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'Oc?anographie et du Climat, Exp?rimentation et Approches Num?riques (LOCEAN)
Tour 45-55, 4e ?t., case 100, 4 place Jussieu
75252 ?Paris Cedex 5 ?France
t?l: (33) 01 44 27 51 57
fax: (33) 01 44 27 38 05
E-mail: <Nicolas.Degallier at ird.fr>
pdf reprints:
http://www.locean-ipsl.upmc.fr/~ndelod/production/
Skype:"xuxaxu"