I would rather rasterize at different grain size the same vector layer and then vectorize it. Just using g.region, v.to.rast, and r.to.vect respectively
Best On Mon, Jun 16, 2008 at 10:10 AM, Jonathan Aguero-Valverde <[EMAIL PROTECTED]> wrote: > Martin, > I think using vectors and some scripting will be the way to go here. > > A simple script should be something like this: > 1. create a new polygon vector with v.edit > 2. for each point in your points vector get the x and y coords (v.to.db or > maybe v.report) > 3. calculate the vertices of your polygon based on the x and y coords. > 4. Add new feature with v.edit > 5. add vertices to feature with v.edit. > 6. repeat for each point in points vector layer. > > You can also use postgres/postgis functions and create the layer in > postgis, you won't need a script but you have to learn some about postgis. > > Hope this helps. > > Jonathan Aguero-Valverde > PhD. Candidate > The Thomas D. Larson > Pennsylvania Transportation Institute > The Pennsylvania State University > > ----- Original Message ----- From: "Martin Wegmann" < > [EMAIL PROTECTED]> > To: <[email protected]> > Sent: Monday, June 16, 2008 10:18 AM > Subject: [GRASS-user] square buffeer > > > > Hello, >> >> I am looking for a way to create a square buffer for a point vector so >> that >> each point is in the end the centroid of a square with defined side >> length. >> >> I though about r.mapcalc statements to grow north-south and west-east and >> then >> somehow create an area from this square. But I have no idea how to do it >> without a lot of hand-work. >> >> Any idea how to achieve that? Or hints where to find relevant documents. >> >> Martin >> >> _______________________________________________ >> 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 > -- Pedro Camilo Alcántara Concepción Department of Forest and Wildlife Ecology Rm. 120 Russell Labs 1630 Linden Dr. Madison WI 53706-1598 Phone +1/608/265-9219 http:/silvis.forest.wisc.edu ___________________________________________
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