George,
you could also use v.rast.stats to compute
pollution statistics for the administrative
areas. See [1] for more details.
Daniel.
[1] http://grass.itc.it/gdp/html_grass63/v.rast.stats.html
Moritz Lennert wrote:
On 02/08/07 06:59, David Finlayson wrote:
Forgot to CC grass list
On 8/1/07, David Finlayson <[EMAIL PROTECTED]> wrote:
I think you want the command r.statistics. You will need to convert
your administrative areas vector map into a raster map where each area
has a unique ID. Then run r.statistics on the pollution map using the
administrative areas raster as the cover. This tool builds a database
table with the min,max avg, etc statistics of pollution for each area
id.
How difficult would it be to create a module 'v.statistics' which
would skip the step of converting the cover to raster ?
Moritz
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