Article: 108659 of sci.geo.satellite-nav
From: gmt@CS.Arizona.EDU (Gregg Townsend)
Newsgroups: comp.infosystems.gis,sci.geo.satellite-nav
Subject: Announcement: Unix viewer for USGS DLG files
Date: 1 Aug 2000 14:54:51 -0700
Organization: University of Arizona CS Department, Tucson AZ
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The USGS distributes digitized topographic maps in both raster and vector
form.  The vector maps -- "Digital Line Graphs", or DLGs -- are encoded
as SDTS files.  The USGS distributes a viewer for these files, dlgv32,
but it runs only on Microsoft Windows.

Dlgvu is a new DLG viewer that runs under Unix.  It is written in the Icon
programming language and is available for free downloading.  Arbitrary paths,
such as GPS track logs, can be plotted atop the displayed maps.  For more
information, including screenshots, see
	
        http://www.cs.arizona.edu/icon/oddsends/dlgvu/

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   Gregg Townsend         Staff Scientist      The University of Arizona
   gmt@cs.arizona.edu     Computer Science     Tucson, Arizona, USA