[GRASS-dev] How to calculate mean coordinates from big point datasets?
Hamish
hamish_b at yahoo.com
Tue Sep 17 16:04:38 PDT 2013
Markus Neteler wrote:
> I came across this question:
>
> http://gis.stackexchange.com/questions/71734/how-to-calculate-mean-coordinates-from-big-point-datasets
so wants to find the average coordinate?
> 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?
see also the v.points.cog addons script:
http://grasswiki.osgeo.org/wiki/AddOns/GRASS_6#v.points.cog
although I haven't tried it for anything as big as lidar data.
Hamish
More information about the grass-dev
mailing list