I use QGIS 3.16. For a wildlife conectivity model I used the plugin Least-Cost Path. For robustness of paths I used 3 different cost rasters for the same start and end points. I want to know which paths are calculated in all three cost rasters (very robust), which just in 2 cost raster(medium robustness) and which just in 1 (not robust). How do I achieve this? Idea: give value 1 to each path, merge the 3 layers and sum up the values so that the path shown in each cost raster gets value 3.
But which tool to take? Or is there a better idea?