On Wednesday, October 29, 2003, at 10:01 PM, John Gillette wrote:
v.type input=map_in output=map_out type=line,boundary
John
John,
Thanks for the advice. I thought about this and almost tried it but did not. The reason is that GRASS considers my closed polygon object to be a boundary, but not an area. I want a filled area, not just the boundary of an area. v.type does not have an option to make a boundary an area.
How do I make this polygon an area? In GRASS 5.0.x, I assign it a centroid and ID number in v.digit. This doesn't seem to be an option in GRASS 5.7. At least when I place a centroid inside the boundary polygon it doesn't link up with the aforesaid polygon as far as I can tell. It just sits there as an independent centroid, unassociated with a boundary (generating an error to that effect when I run v.build).
____________________
C. Michael Barton, Professor
Department of Anthropology
PO Box 872402
Arizona State University
Tempe, AZ 85287-2402
USA
Phone: 480-965-6262
Fax: 480-965-7671