Combine raster with shapefile

Discussion created by wouternelis on Mar 26, 2012
Latest reply on Mar 26, 2012 by wouternelis

I have two maps: a raster file with elevation data and a shapefile with postal code areas (polygons).
I would like to combine these two maps in order to calculate an mean/median elevation per area. I know the Spatial Join tool functions when using two shapefiles, but not when one map is a raster file.
For the sake of accuracy I prefer to not convert the shapefile into a raster file.
What tool can I use to solve my problem?