fix matplotlib warnings

pyproject.toml

@@ -37,7 +37,7 @@ dependencies = [
     "imutils>=0.5.4",
     "ipympl>=0.9.1",
     "ipywidgets>=7.7.1",
-    "matplotlib>=3.5.1,<3.10.0",
+    "matplotlib>=3.5.1",
     "numpy>=1.21.6",
     "opencv-python>=4.8.1.78",
     "pynxtools-mpes>=0.2.1",

src/specsanalyzer/core.py

@@ -753,8 +753,8 @@ def update(v_vals, pos_x, pos_y, sigma_x, sigma_y, amplitude):
             fft_filt.set_data(np.abs(fft_filtered_new.T))
 
             nonlocal cont
-            for i in range(len(cont.collections)):
-                cont.collections[i].remove()
+            for path in cont.get_paths():
+                path.remove()
             cont = ax.contour(msk.T)
 
             edc.set_ydata(np.sum(filtered_new, 0))

src/specsscan/core.py

@@ -5,7 +5,6 @@
 import os
 import pathlib
 from importlib.util import find_spec
-from logging import warn
 from pathlib import Path
 from typing import Any
 from typing import Sequence
@@ -671,7 +670,7 @@ def process_sweep_scan(
         """
         ekin_step = kinetic_energy[1] - kinetic_energy[0]
         if not (np.diff(kinetic_energy) == ekin_step).all():
-            warn(
+            logger.warning(
                 "Conversion of sweep scans with non-equidistant energy steps "
                 "might produce wrong results!",
             )