Project: QGIS
Version: 3.16
We added some raster value position analysis tools with this new QGIS version: The Highest position in raster stack algorithm evaluates on a cell-by-cell basis the position of the raster with the highest value in a stack of rasters. Position counts start with 1 and range to the total number input rasters. The order of the input rasters is relevant for the algorithm.
This feature was developed by Clemens Raffler