Another approach is to use a tool called Starspan. It works with any GDAL/OGR datasource - including GRASS raster and vector files.
cheers, Dylan On Thursday 02 August 2007 02:21, George MacKerron wrote: > Many thanks to you both. > > v.rast.stats looks perfect -- it's churning away as I write... > > G > > On 2 Aug 2007, at 09:52, Daniel McInerney wrote: > > 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 > >> > >> _______________________________________________ > >> grassuser mailing list > >> [email protected] > >> http://grass.itc.it/mailman/listinfo/grassuser > > -- > George MacKerron / 020 7870 7509 _______________________________________________ grassuser mailing list [email protected] http://grass.itc.it/mailman/listinfo/grassuser
