Dave Roberts wrote > After editing a map with wxgui I ended up with 39 areas and 38 > centroids. How do I find and delete the area with no centroid? > > I have tried many combinations of v.info, v.category, v.to.db, and > visualizing with d.vect. If I use v.clean tool=rmarea with slowly > increasing thresholds it gets rid of an area I want before it finds the > one I don't so I don't think it's a sliver. > > GRASS GIS 7.3.svn > v.info demo > . . . > Number of points: 0 Number of centroids: 38 > Number of lines: 0 Number of boundaries: 112 > Number of areas: 39 Number of islands: 19 > . . . > GRASS GIS 7.3.svn > v.category demo op=report > Layer/table: 1/demo > type count min max > point 0 0 0 > line 0 0 0 > boundary 0 0 0 > centroid 38 1 75 > area 0 0 0 > face 0 0 0 > kernel 0 0 0 > all 38 1 75 > > Thanks, Dave > -- > _______________________________________________ > grass-user mailing list
> [email protected] > http://lists.osgeo.org/mailman/listinfo/grass-user d. vect has following option : cat: Display category numbers of features try to display the cat info for the polygones to check where the centroid is missing. have then a look at v.extract and extract only these polygones you need. HTH ----- best regards Helmut -- View this message in context: http://osgeo-org.1560.x6.nabble.com/areas-with-no-centroid-tp5297590p5297591.html Sent from the Grass - Users mailing list archive at Nabble.com. _______________________________________________ grass-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-user
