[gdal-dev] How to overlay a raster with shapes to calc statistics?

[Petteri Packalen]

Andreas,

Look at:

   http://starspan.projects.atlas.ca.gov

Starspan is a command line tool that uses GDAL/OGR lib. This functionality 
is also available in many GIS packages with the name 'zonal statistics'.

--
Best regards,
Petteri Packalen

**********************************************************************
Petteri Packalén
Visiting Research Scientist
Department of Forest Engineering, Resources and Management
College of Forestry, Oregon State University
204 Peavy Hall, Corvallis, OR 97331-5704, USA
Office: Peavy 111
E-mail: Petteri.Packalen at uef.fi
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On Sun, 18 Mar 2012, Andreas H. wrote:

> Hi all,
>
> I have a GeoTiff file covering the whole globe at approx. 1km
> resolution. And I have a shapefile containing say 20 of polygons.
>
> For each of the 20 polygons, I want to know the mean value of the raster
> data falling inside the polygon, and possibly more statistics (max, min,
> medeian, std, ...).
>
> How can I achieve this using GDAL?
>
> Thanks for your insight,
> Andreas.
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