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Is there a tool already created that will calculate the total area for each pixel value in a raster that falls within each zone in an overlayed poygon?

Syvertson

I am about to create a model to do this, but before I go and do that I want to be sure whether this exists already.

I need to find out the area of each pixel value from a raster within a zone from a polygon overlayed. The closest I have found to this so far is the "zonal statistics" tool in the ESRI Spatial Analyst Toolbox. Ultimately, I would like to join the table to the original polygon zone layer to add these values as attributes of the zone.

Thanks in advance,

Matt Syvertson

msyvertson@co.richland.nd.us

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Accepted answers

DarrenWiens2

I think you're looking for Tabulate Area, using a county feature layer as the zone input.

Tabulate Area illustration

All comments

DanPatterson_Retired

Zonal Statistics as Table—Help | ArcGIS for Desktop

cell area is cell width*cell height. Area is cell area * cell count

Syvertson

I might not have been clear about what I am trying to do, so I will use an example. Lets say I have a polygon layer which has all counties in the state, and I have a raster layer in which each pixel has a value range of 1-5. I would like to overlay the two and receive a table with the columns county,1,2,3,4, and 5. So for each line, I would like the county name, the area of value one in that county, the area of value 2 in the county, etc...

DarrenWiens2

I think you're looking for Tabulate Area, using a county feature layer as the zone input.

Tabulate Area illustration

Syvertson

Thanks Darren. That worked perfectly.

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