Re: [GRASS-user] grass gis equivalent of st_subdivide
Hi, Moritz Lennert schrieb am Do., 14. Okt. 2021, 02:28: > Hi HB, > > Le 13 octobre 2021 22:57:21 GMT+01:00, B H a > écrit : > >Hi, > >How do I divide an area into smaller areas ( I am looking for > functionality > >of st_subdivide in postgis). > >I need to split some big areas into smaller ones (and all smaller ones > >should have the same attributes). > >I understand that it means that underlying topology would change( It would > >add more boundaries). > > > >When v.in.ogr imports a shapefile in Grass GIS, it automatically splits > the > >overlapping areas to make them topologically correct, so I am hoping that > >there is already some way to just split a topologically valid area as > >well... > > > I don't think that there is any readymade module for this. You could just > create a fixed grid with v.mkgrid and v.overlay it with something like this: > > v.overlay ain=orig bin=grid out=subdivided operator=and olayer=0,1,0 > Another option to try may be this one: https://grass.osgeo.org/grass-stable/manuals/v.voronoi.html#skeletons-and-center-lines-of-areas Markus ___ grass-user mailing list grass-user@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] grass gis equivalent of st_subdivide
Hi HB, Le 13 octobre 2021 22:57:21 GMT+01:00, B H a écrit : >Hi, >How do I divide an area into smaller areas ( I am looking for functionality >of st_subdivide in postgis). >I need to split some big areas into smaller ones (and all smaller ones >should have the same attributes). >I understand that it means that underlying topology would change( It would >add more boundaries). > >When v.in.ogr imports a shapefile in Grass GIS, it automatically splits the >overlapping areas to make them topologically correct, so I am hoping that >there is already some way to just split a topologically valid area as >well... I don't think that there is any readymade module for this. You could just create a fixed grid with v.mkgrid and v.overlay it with something like this: v.overlay ain=orig bin=grid out=subdivided operator=and olayer=0,1,0 Moritz ___ grass-user mailing list grass-user@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/grass-user
[GRASS-user] grass gis equivalent of st_subdivide
Hi, How do I divide an area into smaller areas ( I am looking for functionality of st_subdivide in postgis). I need to split some big areas into smaller ones (and all smaller ones should have the same attributes). I understand that it means that underlying topology would change( It would add more boundaries). When v.in.ogr imports a shapefile in Grass GIS, it automatically splits the overlapping areas to make them topologically correct, so I am hoping that there is already some way to just split a topologically valid area as well... Best, HB ___ grass-user mailing list grass-user@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/grass-user
