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Thanks to both Bill and Nawajish, and as it turns out, the "Tabulate Area" tool was perfect!
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04-19-2011
03:20 PM
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Hello, This is a post which relates to an older thread I started (which attracted no replies, so I thought I would re-frame the question)... I want to get the variety and count of the number of raster cells within each zone (the zone is made up of regularly-sized polygons, or could even just be a raster with a larger cell size than my input raster) for each value that is found within each zone. It is sort of analogous to zonal statistics, but in this case, mean, range, etc. don't matter, what I want is an output table that looks like this: Cell ID, Raster Value, Count of Input Raster Values 1, 11, 3 1, 21, 45 1, 22, 0 1, 31, 21 1, 34, 200 2, 11, 13 2, 21, 4 2, 22, 20 2, 31, 111 2, 34, 0 ...and so on. Does anyone know if there is a way to do this? Thanks!
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04-05-2011
01:20 PM
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Hi, I'm wanting to perform an operation that is similar to running zonal statistics, but I'm working with a raster that contains categorical values, so mean, range, and even variety are not useful to me. I want to count the number of raster cells of each value within a set of equal-area polygons (my domain grid)... I've seen an older thread that recommends converting said raster into polygons, intersecting with the polygon grid (my "zone" dataset), then running Calculate Areas... but frankly, I'm working with 30-m resolution data and my machine keeps crashing out because this results in hundreds of millions of polygons (even if I don't conform to the original raster cell boundaries). Does anyone out there know if there's an easier way to do this? Thanks! -Tiffany
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03-30-2011
03:14 PM
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