Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!usc!cs.utexas.edu!uunet!isis!scicom!rcw
From: rcw@scicom.AlphaCDC.COM (Robert White)
Newsgroups: comp.graphics
Subject: Re: WANTED: maps
Message-ID: <11225@scicom.AlphaCDC.COM>
Date: 29 Mar 91 06:35:59 GMT
References: <1991Mar18.201747.23217@cec1.wustl.edu> <91079.190330UH2@psuvm.psu.edu> <1991Mar22.155204.26170@tfic.bc.ca>
Organization: The WhiteStar Corporation
Lines: 42

In article <1991Mar22.155204.26170@tfic.bc.ca> clh@tacitus.UUCP (Chris Hermansen) writes:
>
>Try your local USGS office; you can get 7.5" x 7.5" digital maps from them
>in an ASCII format called DLG-3 that's pretty easy to sort out.  It even
>contains some spatial relationship information (called topology in the
>industry), and attributes.

The coverage of these is spotty at best.  You can get an Index map
showing the availability of the 1:24,000 scale from your local USGS
office.

There is another USGS DLG-3 database, the 1:100,000 scale DLG files which
are complete with respect to nationwide coverage.  File sets include
hydrography, roads, railroads, and and miscellaneous transportation 
(airports, pipelines, transmission lines).

These files are still
detailed enough for a lot of projects.  Caveat:  Both databases come
from the USGS on 9 track tape only (6250 or 1600 bpi).  We got a roomful 
of tapes that we had to download.

>Also, ESRI in Redlands is working on the Digital Map of the World Project
>(don't know the originating agency) but it is supposed to be released 
>fairly soon on CD-ROM, I believe.

Not sure who is behind the effort either, but I hear the project is going
somewhat slower than expected.

>Chris Hermansen                         Timberline Forest Inventory Consultants
>Voice: 1 604 733 0731                   302 - 958 West 8th Avenue
>FAX:   1 604 733 0634                   Vancouver B.C. CANADA
>clh@tfic.bc.ca                          V5Z 1E5

Chris -
What's available digitally for Canada or other countries, and how do you
get it?


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