I have a raster of about 3million rows and 6 columns it has an attribute table joined from a CSV (CNN_result). I want to use look up (Spatial Analyst) tool but it took forever. Are there any other way or software that I can use to make it faster? Or does it have any difference if I use Python without using ArcPy? I want only the CNN_result column to be my raster value using lookup.
