My problem is a little different. I have just one map, but many layers. I want to get one map, with just one layer.
On Tue, 2008-01-22 at 10:58 +0100, Martin Landa wrote: > Hi, > > 2008/1/22, Neil Godfrey <[EMAIL PROTECTED]>: > > The census 2000 administrative boundaries are shapefiles, where every > > county is a separate file. So v.in.ogr creates a layer for every > > county. So for example, I get 83 layers for the 83 counties in > > Michigan, which correspond to 83 tables, each with just one category. > > > > What I want is one layer with 83 categories. I've had no luck with > > v.overlay, v.extract, v.patch, etc. because all those tools preserve the > > layers in the output map. > > > > Is there any way to do this? > > If the attribute tables have the same structure (number of columns, > data types and key column), you can patch maps using > > v.patch -e in=`g.mlist vect pat='con*' out=con_patch > v.clean in=con_patch out=con_clean tool=snap,break,rmdupl thresh=[value] > > ? > > Martin > _______________________________________________ grass-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-user
