Thanks for the reply Martin. I thought it might have something to do with the category values.
I know it is easier said than done, but isn't there a way one can skip the category merger part? Or can I merge all the lines into a single category? My system doesn't require the use of category values. I would like to automate the process. At the moment I have a raster image with some lines in them. I convert these to a vector layer, clean it up a bit and output it to svg. Regards, Andre On Nov 20, 2007 2:03 PM, Martin Landa <[EMAIL PROTECTED]> wrote: > Hi, > > 2007/11/20, Andre Hauptfleisch <[EMAIL PROTECTED]>: > > Good day, > > > > I used the v.clean approach to snap some vectors to each other. This > caused > > a number of vectors to lie on the same line. The rmdupl option does not > seem > > to remove these short segments. > > > > Any ideas on how I can get rid of them? Or perhaps I'm just using > v.clean > > wrong. Here is the command: > > > > v.clean [EMAIL PROTECTED] output=scene01_clean type=line > > tool=snap,rmdupl,rmsa thresh=15 --overwrite > > rmdupl removes only *identical* features, for example > > L 2 1 > 594233.1875 4921026.59375 > 596956.11875847 4921515.74307787 > 1 1 > L 2 1 > 596956.11875847 4921515.74307787 > 599775.5 4922022.21875 > 1 2 > L 2 1 > 594233.1875 4921026.59375 > 599775.5 4922022.21875 > 1 3 > L 2 1 > 595793 4918172.46875 > 603426.125 4919400.40625 > 1 4 > L 2 1 > 595793 4918172.46875 > 603426.125 4919400.40625 > 1 5 > > after rmdupl > > L 2 1 > 594233.1875 4921026.59375 > 596956.11875847 4921515.74307787 > 1 1 > L 2 1 > 596956.11875847 4921515.74307787 > 599775.5 4922022.21875 > 1 2 > L 2 1 > 594233.1875 4921026.59375 > 599775.5 4922022.21875 > 1 3 > L 2 2 > 595793 4918172.46875 > 603426.125 4919400.40625 > 1 5 > 1 4 > > First two lines 'lie' on the third one, but they are not identical, if > you want to remove them, you need to merge them first. E.g. > > v.edit dupl1 tool=merge cat=1,2 > > remove vertex from line > > v.generalize in=dupl1 out=dupl2 > > and then run v.clean. > > The result is > > L 2 3 > 594233.1875 4921026.59375 > 599775.5 4922022.21875 > 1 1 > 1 2 > 1 3 > L 2 2 > 595793 4918172.46875 > 603426.125 4919400.40625 > 1 5 > 1 4 > > Martin > > > Thanks! > > > > -- > > Groete, > > Andre Hauptfleisch > > > > M: 082 5722 469 > > F: 086 687 1106 > > E: [EMAIL PROTECTED] > > _______________________________________________ > > grass-user mailing list > > [email protected] > > http://lists.osgeo.org/mailman/listinfo/grass-user > > > > > > > -- > Martin Landa <[EMAIL PROTECTED]> * > http://gama.fsv.cvut.cz/~landa<http://gama.fsv.cvut.cz/%7Elanda>* > -- Groete, Andre Hauptfleisch M: 082 5722 469 F: 086 687 1106 E: [EMAIL PROTECTED]
_______________________________________________ grass-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-user
