I have 45 tif tiles each of 20-50MB and a single shp file with about 4000 polygons. I want to run zonal histogram in Arcmap 10 to get the number of pixels with each value for each polygon. If I convert a single polygon from the shp to a raster and use it as the zone input, I can get an output that is correct. However, for the whole shp file either as polygons or as rasters, the tool runs and reports that it completes (very fast, a few seconds), but produces no table.
I think it's because there are too many zones, maybe?
My plan had been to run a batch of zonal histograms, one for each of the 45 tifs.
Am I right that I have too many zones?
And what options for workarounds do I have?