[GRASS-user] Problems with r.thin and sharp corners
JRadinger at gmx.at
Thu Jan 27 08:14:14 EST 2011
I transformed a river from a polyline into a raster grid of 10x10 m (with v.to.rast). After that I tried to thin the raster-line with r.thin, but there are problems with sharp corners, as now sometimes a cell has three neighbors but should have only 2 for my further calculations.
I attached a screenshot that you can see what I mean.
How can I get that a cell has in a normal case only two neighbors except a tributary of the river is joining the main river (junction). Now the raster looks like a tributary (1 cell long) is joining the main river, but its just an artefact of the corner.
Neu: GMX De-Mail - Einfach wie E-Mail, sicher wie ein Brief!
Jetzt De-Mail-Adresse reservieren: http://portal.gmx.net/de/go/demail
-------------- next part --------------
A non-text attachment was scrubbed...
Size: 20565 bytes
Desc: not available
Url : http://lists.osgeo.org/pipermail/grass-user/attachments/20110127/f2275934/River_corner-0001.jpe
More information about the grass-user