initial commit

generate_temperatures.py

@@ -0,0 +1,57 @@
+#!/usr/bin/python3.12
+import numpy as np
+import math
+
+def round_dynamic(x, rel_tol=1e-3, max_decimals=6, max_negative_decimals=3):
+    """
+    Dynamically round x so that the relative error is within rel_tol.
+    Supports negative decimals for large values.
+    """
+    if x == 0:
+        return 0.0
+
+    # Determine the required number of decimals (can be negative)
+    decimals = -int(math.floor(math.log10(rel_tol * abs(x))))
+
+    # Clamp within allowed range
+    decimals = max(-max_negative_decimals, min(max_decimals, decimals))
+
+    if decimals >= 0:
+        return round(x, decimals)
+    else:
+        # Round to nearest 10^(-decimals)
+        factor = 10 ** (-decimals)
+        return round(x / factor) * factor
+
+def generate_temperature_list_dynamic(dT=10, Tmin=10, Tmax=5000, rel_tol=5e-3):
+    r = (300 - dT) / 300.0
+
+    temps_down = []
+    T = 300
+    while T > Tmin:
+        T *= r
+        if T < Tmin:
+            break
+        temps_down.append(T)
+
+    inv_r = 1.0 / r
+    temps_up = []
+    T = 300
+    while T < Tmax:
+        T *= inv_r
+        if T > Tmax:
+            break
+        temps_up.append(T)
+
+    all_T = np.array(temps_down[::-1] + [300.0] + temps_up)
+
+    # Apply dynamic rounding
+    rounded_T = [round_dynamic(t, rel_tol=rel_tol) for t in all_T]
+    rounded_T = np.unique(rounded_T)
+
+    return rounded_T
+
+T = generate_temperature_list_dynamic(dT=30, rel_tol=5e-3)
+print(len(T))
+print(T)
+print(np.linspace(0, 100000, len(T), endpoint=True))