[GRASS-user] Using a polygon as a Mask

[António Rocha]

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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