I have a raster layer containing the elevation info., and another gridded layer (shapefile type). What I want to do is to calculate the mean elevation within each grid to have a single representative value.
Does anyone know how to handle this?
In ArcGIS Desktop, solving this problem involves becoming familiar with the zonal statistics tool.
You can achieve this using the v.rast.stats module in GRASS GIS
There is also a faster version of it on the GRASS AddOns page