How do I get only parts of a raster?

Discussion created by annse on Nov 9, 2010
Latest reply on Nov 10, 2010 by annse
I am looking at different characteristics in watersheds and I want to know how to delete parts of a raster that is outside the polygon boundries I am interested in. For instance if I do an interpolation from points to raster the resulting raster extends outside the edge of my area of interest. How do I delete the "outside" parts? Does anyone know?

The same goes for elevation data I have recieved, it is for a a larger area then I am interested in, how do I exclude what I dont want to be part in my continous work?