On Wed, December 24, 2008 18:12, Michael Barton wrote: > > > On Dec 24, 2008, at 10:00 AM, <grass-user-requ...@lists.osgeo.org> > <grass-user-requ...@lists.osgeo.org > > wrote: > >> Date: Wed, 24 Dec 2008 08:41:32 +0900 >> From: sgw00...@nifty.com >> Subject: [GRASS-user] <Q>animal's distribution and the altitude >> To: grass-user@lists.osgeo.org >> Message-ID: <jp200812240841323.4027...@nifty.com> >> Content-Type: text/plain; charset=ISO-2022-JP >> >> Dear grass users: >> >> I am a beginner of grass. I wish to express my gratitude for past >> advices. >> >> I am researching relation between animal's distribution and the >> altitude. >> >> Animal's distribution is composed of the point vector data. In a >> word, this is a >> location information. >> >> The altitude data was converted from DEM into the raster data. >> >> The rastere data was divided into ten categories by using reclass >> function. >> >> I want to summarize the frequency distribution of the animal above >> altitude >> level. >> >> However, I do not know the analysis of grass command. >> >> I'll try to itersect with the point vector data and mesh polygon >> converted form >> raster data. >> >> Will this method be appropriate ? > > Add a column for elevation to your vector point attribute table. Use > r.what.rast to put the elevation (or elevation class) directly into > the elevation field of your points table. No need to convert raster to > vector.
Or transform your points to raster and use r.coin or r.report with the two maps. Moritz _______________________________________________ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
