thinning algorithms in GRASS

Wendelin Reich wreich at gwdg.de
Sun Sep 24 10:07:00 EDT 1995


On Tue, 19 Sep 1995, Gillian Bowser wrote:

> I am curious about the accuracy/precision of translating raster files to vector
> files. I am creating paths from point A to B and I need to know the length of
> the path followed between those points.  The paths are being generated by
> building first a cost surface, then draining (r.drain) that surface.

Sounds interesting... can you tell me how you _generate_ the cost 
surface? Are there any helpful tools in GRASS?

Thanx in advance, Wendelin



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