[GRASSLIST:4677] combine vector and raster operation in grass?

[Jeff D. Hamann]

----- Original Message -----
From: "Jeff D. Hamann" <jeff_hamann at hamanndonald.com>
To: <wingrass at grass.itc.it>
Sent: Monday, October 07, 2002 11:23 AM
Subject: combine vector and raster operation in grass?


>
> I'm trying to get/build "polygon" values by combining a raster layer and a
> polygon layer to get the number of pixels by polygon (like the arc/info
> combine function). I have converted the polygon layer into raster just
fine
> and that's where I get stuck. How do I perform a combine so that I get a
> table that contains the number of pixels from one layer in another. For
> example:
>
> taxlot
> 1
> 2
> 3
> .
> .
> .
> n
>
> combined with a raster layer that contains a classified image such that
the
> resulting "comination" of layers contains the following information:
>
> taxlot, timber_type, n_pixels
> 1, 3, 45
> 1, 14, 5
> 1, 78, 198
> 2, 5, 987
> 2, 9, 34
> .
> .
> .
> n_taxlots
>
> I hope I've explained the problem enough.
>
> Thanks,
> Jeff.
>
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