I created a plugin in QGIS 2 AND I used the qgis:rasterlayerstatistics , I could get the 'COUNT' information : pixels number, but when I migrate my plugin to version 3.4 I found out that this information (COUNT) is not available anymore .
is there any other way to have raster statistics about pixels number ?
Use the Raster layer unique values report tool instead. When the interface loads, make sure to create an output for the Unique values table parameter as this would contain the count information:
The output of this table will be an .html file which can be loaded from the Results Viewer (from the menubar: Processing > Results Viewer) and should look something like the following:
