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

Luca Delucchi lucadeluge at gmail.com
Wed Sep 18 01:51:36 PDT 2013


On 17 September 2013 22:10, Markus Neteler <neteler at osgeo.org> wrote:
> Hi,
>
> I came across this question:
>
> http://gis.stackexchange.com/questions/71734/how-to-calculate-mean-coordinates-from-big-point-datasets
>
> and wondered if this approach would be the fasted:
>
> # http://grass.osgeo.org/sampledata/north_carolina/points.las
> v.in.lidar input=points.las output=lidarpoints -o
> ...
> Number of points: 1287775
> ...
>
> Now I would use
> v.univar -d lidarpoints type=point
>
> (still calculating here...)
>
> Is it the best way?
>

maybe v.median [0] could help?

> Markus

[1] http://trac.osgeo.org/grass/browser/grass-addons/grass7/vector/v.median

-- 
ciao
Luca

http://gis.cri.fmach.it/delucchi/
www.lucadelu.org


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