[GRASS-user] v.rast.stats over a large vector file

[razmjooeis at 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