Bernd, there is no v.in.ogr, because it is used *always* when you use a vector layer with SEXTANTE and GRASS, to import the layer into GRASS, and then produce a result.
Maybe a wrapper of v.in.ogr can be added, to do just import (which includes cleaning), and then export the cleaned layer. Would that make sense to you? Thanks for your help! 2013/4/30 Bernd Vogelgesang <bernd.vogelges...@gmx.de>: > Hi, > don't know if i understand the matter correctly, but what i extracted from > Stefans initial question is, that there is no v.in.ogr accessible in > Sextante, and therefore no advanced options for snapping and minimum areas > to import from e.g. shape files. > Especially for badly digitized polygon layers, this one-time import into > GRASS with the advanced options cures almost all errors for me in 99% of the > cases. > > v.clean.snap, as it was suggested by Paolo, is no alternative for that, > cause snap seems not to handly polygons but only lines! ("snap: snap lines > to vertex in threshold" from grass manual). > So, i never found an easy way for topologically cleaning polygon layers > through other v.clean functions as easy as with v.in.ogr, but as long as > it's not accessible in Sextante, i still have to manually import it in GRASS > (with all the mapset and location hokuspokus, most people do not understand) > > Maybe i'm completely on the wrong track. In this case: Please direct me ;) > > Cheers > Bernd > > Am 30.04.2013, 17:02 Uhr, schrieb Paolo Cavallini <cavall...@faunalia.it>: > > >> -----BEGIN PGP SIGNED MESSAGE----- >> Hash: SHA1 >> >> Il 30/04/2013 13:46, SBL ha scritto: >> >>> What I did not understand completely was: Do you mean that the default >>> settings of v.in.ogr are being used (snapping disabled and min_area set >>> to >>> 0.0001) or is the topology cleaning completely disabled in the >>> v.in.ogr-part >>> of Sextante? >> >> >> The first one. >> >>> So maybe importing and exporting to and from GRASS could be used to >>> perform >>> a quick, simple and beginner-friendly "lightweight-cleaning"? >> >> >> You can use v.clean for this >> >>> I see this also as a solution for Bug #2921 >>> <http://hub.qgis.org/issues/2921> , which furthermore offers additional >>> quality checks... >>> Actually, before I learned about the possibility in Sextante I considered >>> creating a plugin for that... >> >> >> Never reinvent the wheel; but you're always welcome to come and help >> improving >> Sextante, e.g. adding unit tests - it's easy, Victor can explain how. >> All the best. >> - -- >> Paolo Cavallini - Faunalia >> www.faunalia.eu >> Full contact details at www.faunalia.eu/pc >> Nuovi corsi QGIS e PostGIS: http://www.faunalia.it/calendario >> -----BEGIN PGP SIGNATURE----- >> Version: GnuPG v1.4.12 (GNU/Linux) >> Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ >> >> iEYEARECAAYFAlF/3O4ACgkQ/NedwLUzIr57KgCdF+C/G4I8AYQzlkc9900s7LGW >> jf0AoKi1h6ZH2d0KW/3PGSioNRhOeim+ >> =hKB4 >> -----END PGP SIGNATURE----- >> _______________________________________________ >> Qgis-user mailing list >> Qgis-user@lists.osgeo.org >> http://lists.osgeo.org/mailman/listinfo/qgis-user > > > > -- > Bernd Vogelgesang * Siedlerstrasse 2 * 91083 Baiersdorf * +49-9133-825374 > > _______________________________________________ > Qgis-user mailing list > Qgis-user@lists.osgeo.org > http://lists.osgeo.org/mailman/listinfo/qgis-user _______________________________________________ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user