topic Re: Raster values based on polygon boundary in Geoprocessing Questions

Raster values based on polygon boundary

surendarmohan — Sun, 05 Jan 2014 11:32:49 GMT

How do I obtain mean of DN values of a underlying raster layer only for such pixels that fall below a polygon boundary?

Re: Raster values based on polygon boundary

GeraldineEGGERMONT — Mon, 06 Jan 2014 09:45:05 GMT

Hi,
I'm not sure I understand your question, but try this:
- convert your polygon feature class to a raster using Feature to Raster
- Use this raster as a zone raster in the Zonal Statistics tool, with "MEAN" as statistics type.

Does this help?

Geraldine

Re: Raster values based on polygon boundary

DuncanHornby — Mon, 06 Jan 2014 10:28:53 GMT

If its the boundary and not the area (entire polygon) you are after then use the Feature to Line tool to convert your polygon to a polyline then use the Polyline to Raster tool (make sure snap raster environment is set to your raster) to convert the line to a raster representation of your polyline and then you can use the Zonal Statistics tool.

Re: Raster values based on polygon boundary

surendarmohan — Thu, 09 Jan 2014 09:52:15 GMT

Thanks. Got it!