[GRASS-dev] How to calculate mean coordinates from big point datasets?

Moritz Lennert mlennert at club.worldonline.be
Mon Sep 23 07:11:04 PDT 2013

On 22/09/13 17:06, Markus Metz wrote:
> Markus Neteler wrote:
>> Hi,
>> I came across this question:
>> http://gis.stackexchange.com/questions/71734/how-to-calculate-mean-coordinates-from-big-point-datasets
> Please try the new addon v.centerpoint [0]. It calculates various
> center points for point clouds, lines, and areas. Standard options are
> the geometric mean (center of gravity) and geometric median (more
> robust for outliers). There are additional options to calculate center
> points for points, lines and areas, explained in the manual. The
> geometric medians (points of minimum distance to all other points) are
> approximations, but fairly accurate and very fast. I would be
> surprised if any other GIS software can calculate these center points.

Thanks a lot ! This is a very nice addition and should be part of core 
grass, IMHO.


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