Hi all, I'm having trouble creating a single, dissolved feature and exporting it as a multipolygon. Here is what I've done:
- layer I started with: > v.info -t global_mask nodes=5448 points=0 lines=0 boundaries=2727 centroids=2723 areas=2723 islands=2721 faces=0 kernels=0 primitives=5450 map3d=0 - added dissolve field: > v.db.addcol global_mask col="diss int" > v.db.update global_mask col=diss value=1 - check that diss field is there: > v.info -c global_mask Displaying column types/names for database connection of layer 1: INTEGER|cat DOUBLE PRECISION|cat_ INTEGER|diss - dissolve: v.dissolve global_mask out=new_mask col=diss --o - inspect new layer: > v.info -t new_mask nodes=5448 points=0 lines=0 boundaries=2727 centroids=2723 areas=2723 islands=2721 faces=0 kernels=0 primitives=5450 map3d=0 - export layer as shapefile: > v.out.ogr -p input=new_mask type=area dsn=/tmp olayer=new_mask - check new shapefile: ogrinfo -summary /tmp new_mask INFO: Open of `/tmp' using driver `ESRI Shapefile' successful. Layer name: new_mask Geometry: Polygon Feature Count: 2723 Extent: (-180.000000, -90.000000) - (180.000000, 83.623596) Layer SRS WKT: GEOGCS["GCS_WGS_1984", DATUM["WGS_1984", SPHEROID["WGS_1984",6378137,298.257223563]], PRIMEM["Greenwich",0], UNIT["Degree",0.017453292519943295]] cat: Real (11.0) As you can see, I still have 2723 features, when I expect to have 1. What am I doing wrong? Roger _______________________________________________ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user