Update, v.external uses pseudo-topology, while OGR direct access uses true topology... mmm, so I think that the v.external way could be the right one to develop SF algorithms....
giovanni > 1 - v.external links to data without topology buing built. At the > moment it's only useful for visualizing (but could it be used for SF > algorithms?) > 2 - OGR data sources use "pseudo-topology". Does this refer to the > read/write directly accessed sources? Or is it general? What is the > main difference between pseudo- and real- topology? > > thanks again, > giovanni > > > > 2010/4/6 Martin Landa <[email protected]>: >> [back to ML] >> >> Hi, >> >> 2010/4/6 G. Allegri <[email protected]>: >>> So it's not meant to be used for ogc simple featurer processing (like >>> in qgis or saga). The topo build step is required for processing. I >>> thought it was an option to permit the development/use of >>> not-topological algorithms... >> >> it's question for discussion, currently no SF processing implemented >> in GRASS AFAIK. >> >> Martin >> >> -- >> Martin Landa <landa.martin gmail.com> * http://gama.fsv.cvut.cz/~landa >> _______________________________________________ >> grass-dev mailing list >> [email protected] >> http://lists.osgeo.org/mailman/listinfo/grass-dev >> > _______________________________________________ grass-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-dev
