--- Begin Forwarded Message ---
Date: Tue, 01 Dec 1998 17:00:25 -0500
From: Tsering Wangyal Shawa <[log in to unmask]>
Subject: Re: Topographic Maps <fwd>
 
 
What sort of topographic information person needs. If a person need
elevation info s/he can download DEM data from usgs web
page(http://edcwww.cr.usgs.gov/doc/edchome/ndcdb/ndcdb.html). Of course,
all of the DEM 1:24,000 data are in sdts format. I hate this format(but
there are free translator which you can download from above web site).
Anyway, the sdts data can be converted into grid or ascii format then
person could bring them in ArcView Spatial Analyst or Arc/Info GRID Module.
You can either view them as DEM in a grid format or convert them into
contour lines. You could create similar contour interval as topo sheet to
get same contour line as USGS 1:24,000 Topo sheets.
Besides, DEM data-- there are DLG data where you get info about boundary,
hydrology, hypsography,
transportation etc. All of the above data are free.
 
Tsering Wangyal Shawa
Geographic Information Systems Librarian
Digital Map and Geospatial Information Center
Geosciences and Map Library
Guyot Hall
Princeton University
Princeton, NJ 08544
Tel: (609) 258-3247
Fax: (609) 258-1274
http://www.princeton.edu/~geolib/gis
 
>--- Begin Forwarded Message ---
>Date: Mon, 30 Nov 1998 13:32:02 -0600 (CST)
>From: Doralyn H Edwards <[log in to unmask]>
>Subject: Topographic Maps
>
>
>This may be a very naive question, but I'm not sure where else to go at
>this point.  I have a patron who is looking for Topographic maps of the
>Crystal Crag, Bloody Mountain, and Mammoth Mountain regions in
>California at the 1:24,000 scale in a digital format.  From my searching
>on the web, it doesn't appear that many topos are available on the web.
>Does anyone know of a place I can get this on the web for free--otherwise,
>we'll just scan them here (I'd rather not purchase them from a vendor,
>unless reasonably priced).
>
>Thanks--I'm new at this and I'm not sure where else to go with the
>question.
>
>Doralyn
>
>************************************************************
>Doralyn H. Edwards     phone: (713)737-5691
>GIS/Data Librarian     fax:   (713)285-5902
>Fondren Library        email: [log in to unmask]
>Rice University        work: http://www.rice.edu/Fondren/GDC
>Houston, TX            personal: http://is.rice.edu/~doralyn
>************************************************************
>
>
>
>
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>
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