Convert lines to areas

From GRASS-Wiki
Revision as of 17:23, 29 December 2011 by Neteler (talk | contribs) (→‎See also)
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to navigation Jump to search
The printable version is no longer supported and may have rendering errors. Please update your browser bookmarks and please use the default browser print function instead.

Q: Is there a way to construct a vector polygon map from closed line rings?

A: Yes, to convert a lines map into an area map, do:

Requirement: the line rings must be closed.

  • run v.type to convert from line type to boundary type
  • run v.centroids to add missing centroids to closed boundaries


 v.type input=map_l output=map_b type=line,boundary
 v.centroids input=map_b output=map_polygons

See also