I have 40 overlapping raster grids (derived from flood modelling software) that I want to combine in such a way so as to retain only the maximum value in any of the given rasters at each grid location, in a new raster grid.
Is there any application or command using the QGIS suite that would permit this without being unwieldy?
Best Answer
Give the SAGA "Mosaik raster layers" tool a go:
From the 'Processing' menu, choose 'toolbox' - type 'mosaic' in the search box to reveal the "Mosaik raster layers" tool:
Launch the tool, choose your inputs, and note the "Overlapping Areas" option, which has a 'maximum' parameter:
If you're looking for something more automated, the GDAL tools will help.