AnsweredAssumed Answered

Count color content of raster

Question asked by scalesxd on Jun 20, 2016
Latest reply on Jun 21, 2016 by dkwiens

Hello,

 

I wasn't able to find something online that fit my needs, but I'm inexperienced with ArcMap and I thought someone here might be able to help.

 

I have this map of light pollution over a country, and within each county I want to add up the values of each pixel in a raster layer. The idea being to see how much of each colour is present in each county, and therefore how much light pollution is present.

 

It looks like this currently:

 

Galway.png

I have the spatial analyst toolbox, which I assumed is required. How best should I go about this analysis?

 

Thanks.

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