Hi, i transformed my lines into boundaries (v.type) and added than centroids (v.centroids) to make areas out of them.
GRASS 6.4.0RC5+39438 (BMN):~ > v.type input=FNF output=FNFType type=line,boundary --overwrite WARNING: Vector map <FNFType> already exists and will be overwritten Building topology for vector map <FNFType>... Registering primitives... 597 primitives registered 1035130 vertices registered Building areas... 100% 597 areas built 597 isles built Attaching islands... 100% Attaching centroids... 100% Number of nodes: 597 Number of primitives: 597 Number of points: 0 Number of lines: 0 Number of boundaries: 597 Number of centroids: 0 Number of areas: 597 Number of isles: 597 Number of areas without centroid: 597 GRASS 6.4.0RC5+39438 (BMN):~ > v.centroids input=FNFType output=FNFTypeCent Processing features... 597 new centroids placed in output map Copying attribute table(s)... Building topology for vector map <FNFTypeCent>... Registering primitives... 1194 primitives registered 1035727 vertices registered Building areas... 100% 597 areas built 597 isles built Attaching islands... 100% Attaching centroids... 100% Number of nodes: 1194 Number of primitives: 1194 Number of points: 0 Number of lines: 0 Number of boundaries: 597 Number of centroids: 597 Number of areas: 597 Number of isles: 597 Number of duplicate centroids: 116 Number of areas without centroid: 116 v.category complete. 597 features modified. The output says that to 116 areas a centroid can't be added. Thus i controlled with v.digit, if the boundaries are closed: http://osgeo-org.1803224.n2.nabble.com/file/n5783822/Screenshot-v.digit_-_FNF%40PERMANENT.png How you can see, there are just green crosses, that means that every boundary should be closed? Or not? But why then there are 116 areas without centroid after runnig v.centroids? Thanks for any help in advance! cheers, pipppoo -- View this message in context: http://osgeo-org.1803224.n2.nabble.com/Closed-Areas-tp5783822p5783822.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
