I have a shapefile of range polygons. Each colored set of polygons represents a different group of species/genera/whatever.
I next overlay a 5x5 grid onto this map. And then use join attributes by location to find the number of grids that intersect each polygon
The final output gives me a column in the attribute table COUNT that indicates the number of grids intersected by the polygons.
################## NEXT PHASEI want to duplicate this same process entirely within R. First I load the same shapefile of range polygons into R using the rgdal package.
RangeShape
I next overlay a 5x5 grid onto this map. And then use join attributes by location to find the number of grids that intersect each polygon
The final output gives me a column in the attribute table COUNT that indicates the number of grids intersected by the polygons.
################## NEXT PHASEI want to duplicate this same process entirely within R. First I load the same shapefile of range polygons into R using the rgdal package.
RangeShape