[GRASS-user] reclass raster with all unique values?

[Michael Treglia]

You might have already thought of these techniques, but here are two
options that quickly come to mind...

You should be be able to mask each watershed individually (from a vector
layer), and then run r.reclass on the area within each watershed boundary.

Alternatively, if you have a vector layer for watershed boundaries, what
about creating a numeric attribute in which you assign each unique
watershed a different number. Then, rasterize the watershed layer.

If you have a lot of watersheds, it seems like the second option would be
easier... and there obviously might be a more elegant solution that I'm not
aware of.

Hope that helps!
Mike


On Fri, Jul 5, 2013 at 2:03 PM, Stephen Sefick <sas0025 at auburn.edu> wrote:

> I have a raster map with watersheds that are the same value.  Is there an
> easy way to reclass the map with every distinc basin to have a unique value?
>
> many thanks,
>
>
> --
> Stephen Sefick
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