The ET GeoWizard toolbox for ArcView puts geometry columns in a new shapefile... certainly safier!
Le vendredi 13 mars 2009 à 11:05 +0200, Micha Silver a écrit : > Carson Farmer wrote: > > > T, > > > > To get the column length, you can use the export/add geometry function > > in fTools, which will create a copy of the dataset (as a shapefile) > > with an additional length field (or it will populated the length field > > if it already exists). From this you can use the compute basic > > statistics function to get the sum of the field... > > > Any chance to alter the fTools plugin so that the geometry functions > stick the new columns straight into the original shapefile? I can't > think of any situation where you'd need to keep both the original shape > without the geometry attribute and the new one with. > Other GIS software (i.e. GRASS as John Tull pointed out, as well as > Arc*) just add the length/perimeter, X-Y or area column into the > existing vector layer. > > A minor annoyance, but it would be nice... > Thanks, > Micha > > Hopefully that's what you are looking for? > > > > Carson > >> > >> > >> HI everybody > >> i hope someone can help me with this: > >> in a poly-line vector layer, which is obviously built of several > >> festures, how can i add a column of LENGTH to the attribute table? > >> then how can i SUM all of it? > >> > >> THNX > >> T > >> ------------------------------------------------------------------------ > >> > >> _______________________________________________ > >> Qgis-user mailing list > >> [email protected] > >> http://lists.osgeo.org/mailman/listinfo/qgis-user > >> > > > > > > _______________________________________________ > Qgis-user mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/qgis-user > -- Lionel Roubeyrie chargé d'études LIMAIR - La Surveillance de l'Air en Limousin http://www.limair.asso.fr _______________________________________________ Qgis-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/qgis-user
