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Determine the range of values in one raster associated with certain values in another raster

Question asked by traggatmot on Oct 25, 2015
Latest reply on Oct 25, 2015 by Dan_Patterson

I have two rasters, one with thematic data, and the other with continuous data (floats). I am trying to calculate/determine the the range of float values associated with the different classes in my thematic raster. For instance, in my thematic raster, I have a class A. If there are 5 cells in my continuous raster data that overlay thematic cells of class A, and these 5 cell have values of 1.2, 3.7, -4.5, 6.23, -0.8, I would like the end result of my calculation to show:

Class A:  Range [-4.5 to 6.23] 
Class B:   .....and so on.

Does anyone know of a way to do this? I've been trying to determine if the raster overlay tools in ArcMap can provide this, but I haven't come across a solution yet. I'm hoping to avoid a very complicated equation in the raster calculator.

Another way to produce the analysis I am looking for would be to generate a histogram for each thematic class in one raster based on the associated (overlaid) values in another. Is this possible?

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