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I am working on a watershed analysis project. The goal of the project is to create a model that will simulate changes the effect that different land uses will have on the watershed as a whole.

Using python, I need to create a user friendly model that will allow a non-tech savvy person to accomplish the following:

"Paint"/select a group of cells in a raster land use layer and then change to their desired land use. For example, the user may wish to see what effect changing a certain area from developed industrial to forest would have on the watershed.

I have tried several options and have not had much luck with any of them.

Clipping a raster based on a polygon that the user would draw around the area they want to change. The problem with this approach is that the raster layer that is clipped is not easily merged back in with the original raster layer.

Arcscan - Raster painting toolbar: this tool seems as though it should work, however, it is limited in the way it will let you select cells. Rather than letting you select individual cells to then change, it will only let you select cells that are connected. This is easy enough to do within the attribute table of a raster layer.

Does ArcMap support the ability to select individual cells within a raster layer to then change those selected cells?

Thank you,

Joe Martin

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Hi Joe, welcome to GIS Stack Exchange :) Please see here for how to merge user accounts. – matt wilkie Jun 26 '13 at 20:44

There are several tools out there, a simple search on Google threw up these:

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Hornbydd, Thank you, I didn't think of looking outside of the programs in ArcMap. It is possible that these would work. I will definitely look into using them. Does anyone know of any tools inside of arcmap that would serve this same function? – user19505 Jun 26 '13 at 20:09
+1 Good find on the Aris Grid Editor. Now, how to incorporate this into a land use App... – Aaron Jun 26 '13 at 20:36

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