Hi Nicolas, I do not have a R session handy, but if I remember correctly, the function gUnion() in the rgeos package would do what you want.
Hope this helps, Pierre 2011/5/25 Nicolas Degallier <[email protected]>: > Hi All, > > I have read different shapefiles that are contiguous and that have different > column names with the function "readShapePoly". > > example : > > noumea <- readShapePoly(noumea.file, IDvar = "NOUMEA2_ID", proj4string = > crs_rgnc) > > and > > dumbea <- readShapePoly(dumbea.file, IDvar = "DUMBEA2_", proj4string = > crs_rgnc) > > Now I would like to create a new shapefile with all the polygones in the > "noumea" and "dumbea" spatial polygone data frames. > > I tried : > spRbind(noumea, dumbea) > > I get this message error : > > Error in spRbind(as(obj, "SpatialPolygons"), as(x, "SpatialPolygons")) : > non-unique polygon IDs > > I have tried with the function rbind() > I have tried to set noumea$NOUMEA2_ID and dumbea$DUMBEA2_ with unique values > but I still get the same message error as if the function spRbind was not > using those two columns as polygons ID... > > Does anyone know how I can fix this problem ? > > Thanks a lot > > Nicolas > > > Nicolas Degallier > > IRD UMR182 > Laboratoire d'Océanographie et du Climat, Expérimentation et Approches > Numériques (LOCEAN) > Tour 45-55, 4e ét., case 100, 4 place Jussieu > 75252 Paris Cedex 5 France > tél: (33) 01 44 27 51 57 > fax: (33) 01 44 27 38 05 > > E-mail: <[email protected]> > pdf reprints: > http://www.locean-ipsl.upmc.fr/~ndelod/production/ > > Skype:"xuxaxu" > > _______________________________________________ > R-sig-Geo mailing list > [email protected] > https://stat.ethz.ch/mailman/listinfo/r-sig-geo > -- Scientist Landcare Research, New Zealand _______________________________________________ R-sig-Geo mailing list [email protected] https://stat.ethz.ch/mailman/listinfo/r-sig-geo
