lines and areas

[Malcolm Williamson]

Stefan,
In v.digit, you can re-type lines to area edges. You can also do this in
bulk by converting to ASCII, using an editor to change all leading "L"s
to "A"s, and re-importing with v.in.ascii. Either way, you'll have to
manually attribute all of the areas in v.digit. Also, I'm really not
sure how robust the GRASS topological model is, especially concerning
multiple levels of nested areas ("islands").

Best regards,
	-Malcolm Williamson
	 CAST - University of Arkansas

> Stefan.Neumann at agrar.uni-giessen.de wrote:
> 
> Hi Grass,
> 
> is there a way to convert lines to areas ? I create lots of
> contour-lines with r.contour and I would like to make statistics
> (r.report type=area) on the areas surrounded by the contour-lines.
> This doesn't work though, because r.contour only creates lines, not
> areas.
> 
> Also I would like to create a map where the areas are filled with a
> color according to their attribute (with v.to.rast). This also only
> seems to work with areas.
> 
> TIA, Stefan