ScottG at horne.com
Thu Mar 21 07:00:00 EST 1996
For $32.00, you can buy the entire U.S. basic DLG data on cd-rom from the
USGS. This is at 1 to 2million scale, but the detail is pretty good. The
projection is Albers Equal Area, but I have had sucesss in importing into a
new mapset with UTM projection. You may have to tweak the projection
some... I am still working with it myself.
Does anyone else know which projection to use in GRASS for proper importing
of the 1:2m scale DLGs?
Data layers are state and county boundaries, hydrography, hypsography, and
You can download it for free at the 1:2m scale from <edcftp.cr.usgs.gov> but
only in SDTS format; which I do not believe GRASS can currently import. You
can also download the entire US at 1:100,000 scale for free in the DLG-3
optional format which GRASS will import nicely. Of course this will take a
while to get the entire state of IL.
scottg at horne.com
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