[GRASS-user] Calculating mode value for each polygon

[Daniel Victoria]

This should be done by v.rast.stats but, from the manual I don't think
it includes mode...

On Mon, Oct 18, 2010 at 8:32 AM, Monica Buescu
<monicabuescu1985 at gmail.com> wrote:
> I don't think so.. What I want is to calculate the mode (most frequent
> value) of a raster file for each polygon that this raster covers. What I
> will have is the most frequent raster value that falls inside each polygon.
> Is kind of a univariate statistic of a raster for each polygon.
> Any ideas?
> (thanks Micha for your suggestion)
>
> On Mon, Oct 18, 2010 at 10:19 AM, Micha Silver <micha at arava.co.il> wrote:
>>
>> On 18/10/2010 10:11, Monica Buescu wrote:
>>
>> Greetings
>> I have an image that is divided in several (>300) polygons and, using a
>> data_map raster, I want to calculate the mode value from this image for each
>> polygon. Is it possible? can anyone give me a tip on this?
>>
>> Have a look at v.what.rast. That might be what you're looking for.
>>
>> Thanks
>> Monica
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>>
>> --
>> Micha Silver
>> http://www.surfaces.co.il/
>> Arava Development Co.  +972-52-3665918
>
>
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