I'm pretty new to arcGIS Pro so go easy on me. I'm trying to combine two rasters (.tif format) using the Combine tool in arcGIS Pro 2.4. The first raster is a map of US land cover at a 30x30m resolution (roughly 8 billion pixels). The second raster is US counties. There most common error I get when I try to do this is:
ERROR 010159: Unable to open VAT file of C:\cdl\combine_cdl.tif.
ERROR 010067: Error in executing grid expression.
Failed to execute (Combine).
I've tried shortening path lengths and making sure I have permissions to the drive. Also when the tool fails no file, VAT or anything else, is created. I've also tried moving files inside a local geodatabase with similar results.
Essentially, I'm trying to spatial merge the two files so that I have County FID's associated with land cover. Next steps involve joining data based on FID and landcover to heatmap. If there is a better way to go about this please let me know. I've tried vectoring the land cover raster by doing Raster to Point>Fishnet>Feature to Polygon to get a shapefile to work with, but the 8 Billion values exceeds arcGIS Pro's limit.
Any input is much appreciated.