diff --git a/src/gui_qt/_py/smoothdialog.py b/src/gui_qt/_py/smoothdialog.py
index 634fde5..7d2d758 100644
--- a/src/gui_qt/_py/smoothdialog.py
+++ b/src/gui_qt/_py/smoothdialog.py
@@ -1,10 +1,11 @@
 # -*- coding: utf-8 -*-
 
-# Form implementation generated from reading ui file 'resources/_ui/smoothdialog.ui'
+# Form implementation generated from reading ui file 'src/resources/_ui/smoothdialog.ui'
 #
-# Created by: PyQt5 UI code generator 5.12.3
+# Created by: PyQt5 UI code generator 5.15.10
 #
-# WARNING! All changes made in this file will be lost!
+# WARNING: Any manual changes made to this file will be lost when pyuic5 is
+# run again.  Do not edit this file unless you know what you are doing.
 
 
 from PyQt5 import QtCore, QtGui, QtWidgets
@@ -17,9 +18,37 @@ class Ui_SmoothDialog(object):
         self.gridLayout = QtWidgets.QGridLayout(SmoothDialog)
         self.gridLayout.setSpacing(3)
         self.gridLayout.setObjectName("gridLayout")
+        spacerItem = QtWidgets.QSpacerItem(20, 40, QtWidgets.QSizePolicy.Minimum, QtWidgets.QSizePolicy.Expanding)
+        self.gridLayout.addItem(spacerItem, 7, 0, 1, 1)
         self.frac_label = QtWidgets.QLabel(SmoothDialog)
         self.frac_label.setObjectName("frac_label")
-        self.gridLayout.addWidget(self.frac_label, 1, 0, 1, 1)
+        self.gridLayout.addWidget(self.frac_label, 2, 0, 1, 1)
+        self.line = QtWidgets.QFrame(SmoothDialog)
+        self.line.setFrameShape(QtWidgets.QFrame.HLine)
+        self.line.setFrameShadow(QtWidgets.QFrame.Sunken)
+        self.line.setObjectName("line")
+        self.gridLayout.addWidget(self.line, 5, 0, 1, 2)
+        self.widget = QtWidgets.QWidget(SmoothDialog)
+        self.widget.setObjectName("widget")
+        self.horizontalLayout_2 = QtWidgets.QHBoxLayout(self.widget)
+        self.horizontalLayout_2.setContentsMargins(0, 0, 0, 0)
+        self.horizontalLayout_2.setSpacing(3)
+        self.horizontalLayout_2.setObjectName("horizontalLayout_2")
+        self.label = QtWidgets.QLabel(self.widget)
+        self.label.setObjectName("label")
+        self.horizontalLayout_2.addWidget(self.label)
+        self.polynom_spinBox = QtWidgets.QSpinBox(self.widget)
+        self.polynom_spinBox.setMinimum(1)
+        self.polynom_spinBox.setMaximum(3)
+        self.polynom_spinBox.setObjectName("polynom_spinBox")
+        self.horizontalLayout_2.addWidget(self.polynom_spinBox)
+        self.gridLayout.addWidget(self.widget, 3, 0, 1, 2)
+        self.y_checkBox = QtWidgets.QCheckBox(SmoothDialog)
+        self.y_checkBox.setObjectName("y_checkBox")
+        self.gridLayout.addWidget(self.y_checkBox, 6, 1, 1, 1)
+        self.x_checkBox = QtWidgets.QCheckBox(SmoothDialog)
+        self.x_checkBox.setObjectName("x_checkBox")
+        self.gridLayout.addWidget(self.x_checkBox, 6, 0, 1, 1)
         self.widget_2 = QtWidgets.QWidget(SmoothDialog)
         self.widget_2.setObjectName("widget_2")
         self.horizontalLayout_3 = QtWidgets.QHBoxLayout(self.widget_2)
@@ -35,37 +64,17 @@ class Ui_SmoothDialog(object):
         self.iter_spinBox.setProperty("value", 1)
         self.iter_spinBox.setObjectName("iter_spinBox")
         self.horizontalLayout_3.addWidget(self.iter_spinBox)
-        self.gridLayout.addWidget(self.widget_2, 3, 0, 1, 2)
-        self.line = QtWidgets.QFrame(SmoothDialog)
-        self.line.setFrameShape(QtWidgets.QFrame.HLine)
-        self.line.setFrameShadow(QtWidgets.QFrame.Sunken)
-        self.line.setObjectName("line")
-        self.gridLayout.addWidget(self.line, 4, 0, 1, 2)
-        self.buttonBox = QtWidgets.QDialogButtonBox(SmoothDialog)
-        self.buttonBox.setOrientation(QtCore.Qt.Horizontal)
-        self.buttonBox.setStandardButtons(QtWidgets.QDialogButtonBox.Apply|QtWidgets.QDialogButtonBox.Cancel|QtWidgets.QDialogButtonBox.Ok)
-        self.buttonBox.setObjectName("buttonBox")
-        self.gridLayout.addWidget(self.buttonBox, 7, 0, 1, 2)
-        self.widget = QtWidgets.QWidget(SmoothDialog)
-        self.widget.setObjectName("widget")
-        self.horizontalLayout_2 = QtWidgets.QHBoxLayout(self.widget)
-        self.horizontalLayout_2.setContentsMargins(0, 0, 0, 0)
-        self.horizontalLayout_2.setSpacing(3)
-        self.horizontalLayout_2.setObjectName("horizontalLayout_2")
-        self.label = QtWidgets.QLabel(self.widget)
-        self.label.setObjectName("label")
-        self.horizontalLayout_2.addWidget(self.label)
-        self.polynom_spinBox = QtWidgets.QSpinBox(self.widget)
-        self.polynom_spinBox.setMinimum(1)
-        self.polynom_spinBox.setMaximum(3)
-        self.polynom_spinBox.setObjectName("polynom_spinBox")
-        self.horizontalLayout_2.addWidget(self.polynom_spinBox)
-        self.gridLayout.addWidget(self.widget, 2, 0, 1, 2)
+        self.gridLayout.addWidget(self.widget_2, 4, 0, 1, 2)
         self.frac_spinBox = QtWidgets.QSpinBox(SmoothDialog)
         self.frac_spinBox.setMinimum(1)
         self.frac_spinBox.setMaximum(999)
         self.frac_spinBox.setObjectName("frac_spinBox")
-        self.gridLayout.addWidget(self.frac_spinBox, 1, 1, 1, 1)
+        self.gridLayout.addWidget(self.frac_spinBox, 2, 1, 1, 1)
+        self.buttonBox = QtWidgets.QDialogButtonBox(SmoothDialog)
+        self.buttonBox.setOrientation(QtCore.Qt.Horizontal)
+        self.buttonBox.setStandardButtons(QtWidgets.QDialogButtonBox.Apply|QtWidgets.QDialogButtonBox.Cancel|QtWidgets.QDialogButtonBox.Ok)
+        self.buttonBox.setObjectName("buttonBox")
+        self.gridLayout.addWidget(self.buttonBox, 8, 0, 1, 2)
         self.comboBox = QtWidgets.QComboBox(SmoothDialog)
         self.comboBox.setObjectName("comboBox")
         self.comboBox.addItem("")
@@ -77,22 +86,17 @@ class Ui_SmoothDialog(object):
         self.comboBox.addItem("")
         self.comboBox.addItem("")
         self.comboBox.addItem("")
-        self.gridLayout.addWidget(self.comboBox, 0, 0, 1, 2)
-        spacerItem = QtWidgets.QSpacerItem(20, 40, QtWidgets.QSizePolicy.Minimum, QtWidgets.QSizePolicy.Expanding)
-        self.gridLayout.addItem(spacerItem, 6, 0, 1, 1)
-        self.y_checkBox = QtWidgets.QCheckBox(SmoothDialog)
-        self.y_checkBox.setObjectName("y_checkBox")
-        self.gridLayout.addWidget(self.y_checkBox, 5, 1, 1, 1)
-        self.x_checkBox = QtWidgets.QCheckBox(SmoothDialog)
-        self.x_checkBox.setObjectName("x_checkBox")
-        self.gridLayout.addWidget(self.x_checkBox, 5, 0, 1, 1)
+        self.gridLayout.addWidget(self.comboBox, 1, 0, 1, 2)
+        self.label_2 = QtWidgets.QLabel(SmoothDialog)
+        self.label_2.setObjectName("label_2")
+        self.gridLayout.addWidget(self.label_2, 0, 0, 1, 2)
         self.frac_label.setBuddy(self.frac_spinBox)
-        self.label_3.setBuddy(self.iter_spinBox)
         self.label.setBuddy(self.polynom_spinBox)
+        self.label_3.setBuddy(self.iter_spinBox)
 
         self.retranslateUi(SmoothDialog)
-        self.buttonBox.accepted.connect(SmoothDialog.accept)
-        self.buttonBox.rejected.connect(SmoothDialog.reject)
+        self.buttonBox.accepted.connect(SmoothDialog.accept) # type: ignore
+        self.buttonBox.rejected.connect(SmoothDialog.reject) # type: ignore
         QtCore.QMetaObject.connectSlotsByName(SmoothDialog)
         SmoothDialog.setTabOrder(self.comboBox, self.frac_spinBox)
         SmoothDialog.setTabOrder(self.frac_spinBox, self.polynom_spinBox)
@@ -104,9 +108,11 @@ class Ui_SmoothDialog(object):
         _translate = QtCore.QCoreApplication.translate
         SmoothDialog.setWindowTitle(_translate("SmoothDialog", "1D smoothing filter"))
         self.frac_label.setText(_translate("SmoothDialog", "Window length"))
-        self.label_3.setText(_translate("SmoothDialog", "Iterations"))
         self.label.setText(_translate("SmoothDialog", "Polynomial degree"))
         self.polynom_spinBox.setToolTip(_translate("SmoothDialog", "Deg"))
+        self.y_checkBox.setText(_translate("SmoothDialog", "y log-spaced?"))
+        self.x_checkBox.setText(_translate("SmoothDialog", "x log-spaced?"))
+        self.label_3.setText(_translate("SmoothDialog", "Iterations"))
         self.frac_spinBox.setToolTip(_translate("SmoothDialog", "<html><head/><body><p>Number of data points used as smoothing window.</p></body></html>"))
         self.comboBox.setItemText(0, _translate("SmoothDialog", "Moving mean"))
         self.comboBox.setItemText(1, _translate("SmoothDialog", "Savitzky-Golay"))
@@ -117,5 +123,4 @@ class Ui_SmoothDialog(object):
         self.comboBox.setItemText(6, _translate("SmoothDialog", "Moving maximum"))
         self.comboBox.setItemText(7, _translate("SmoothDialog", "Moving minimum"))
         self.comboBox.setItemText(8, _translate("SmoothDialog", "Moving sum"))
-        self.y_checkBox.setText(_translate("SmoothDialog", "y log-spaced?"))
-        self.x_checkBox.setText(_translate("SmoothDialog", "x log-spaced?"))
+        self.label_2.setText(_translate("SmoothDialog", "<html><head/><body><p><span style=\" font-weight:600;\">Note:</span> Sets must be sorted for correct results</p></body></html>"))
diff --git a/src/resources/_ui/smoothdialog.ui b/src/resources/_ui/smoothdialog.ui
index e26b521..19e63ec 100644
--- a/src/resources/_ui/smoothdialog.ui
+++ b/src/resources/_ui/smoothdialog.ui
@@ -17,7 +17,20 @@
    <property name="spacing">
     <number>3</number>
    </property>
-   <item row="1" column="0">
+   <item row="7" column="0">
+    <spacer name="verticalSpacer">
+     <property name="orientation">
+      <enum>Qt::Vertical</enum>
+     </property>
+     <property name="sizeHint" stdset="0">
+      <size>
+       <width>20</width>
+       <height>40</height>
+      </size>
+     </property>
+    </spacer>
+   </item>
+   <item row="2" column="0">
     <widget class="QLabel" name="frac_label">
      <property name="text">
       <string>Window length</string>
@@ -27,68 +40,14 @@
      </property>
     </widget>
    </item>
-   <item row="3" column="0" colspan="2">
-    <widget class="QWidget" name="widget_2" native="true">
-     <layout class="QHBoxLayout" name="horizontalLayout_3">
-      <property name="spacing">
-       <number>3</number>
-      </property>
-      <property name="leftMargin">
-       <number>0</number>
-      </property>
-      <property name="topMargin">
-       <number>0</number>
-      </property>
-      <property name="rightMargin">
-       <number>0</number>
-      </property>
-      <property name="bottomMargin">
-       <number>0</number>
-      </property>
-      <item>
-       <widget class="QLabel" name="label_3">
-        <property name="text">
-         <string>Iterations</string>
-        </property>
-        <property name="buddy">
-         <cstring>iter_spinBox</cstring>
-        </property>
-       </widget>
-      </item>
-      <item>
-       <widget class="QSpinBox" name="iter_spinBox">
-        <property name="maximum">
-         <number>3</number>
-        </property>
-        <property name="singleStep">
-         <number>1</number>
-        </property>
-        <property name="value">
-         <number>1</number>
-        </property>
-       </widget>
-      </item>
-     </layout>
-    </widget>
-   </item>
-   <item row="4" column="0" colspan="2">
+   <item row="5" column="0" colspan="2">
     <widget class="Line" name="line">
      <property name="orientation">
       <enum>Qt::Horizontal</enum>
      </property>
     </widget>
    </item>
-   <item row="7" column="0" colspan="2">
-    <widget class="QDialogButtonBox" name="buttonBox">
-     <property name="orientation">
-      <enum>Qt::Horizontal</enum>
-     </property>
-     <property name="standardButtons">
-      <set>QDialogButtonBox::Apply|QDialogButtonBox::Cancel|QDialogButtonBox::Ok</set>
-     </property>
-    </widget>
-   </item>
-   <item row="2" column="0" colspan="2">
+   <item row="3" column="0" colspan="2">
     <widget class="QWidget" name="widget" native="true">
      <layout class="QHBoxLayout" name="horizontalLayout_2">
       <property name="spacing">
@@ -132,7 +91,65 @@
      </layout>
     </widget>
    </item>
-   <item row="1" column="1">
+   <item row="6" column="1">
+    <widget class="QCheckBox" name="y_checkBox">
+     <property name="text">
+      <string>y log-spaced?</string>
+     </property>
+    </widget>
+   </item>
+   <item row="6" column="0">
+    <widget class="QCheckBox" name="x_checkBox">
+     <property name="text">
+      <string>x log-spaced?</string>
+     </property>
+    </widget>
+   </item>
+   <item row="4" column="0" colspan="2">
+    <widget class="QWidget" name="widget_2" native="true">
+     <layout class="QHBoxLayout" name="horizontalLayout_3">
+      <property name="spacing">
+       <number>3</number>
+      </property>
+      <property name="leftMargin">
+       <number>0</number>
+      </property>
+      <property name="topMargin">
+       <number>0</number>
+      </property>
+      <property name="rightMargin">
+       <number>0</number>
+      </property>
+      <property name="bottomMargin">
+       <number>0</number>
+      </property>
+      <item>
+       <widget class="QLabel" name="label_3">
+        <property name="text">
+         <string>Iterations</string>
+        </property>
+        <property name="buddy">
+         <cstring>iter_spinBox</cstring>
+        </property>
+       </widget>
+      </item>
+      <item>
+       <widget class="QSpinBox" name="iter_spinBox">
+        <property name="maximum">
+         <number>3</number>
+        </property>
+        <property name="singleStep">
+         <number>1</number>
+        </property>
+        <property name="value">
+         <number>1</number>
+        </property>
+       </widget>
+      </item>
+     </layout>
+    </widget>
+   </item>
+   <item row="2" column="1">
     <widget class="QSpinBox" name="frac_spinBox">
      <property name="toolTip">
       <string>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p&gt;Number of data points used as smoothing window.&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
@@ -145,7 +162,17 @@
      </property>
     </widget>
    </item>
-   <item row="0" column="0" colspan="2">
+   <item row="8" column="0" colspan="2">
+    <widget class="QDialogButtonBox" name="buttonBox">
+     <property name="orientation">
+      <enum>Qt::Horizontal</enum>
+     </property>
+     <property name="standardButtons">
+      <set>QDialogButtonBox::Apply|QDialogButtonBox::Cancel|QDialogButtonBox::Ok</set>
+     </property>
+    </widget>
+   </item>
+   <item row="1" column="0" colspan="2">
     <widget class="QComboBox" name="comboBox">
      <item>
       <property name="text">
@@ -194,30 +221,13 @@
      </item>
     </widget>
    </item>
-   <item row="6" column="0">
-    <spacer name="verticalSpacer">
-     <property name="orientation">
-      <enum>Qt::Vertical</enum>
-     </property>
-     <property name="sizeHint" stdset="0">
-      <size>
-       <width>20</width>
-       <height>40</height>
-      </size>
-     </property>
-    </spacer>
-   </item>
-   <item row="5" column="1">
-    <widget class="QCheckBox" name="y_checkBox">
+   <item row="0" column="0" colspan="2">
+    <widget class="QLabel" name="label_2">
      <property name="text">
-      <string>y log-spaced?</string>
+      <string>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p&gt;&lt;span style=&quot; font-weight:600;&quot;&gt;Note:&lt;/span&gt; Sets must be sorted for correct results&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
      </property>
-    </widget>
-   </item>
-   <item row="5" column="0">
-    <widget class="QCheckBox" name="x_checkBox">
-     <property name="text">
-      <string>x log-spaced?</string>
+     <property name="margin">
+      <number>3</number>
      </property>
     </widget>
    </item>