[GRASSLIST:2998] newbie question re merging DLG data
Emile Snyder
esnyder at whitesalmon.net
Fri Jan 25 16:03:38 EST 2002
Hello all,
I am a newcomer to GIS and GRASS, and have recently started playing with
it by working through the GRASS Seeds tutorial and looking at some of the
online course notes. I have downloaded 1:24000 scale USGS DEM and DLG
data for the 4 regions around where I live and have been experimenting
with those files. As my house sits almost at the junction of the 4
regions, I have been trying to figure out how to get all the data put
together in one location database. I imported the DEM data with r.in.gdal
and created a full DEM layer using r.patch on the subregions. By analogy,
I tried to create, for example, a full vector roads layer out of the 4
road layers from the DLGs (imported with v.in.sdts) using v.patch, but the
boundaries of the original regions show up in the vect. So, my question:
How do I merge the different vector maps for the 4 regions while getting
rid of the original region boundaries?
thanks,
-emile
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