_id = 12
        accu1 = Accumulation()
        accu1 += adc1
        accu2 = Accumulation()
        accu2 += adc2
        r = accu1 + accu2
        self.assertEqual(set(r.job_ids.keys()), {11, 12})
        self.assertEqual(set(accu1.job_ids.keys()), {11})
        self.assertEqual(set(accu2.job_ids.keys()), {12})
    def test_empty_error_plus_non_error_raises(self):
        """error accumulation + non-error accumulation must raise ValueError."""
        accu = Accumulation()
        accu += self.create_adc_result()
        empty_err = Accumulation(error=True)
        self.assertRaises(ValueError, empty_err.__add__, accu)
        free = []
        def check_lock():
            if empty_err.lock.acquire(timeout=1):
                free.append(True)
                empty_err.lock.release()
        t = threading.Thread(target=check_lock)
        t.start()
        t.join(3)
        self.assertTrue(free, "lock leaked after ValueError in __add__")
    def test_neg_keeps_y_square_as_list(self):
        """-accu must store y_square as a list of per-channel arrays."""
        x = np.array([0.0, 1.0, 2.0])
        y = [np.array([10, 20, 30], dtype="float32")]
        y_square = [np.array([100.0, 400.0, 900.0], dtype="float32")]
        accu = Accumulation(x=x, y=y, y_2=y_square, n=2, index=[(0, 2)], sampl_freq=1000.0, error=True)
        r = -accu
        self.assertIsInstance(r.y_square, list)
        # sums of squares are invariant under negation
        np.testing.assert_array_equal(r.get_ysquare(0), y_square[0])
    def test_iadd_adc_after_ndarray_y_2(self):
        """empty accu with ndarray y_square += adc must not crash (was AttributeError)."""
        y_square_2d = np.array([[100.0, 400.0, 900.0]], dtype="float32")
        accu = Accumulation(y_2=y_square_2d, error=True)
        accu += self.create_adc_result()
        self.assertIsInstance(accu.y_square, list)
        np.testing.assert_array_equal(accu.get_ydata(0), np.array([10, 20, 30], dtype="float32"))
        np.testing.assert_array_equal(accu.get_ysquare(0), np.array([10, 20, 30], dtype="float32") ** 2)
    def test_iadd_accumulation_after_ndarray_y_2(self):
        """empty accu with ndarray y_square += accu must not crash (was AttributeError)."""
        full = Accumulation(error=True)
        full += self.create_adc_result()
        y_square_2d = np.array([[100.0, 400.0, 900.0]], dtype="float32")
        accu = Accumulation(y_2=y_square_2d, error=True)
        accu += full
        self.assertIsInstance(accu.y_square, list)
        np.testing.assert_array_equal(accu.get_ydata(0), np.array([10, 20, 30], dtype="float32"))
        np.testing.assert_array_equal(accu.get_ysquare(0), np.array([10, 20, 30], dtype="float32") ** 2)
    def test_constructor_normalizes_ndarray_y_2(self):
        """an ndarray passed as y_2 must be stored as a list of channel arrays."""
        x = np.array([0.0, 1.0, 2.0])
        y = [np.array([10, 20, 30], dtype="float32")]
        y_square_2d = np.array([[100.0, 400.0, 900.0]], dtype="float32")
        accu = Accumulation(x=x, y=y, y_2=y_square_2d, n=2, index=[(0, 2)], sampl_freq=1000.0, error=True)
        self.assertIsInstance(accu.y_square, list)
        np.testing.assert_array_equal(accu.get_ysquare(0), y_square_2d[0])
    def test_add_accumulations_without_time_period(self):
        """accu + accu without time information must not crash."""
        accu1 = Accumulation()
        accu1 += self.create_adc_result()
        accu2 = Accumulation()
        accu2 += self.create_adc_result()
        accu1.time_period = None
        accu2.time_period = []
        r = accu1 + accu2
        self.assertIsNone(r.time_period)
    def test_iadd_accumulation_without_time_period(self):
        """accu += accu without time information must not crash (was IndexError)."""
        accu1 = Accumulation()
        accu1 += self.create_adc_result()
        accu2 = Accumulation()
        accu2 += self.create_adc_result()
        accu1.time_period = []
        accu2.time_period = []
        accu1 += accu2
        self.assertIsNone(accu1.time_period)
    def test_add_adc_without_time_period(self):
        """accu + adc without time information must not crash."""
        accu = Accumulation()
        accu += self.create_adc_result()
        accu.time_period = []
        r = accu + self.create_adc_result()
        self.assertIsNone(r.time_period)
    def test_time_period_merged_on_add(self):
        """accu + accu with both time periods set merges to min/max."""
        accu1 = Accumulation()
        accu1 += self.create_adc_result()
        accu2 = Accumulation()
        accu2 += self.create_adc_result()
        accu1.time_period = [datetime(2023, 1, 3), datetime(2023, 1, 5)]
        accu2.time_period = [datetime(2023, 1, 2), datetime(2023, 1, 7)]
        r = accu1 + accu2
        self.assertEqual(r.time_period, [datetime(2023, 1, 2), datetime(2023, 1, 7)])
    def test_time_period_merged_with_adc_job_date(self):
        """accu + adc merges self.time_period with other.job_date."""
        accu = Accumulation()
        accu += self.create_adc_result()
        accu.time_period = [datetime(2023, 1, 3), datetime(2023, 1, 5)]
        adc = self.create_adc_result()
        adc.job_date = datetime(2023, 1, 1)
        r = accu + adc
        self.assertEqual(r.time_period, [datetime(2023, 1, 1), datetime(2023, 1, 5)])
    def test_iadd_adc_without_job_date_sets_time_period_none(self):
        """empty accu += adc without job_date gets time_period None."""
        accu = Accumulation()
        adc = self.create_adc_result()
        adc.job_date = None
        accu += adc
        self.assertIsNone(accu.time_period)
    def test_get_accu_by_index_without_time_period(self):
        """get_accu_by_index without time information must not crash."""
        accu = Accumulation()
        adc = self.create_adc_result()
        adc.index = [(0, 1), (1, 2)]
        accu += adc
        accu.time_period = None
        r = accu.get_accu_by_index(0)
        self.assertIsNone(r.time_period)
    def test_write_to_tecmag_without_time_period_raises(self):
        """write_to_tecmag without time information must raise ValueError."""
        accu = Accumulation()
        accu += self.create_adc_result()
        accu.time_period = None
        self.assertRaises(ValueError, accu.write_to_tecmag, "/tmp/damaris_tecmag_no_time.tnt")
        self.assertTrue(accu.lock.acquire(timeout=1), "lock leaked after ValueError in write_to_tecmag")
        accu.lock.release()
    def test_empty_state_accessors(self):
        """Empty Accumulation accessors must return ndarrays, min/max helpers 0."""
        accu = Accumulation()
        self.assertIsInstance(accu.x, np.ndarray)
        self.assertEqual(accu.x.size, 0)
        self.assertIsInstance(accu.get_ydata(), np.ndarray)
        self.assertEqual(accu.get_ydata().size, 0)
        self.assertIsInstance(accu.get_yerr(0), np.ndarray)
        self.assertEqual(accu.get_yerr(0).size, 0)
        self.assertEqual(accu.get_xmin(), 0)
        self.assertEqual(accu.get_xmax(), 0)
        self.assertEqual(accu.get_ymin(), 0)
        self.assertEqual(accu.get_ymax(), 0)
    def test_get_yerr_without_statistics_on_empty(self):
        """get_yerr on an empty accumulation without statistics must not crash."""
        accu = Accumulation(error=False)
        err = accu.get_yerr(0)
        self.assertIsInstance(err, np.ndarray)
        self.assertEqual(err.size, 0)
    def test_constructor_coerces_lists(self):
        """Plain lists passed to the constructor must become numpy arrays."""
        x = [0.0, 1.0, 2.0]
        y = [[10, 20, 30], [15, 25, 35]]
        y_2 = [[100.0, 400.0, 900.0], [225.0, 625.0, 1225.0]]
        accu = Accumulation(x=x, y=y, y_2=y_2, n=1,
                            index=[(0, 2)], sampl_freq=1000.0, error=True)
        self.assertIsInstance(accu.x, np.ndarray)
        np.testing.assert_array_equal(accu.x, [0.0, 1.0, 2.0])
        for ch in accu.y:
            self.assertIsInstance(ch, np.ndarray)
        for ch in accu.y_square:
            self.assertIsInstance(ch, np.ndarray)
        np.testing.assert_array_equal(accu.y[0], [10, 20, 30])
        np.testing.assert_array_equal(accu.y_square[0], [100.0, 400.0, 900.0])
 if __name__ == "__main__":
    unittest.main()
@@ -0,0 +1,29 @@
 import unittest
 from damaris.data.Config_Result import Config_Result
 class TestConfigResult(unittest.TestCase):
    def test_constructor_with_no_arguments(self):
        """Test initializer with no arguments."""
        cr = Config_Result()
        self.assertEqual(cr.get_config_dictionary(), {})
        self.assertEqual(cr.description, {})
    def test_constructor_with_arguments(self):
        """Test initializer with config and description arguments."""
        config = {"a": 1}
        desc = {"b": 2}
        cr = Config_Result(config=config, desc=desc)
        self.assertEqual(cr.get_config_dictionary(), config)
        self.assertEqual(cr.description, desc)
    def test_get_set_config(self):
        cr = Config_Result()
        cr.set_config("key", "value")
        self.assertEqual(cr.get_config("key"), "value")
        self.assertIsNone(cr.get_config("missing"))
 if __name__ == "__main__":
    unittest.main()
@@ -0,0 +1,44 @@
 import unittest
 import numpy as np
 from damaris.data.DamarisFFT import DamarisFFT
 class TestDamarisFFT(unittest.TestCase):
    @staticmethod
    def make_fft():
        fft = DamarisFFT()
        fft.sampling_rate = 100.0
        fft.x = np.arange(10, dtype="float32") / 100.0
        fft.y = [np.arange(10, dtype="float32")]
        fft.xlabel = "Time / s"
        return fft
    def test_clip_without_arguments_is_placeholder(self):
        """clip() without arguments returns self unchanged (placeholder use)."""
        fft = self.make_fft()
        self.assertIs(fft.clip(), fft)
        self.assertEqual(len(fft.x), 10)
        np.testing.assert_array_equal(fft.y[0], np.arange(10, dtype="float32"))
    def test_clip_swaps_reversed_bounds(self):
        fft = self.make_fft()
        fft.clip(start=0.05, stop=0.01)
        expected_x = (np.arange(10, dtype="float32") / 100.0)[1:5]
        np.testing.assert_array_equal(fft.x, expected_x)
        np.testing.assert_array_equal(fft.y[0], np.arange(1, 5, dtype="float32"))
    def test_clip_single_bound(self):
        fft = self.make_fft()
        fft.clip(start=0.02)
        self.assertEqual(len(fft.x), 7)
        self.assertEqual(len(fft.y[0]), 7)
    def test_clip_too_close_raises(self):
        fft = self.make_fft()
        self.assertRaises(ValueError, fft.clip, 0.021, 0.029)
 if __name__ == "__main__":
    unittest.main()
@@ -0,0 +1,54 @@
 import unittest
 import numpy as np
 from damaris.data.Drawable import Drawable
 class TestDrawable(unittest.TestCase):
    def test_initial_types(self):
        """x must start as an empty ndarray, y as a list of arrays."""
        d = Drawable()
        self.assertIsInstance(d.x, np.ndarray)
        self.assertEqual(d.x.size, 0)
        self.assertIsInstance(d.y, list)
    def test_empty_min_max_helpers(self):
        """min/max helpers must return 0 instead of raising on empty data."""
        d = Drawable()
        self.assertEqual(d.get_xmin(), 0)
        self.assertEqual(d.get_xmax(), 0)
        self.assertEqual(d.get_xminpos(), 0)
        self.assertEqual(d.get_ymin(), 0)
        self.assertEqual(d.get_ymax(), 0)
        self.assertEqual(d.get_yminpos(), 0)
    def test_min_max_helpers_with_data(self):
        d = Drawable()
        d.x = np.array([-1.0, 0.0, 2.0, 5.0])
        d.y = [np.array([1.0, -2.0, 3.0]), np.array([0.5, 4.0, -0.5])]
        self.assertEqual(d.get_xmin(), -1.0)
        self.assertEqual(d.get_xmax(), 5.0)
        self.assertEqual(d.get_xminpos(), 2.0)
        self.assertEqual(d.get_ymin(), -2.0)
        self.assertEqual(d.get_ymax(), 4.0)
        self.assertEqual(d.get_yminpos(), 0.5)
    def test_yminpos_without_positive_values(self):
        d = Drawable()
        d.x = np.array([1.0])
        d.y = [np.array([-1.0, -2.0])]
        self.assertEqual(d.get_yminpos(), 0)
    def test_set_xdata_set_ydata(self):
        d = Drawable()
        d.x = np.zeros(3)
        d.y = [np.zeros(3)]
        d.set_xdata(1, 5.0)
        d.set_ydata(0, 1, 7.0)
        self.assertEqual(d.get_xdata()[1], 5.0)
        self.assertEqual(d.get_ydata(0)[1], 7.0)
 if __name__ == "__main__":
    unittest.main()
@@ -0,0 +1,23 @@
 import unittest
 import numpy as np
 from damaris.data.Error_Result import Error_Result
 class TestErrorResult(unittest.TestCase):
    def test_plotdata_are_ndarrays(self):
        """get_xdata/get_ydata must return numpy arrays like every Drawable."""
        er = Error_Result("core failed")
        self.assertIsInstance(er.get_xdata(), np.ndarray)
        self.assertIsInstance(er.get_ydata(), np.ndarray)
        np.testing.assert_array_equal(er.get_xdata(), [0.0])
        np.testing.assert_array_equal(er.get_ydata(), [0.0])
    def test_add_returns_self(self):
        er = Error_Result("msg")
        self.assertIs(er + 1, er)
 if __name__ == "__main__":
    unittest.main()
@@ -0,0 +1,70 @@
 import sys
 import threading
 import unittest
 from damaris.gui.ExperimentHandling import ExperimentHandling
 from damaris.gui.ResultHandling import ResultHandling
 class _FakeWriter:
    def __init__(self):
        self.sent = []
    def send_next(self, job, quit=False):
        self.sent.append(job)
 class _FakeResultIterator:
    def __init__(self):
        self.quit_flag = threading.Event()
    def __iter__(self):
        return iter([])
 class TestSandboxStdoutRestore(unittest.TestCase):
    """
    sys.stdout/sys.stderr are process-global: the sandbox redirect in
    run() must be undone even when the script raises or returns early.
    """
    def test_experiment_stdout_restored_after_script_exception(self):
        orig_stdout = sys.stdout
        orig_stderr = sys.stderr
        handled = ExperimentHandling("raise ValueError('boom')", None, None,
                                     log_callback=lambda line: None)
        handled.run()
        self.assertIs(sys.stdout, orig_stdout)
        self.assertIs(sys.stderr, orig_stderr)
        self.assertIsNotNone(handled.raised_exception)
    def test_experiment_stdout_restored_on_success(self):
        orig_stdout = sys.stdout
        writer = _FakeWriter()
        handled = ExperimentHandling("print('hello')\nexperiment = lambda: iter([])",
                                     writer, None, log_callback=lambda line: None)
        handled.run()
        self.assertIs(sys.stdout, orig_stdout)
        self.assertIsNone(handled.raised_exception)
    def test_result_stdout_restored_after_script_exception(self):
        orig_stdout = sys.stdout
        orig_stderr = sys.stderr
        handling = ResultHandling("raise ValueError('boom')", _FakeResultIterator(),
                                  None, log_callback=lambda line: None)
        handling.run()
        self.assertIs(sys.stdout, orig_stdout)
        self.assertIs(sys.stderr, orig_stderr)
        self.assertIsNotNone(handling.raised_exception)
    def test_result_stdout_restored_without_result_function(self):
        orig_stdout = sys.stdout
        handling = ResultHandling("x = 1", _FakeResultIterator(), None,
                                  log_callback=lambda line: None)
        handling.run()
        self.assertIs(sys.stdout, orig_stdout)
        self.assertIsNone(handling.raised_exception)
 if __name__ == "__main__":
    unittest.main()
@@ -0,0 +1,86 @@
 import io
 import os
 import tempfile
 import unittest
 import numpy as np
 import tables
 from damaris.data.MeasurementResult import MeasurementResult, read_from_hdf
 class TestMeasurementResult(unittest.TestCase):
    def test_add_zero_preserves_data(self):
        """mr + 0 must return a MeasurementResult with identical data."""
        mr = MeasurementResult("test_quantity")
        for i in range(3):
            mr[i] = float(i * i)
        mr2 = mr + 0
        self.assertIsInstance(mr2, MeasurementResult)
        self.assertEqual(mr2.quantity_name, "test_quantity")
        np.testing.assert_array_equal(mr2.get_xdata(), mr.get_xdata())
        np.testing.assert_array_equal(mr2.get_ydata(), mr.get_ydata())
    def test_add_zero_returns_independent_copy(self):
        """Changing the copy must not change the original."""
        mr = MeasurementResult("q")
        mr[1.0] = 5.0
        mr2 = mr + 0
        self.assertIsNot(mr2[1.0], mr[1.0])
        mr2[1.0] = mr2[1.0] + 100.0
        self.assertEqual(mr[1.0].mean(), 5.0)
    def test_add_nonzero_raises(self):
        mr = MeasurementResult("q")
        self.assertRaises(Exception, mr.__add__, 1)
    def test_get_lineplotdata_returns_means(self):
        """get_lineplotdata must return the accumulated means, not self.y."""
        mr = MeasurementResult("test_quantity")
        for i in range(3):
            mr[float(i)] = float(i * i)
        k, v = mr.get_lineplotdata()
        self.assertIsInstance(k, np.ndarray)
        self.assertIsInstance(v, np.ndarray)
        self.assertEqual(k.shape, v.shape)
        np.testing.assert_array_equal(v, mr.get_ydata())
        np.testing.assert_array_equal(v, [0.0, 1.0, 4.0])
    def test_get_lineplotdata_empty(self):
        """get_lineplotdata of an empty result must return empty arrays."""
        mr = MeasurementResult("q")
        k, v = mr.get_lineplotdata()
        self.assertEqual(k.shape[0], 0)
        self.assertEqual(v.shape[0], 0)
    def test_write_to_csv(self):
        mr = MeasurementResult("q")
        mr[1.0] = 5.0
        mr[2.0] = 7.0
        buf = io.StringIO()
        mr.write_to_csv(buf)
        lines = buf.getvalue().splitlines()
        self.assertEqual(lines[0], "# quantity:q")
        self.assertEqual(lines[1], "# x y ysigma n")
        self.assertEqual(len(lines), 4)
        self.assertEqual(lines[2].split()[3], "1")
        self.assertEqual(lines[3].split()[3], "1")
    def test_write_to_hdf_roundtrip(self):
        mr = MeasurementResult("q")
        mr[1.0] = 5.0
        mr[2.0] = 7.0
        with tempfile.TemporaryDirectory() as tmpdir:
            path = os.path.join(tmpdir, "test.h5")
            with tables.open_file(path, mode="w") as h5file:
                mr.write_to_hdf(h5file, "/", "mr", "test result")
            with tables.open_file(path, mode="r") as h5file:
                mr2 = read_from_hdf(h5file.get_node("/mr"))
        self.assertIsNotNone(mr2)
        self.assertEqual(mr2.quantity_name, "q")
        np.testing.assert_array_equal(mr2.get_xdata(), mr.get_xdata())
        np.testing.assert_array_equal(mr2.get_ydata(), mr.get_ydata())
 if __name__ == "__main__":
    unittest.main()
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@@ -990,6 +1014,9 @@ requires-dist = [
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