Hi, A couple options:
1. convert lines to points and use v.kernel or v.neighbors 2. import lines into R, and use the density function from the spatstat package. Then, sample the density rasters within your polygon of interest with v.rast.stats, etc. Cheers, Dylan On Wed, May 26, 2010 at 1:30 AM, maning sambale <[email protected]> wrote: > Hi, > > I have two vectors in GRASS: > road network - line > grid - polygon > > I want to compute road density and append the attributes to the grid poly. > In QGIS I tried using the vector tools (sum line length) with > shapefiles and it works for small areas bu not for my full region. > Any ideas? > > -- > cheers, > maning > ------------------------------------------------------ > "Freedom is still the most radical idea of all" -N.Branden > wiki: http://esambale.wikispaces.com/ > blog: http://epsg4253.wordpress.com/ > ------------------------------------------------------ > _______________________________________________ > grass-user mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/grass-user > _______________________________________________ grass-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-user
