Expand size of a raster with no data

Discussion created by blackhawk0093 on Aug 22, 2012
Latest reply on Sep 4, 2012 by simply_gis
My end goal is to have two rasters with the exact same extent (post-processing software requires identical extents). One of my rasters is too small, and I need to expand its size to match the larger raster, basically adding no data around the original raster. Is this possible? There are a lot of options for clipping but I cannot find a way to expand or add no data. The small raster is originally created byinterpolating (IDW) a set of points with a polyline barrier. Any ideas?