A change map is not being created

[taras-user]

A change map is not being created.
The source data have the same coverage and the same coordinate system

Use QGIS --- 3.34.13-Prizren Ubuntu 22.04

Errors when executing a Python script
ValueError: 255 отсутствует в списке

         Traceback (последний последний вызов):
          Файл "/home/taras/.local/share/QGIS/QGIS3/profiles/default/python/plugins/molusce/algorithms/models/area_analysis/manager.py", строка 110, in getChangeMap
          self.makeChangeMap()
          Файл "/home/taras/.local/share/QGIS/QGIS3/profiles/default/python/plugins/molusce/algorithms/models/area_analysis/manager.py", строка 135, in makeChangeMap
          band[i, j] = self.encode(r, c)
          Файл "/home/taras/.local/share/QGIS/QGIS3/profiles/default/python/plugins/molusce/algorithms/models/area_analysis/manager.py", строка 100, in encode
          return self.categories.index(initialClass) * m + self.categories.index(
         ValueError: 255 отсутствует в списке
           
          Python: 3.10.12 (main, Nov 6 2024, 20:22:13) [GCC 11.4.0]
                      Version: 3.34.13-Prizren Prizren, 222b59952c9
                    
         Python location:             
         /usr/share/qgis/python/home/taras/.local/share/QGIS/QGIS3/profiles/default/python/home/taras/. local/share/QGIS/QGIS3/profiles/default/python/plugins/usr/share/qgis/python/plugins/usr/lib/python310.zip/usr/lib/python3.10/usr/lib/python3.10/lib-dynload/home/taras/.local/lib/python3. 10/site-packages/usr/local/lib/python3.10/dist-packages/usr/lib/python3/dist-packages/usr/lib/python3.10/dist-packages/home/taras/. local/share/QGIS/QGIS3/profiles/default/python/usr/lib/python3/dist-packages/IPython/extensions/home/taras/QGIS/DNESTR_LIM/CORE_DATA/NDVI_SPAT_SEAS

[eduard-kazakov]

@RemeshevskiyValeriy is it related to #60 ?

[RemeshevskiyValeriy]

Yeah, it is related to #60

This error indicates that the list of unique values of the initial and final rasters does not match. At this stage, the list of unique values of the initial raster is the leading one.

I can assume that 255 is the "no data" value that is contained in the final raster. If this is the case, then you can try to fill "no data" pixels with pixel values from the initial raster, if this possible solution, in turn, is appropriate in the context of the study.