Hi Sab,
v.stats _IS_ very slow (for many primitives).
Maybe you could analyse the database, where you can calculate the
statistics you like. For spatial statistics you can analyse uploaded
coordinates of centroids or sizes of area.
Hope it helps a bit,
Achim
Am 26.11.2010 12:32, schrieb razmjoo...@faunalia.co.uk:
Dear list
I am trying to run v.rast.stats for a large vector file. It contains
around 700000 buildings representing buildings.
here is my g.region info
g.region -p
projection: 99 (Transverse Mercator)
zone: 0
datum: osgb36
ellipsoid: airy
north: 183010.45829976
south: 153516.19024768
west: 513122.49174945
east: 555953.95182415
nsres: 4.99987592
ewres: 5.00017045
rows: 5899
cols: 8566
cells: 50530834
THe problem I am having is the process is extremely slow. It has done 150
features out of 700000 areas after 2 hours.
I need just the average raster value within each building (feature).
My questions are:
- Is there something I can do to speed up the process?
- Is there a way just to get the average value rather than the whole set
of statistical parameters (I am not even using -e option)
Any advice on that is highly appreciated.
Regards
Sab
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