Python error when using a Mesh as terrain

[Vincentvd-T]

I get a python error for the profile tool when using a mesh as height layer. See the error below. It does not matter if you draw a section line or use a line layer for the section line. I tested it with a freshly create 2dm mesh in QGIS.

Steps to reproduce:

1. Add a mesh to QGIS and open the profile tool
2. Add the mesh layer to the profile tool
3. Draw a section line or use a layer
4. Optionally, click the "interpolate line" if a python error has not occured already. Pressing this button does force a render of the graph
5. Observe that you get a python error as below.

IndexError: list index out of range 
Traceback (most recent call last):
  File "C:\Users/<username>/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\profiletool\ui\ptdockwidget.py", line 338, in refreshPlot
    self.profiletoolcore.updateProfil(self.profiletoolcore.pointstoDraw, False, True)
  File "C:\Users/<username>/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\profiletool\tools\profiletool_core.py", line 197, in updateProfil
    self.profiles[i] = DataReaderTool().dataRasterReaderTool(
  File "C:\Users/<username>/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\profiletool\tools\dataReaderTool.py", line 135, in dataRasterReaderTool
    z = self._extractZValues(x, y)
  File "C:\Users/<username>/AppData/Roaming/QGIS/QGIS3\profiles\default/python/plugins\profiletool\tools\dataReaderTool.py", line 176, in _extractZValues
    ident = identifier.identify(
IndexError: list index out of range

[nicogodet]

Profile on mesh layer was implemented quickly and never fully tested.

Unfortunately, I won't have time to work on it.

[Vincentvd-T]

Alright, thanks for the quick reply. I saw on another issue that this plugin is basically deprecated for QGIS version 3.26 and higher. I tested the build-in elevation profile in the newest LTR and there meshes work fine. I suppose this issue can be closed then.

[nicogodet]

Not really deprecated for 3.26 and above.
Core profile tool still misses some features (copy values to clipboard as example).

I keep this open.