[GRASS-user] Calculate statistics for raster values in polygons

[Luis Lisboa]

Hi all
I'm reading the v.rast.stats Help and I'm a bit confused. It says "Calculates
basic univariate statistics from a raster map only for the parts covered by
the specified vector map". But for instance if all my region is covered by
different polygons and, if I want to calculate for each polygon my average
value from raster, is this function helpful? (e.g. I have vector with zip
codes for my region and I want to calculate average elevation of each zip
code).

On Wed, Apr 21, 2010 at 6:21 PM, Jarek Jasiewicz <jarekj at amu.edu.pl> wrote:

> Luis Lisboa pisze:
>
>> Greetings
>>
>> I have a vectorial data that divides my region in sub-areas. I want to
>> calculate the average value of  a raster but instead for all pixel values, I
>> want to calculate the average of pixel values that are inside each polygonIs
>> this possible in GRASS? If yes, how?
>> Thank you
>> Luis
>> ------------------------------------------------------------------------
>>
>>
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> v.rast.stats
>
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