I have a data source (a US state) whose GIS data files in .gdb format lack clean topology. v.in.ogr reports (for one example) that 29671 polygons overlap and suggests re-importing starting with snap=1e-09. I end up re-running v.in.ogr through snap=0.1 without completely fixing all overlaps and other errors. One question is: how many times should I re-run v.in.ogr with different smap tolerances if the data are not fixed?
Next I run v.clean using snap as the tool and 1 as the threshold. For many of these files this does not fix all the errors. While I can use v.build to see the errors I would like to better understand the work flow for removing all errors that occur when importing with v.in.ogr. How can I most quickly generate fully topologically clean output? TIA, Rich _______________________________________________ grass-user mailing list [email protected] https://lists.osgeo.org/mailman/listinfo/grass-user
