Hi to everybody.
Is there in grass a command or script to compute the lenght of thinned
raster lines considering the different lenght of the diagonal cells?
Many thanks in advance
Aldo Clerici
Dipart. Scienze della Terra
Università di Parma
Italy
On Mon, May 07, 2001 at 05:20:00PM +0200, Aldo Clerici wrote:
Hi to everybody.
Is there in grass a command or script to compute the lenght of thinned
raster lines considering the different lenght of the diagonal cells?
Many thanks in advance
Aldo Clerici
A possible way might be to use
r.line
on that raster lines. As r.line (currently) doesn't have a smooth function,
it might be a good idea to use v,support, v.digit afterwards. In v.digit you
find in EDIT-> v - Smooth poly-line a way to "smooth" the line.
Maybe also v.prune would do the job.
Finally v.report tells you the line lenght.
Hope this helps,
Markus
PS: It might be a good idea to have a new flag in r.line to create diagonal
lines optionally instead of digitizing the cell borders.