how to extract raster values based on polygon

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02-18-2015 04:03 PM
EmmaGomez
New Contributor

I have a raster with 6 different values representing species richness. I am trying to evaluate the correspondence of that richness with a layer of 58 polygons that represent the location and home range of other species. Some of the 58 polygons overlap.

In the end for each polygon I need to know which raster value is present (0, 1, 2, 3, 4, 5, 6). I need to repeat this at least 100 times randomizing the polygons locations, therefore trying to visually count would consume too much time.

Is there a tool in ArcGIS that can help me complete this task? I am using ArcGIS 10.2.2 Standard License

Many thanks

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KyleBalke__GISP
Occasional Contributor III

Check out the Zonal Statistics tool (required Spatial Analyst Extension).  If you need to repeat you might consider using ModelBuilder or a Python script with the Zonal Stats tool.

http://resources.arcgis.com/en/help/main/10.1/index.html#//009z000000w7000000 

Kyle

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