Hi Timothy, I'm facing the same issue with a map that has no data values. Con(IsNull("raster"), FocalStatistics("raster", NbrRectangle(5,5, "CELL"), "MEAN"), "raster") is what I input, it worked but the map became coarser. How do I know which rectangle (e.g. "5,5") suits my data, in order to retain the original outlook in the first image? Here is the before and after.