Re: [GRASS-user] Points to area workflow

[Micha Silver]

On 20/07/2019 19:23, Thomas Adams wrote: Rich, How are you seeing that points convert to an area? An area encompassing the points?? In which case you probably want v.hull (https://grass.osgeo.org/grass76/manuals/v.hull.html). One further suggestion, consider changing your variable names for, uh, readability?? Tom On Sat, Jul 20, 2019 at 11:58 AM Rich Shepard <rshep...@appl-ecosys.com> wrote: I don't remember the workflow converting corner points into an area and find no saved example here. When I try the sequence: v.to.lines in=anal_corners out=anal_bnd v.build map=anal_bnd opt=build v.centroids in=anal_bnd out=anal_area grass tells me 'input vector map contains no boundaries'. What have I missed? v.to. lines is *not* what you want. That module takes a polygon and converts the boundaries to lines. If you want to go straight from the point coordinates to a polygon, you can use the GRASS standard ASCII format and pipe directly to v.in.ascii: echo "VERTI: B 1 5 -123.940000 45.150100 -123.940000 45.145400 -123.960000 45.145400 -123.960000 45.150100 -123.940000 45.150100 1 1 C 1 1 -123.950000 45.147500 1 1" | v.in.ascii input=- output=analysis_region format=standard Check the ASCII vector format page: https://grass.osgeo.org/grass77/manuals/vectorascii.html TIA, Rich _______________________________________________ grass-user mailing list grass-user@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/grass-user -- Thomas E Adams, III 1724 Sage Lane Blacksburg, VA 24060 tea...@gmail.com (personal) t...@terrapredictions.org (work) 1 (513) 739-9512 (cell) _______________________________________________ grass-user mailing list grass-user@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/grass-user -- Micha Silver Ben Gurion Univ. Sde Boker, Remote Sensing Lab cell: +972-523-665918

_______________________________________________
grass-user mailing list
grass-user@lists.osgeo.org
https://lists.osgeo.org/mailman/listinfo/grass-user