I am not able to resolve the problem that follows. I have some separate shapefiles files, each one representing a given species range. Some layers have multiple polygons.
I would prefer to solve this problem with R syntax, but as alternative option I could use QGIS.
After import these shapefiles and merging them, I would like to obtain a map representing the count of overlapping polygons. In other terms, my final output would be a sort of “heatmap” in which each cell has the value of the count of overlapping polygons (i.e. the sum of the species falling in a given cell).
Anyone could kind provide me the operative approach to accomplish this?
If required, I can provide the example layers that I'm using during my trials. Despite many many attempts, I have not reached any result.