Thank you Christian
What I am affraid is that when I convert Vector to RASTER I will obtain
a mask that is not exacly the polygon in the boundaries of the polygon.
For instance, if a pixel is "cuttted" by the polygons boundaries is it
considered part odf the polygon or not?
Thanks
Antonio
Christian Schwartze wrote:
There is no way to use a vector geometry in mapcalculator (or mapcalc)
directly, hence, you have to convert it to raster before.
Christian.
--------------------------------------------------
From: "António Rocha" <antonio.ro...@deimos.com.pt>
Sent: Thursday, May 27, 2010 2:08 PM
To: "GRASS user list" <grass-user@lists.osgeo.org>
Subject: [GRASS-user] Using a polygon as a Mask
Greetings
I have polygon that I want to use to define an for which I want to
calculate some indicators (almost as a mask). Is it possible to use
it directly in mapcalculator or do I have to convert it to RASTER and
only then I can use it in mapcalculator as a mask?
Thanks
Best regards,
Antonio
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