Hi GRASS List, I have what I think is a large shapefile. It is 122 MB (30 MB dbf file and 90 MB shp file). v.import also reports:
47957 primitives registered 3761520 vertices registered and then, much later Number of nodes: 33786 Number of primitives: 51112 Number of points: 0 Number of lines: 0 Number of boundaries: 37935 Number of centroids: 13177 Number of areas: 31681 Number of isles: 27720 WARNING: Number of incorrect boundaries: 1586 WARNING: Number of centroids outside area: 186 WARNING: Number of duplicate centroids: 631 When I open it in QGIS it takes ~1 second and everything looks good. If I reproject it on-the-fly, it still looks good. I'm working in EPSG:3413 and gdalsrsinfo reports "PROJ.4 : '+proj=longlat +datum=WGS84 +no_defs '" for this shapefile. When I v.import it in GRASS, it takes ~2 hours, and there are many boundaries that appear incorrect. If I set "snap=-1" it only takes a few minutes, but there are more errors. Can anyone offer advice how do work with this shapefile in GRASS? Is this likely an error in the shapefile, or a limitation to v.import? Should I import it into its native projection and then v.proj after import? Thanks, -k. _______________________________________________ grass-user mailing list [email protected] https://lists.osgeo.org/mailman/listinfo/grass-user
