dhanson@AMSAA-SEER.ARPA (Del Hanson, AWD) (08/18/88)
I am looking for any models which can be used to display digitized terrain data on a 4D/60T. Our IRIS does not have a graphics turbo board, but we may be able to get one if necessary. If anyone knows of a model, please send me a contact name. Thanks. Del Hanson (dhanson@amsaa-seer.arpa)
karsh@trifolium.SGI.COM (Bruce Karsh) (08/19/88)
In article <8808171454.aa08382@AMSAA-SEER.AMSAA-SEER.ARPA> dhanson@AMSAA-SEER.ARPA (Del Hanson, AWD) writes: >I am looking for any models which can be used to display digitized >terrain data on a 4D/60T. Here is a posting from a few months ago from comp.graphics that might be of interest to digital terrain fans: --------------------------------------------------------------------------- From sgi!decwrl!ucbvax!agate!helios.ee.lbl.gov!lll-tis!oodis01!uplherc!utah-gr!utah-cs!crum Wed Jun 1 18:38:09 PDT 1988 Article 2691 of comp.graphics: Path: sgi!decwrl!ucbvax!agate!helios.ee.lbl.gov!lll-tis!oodis01!uplherc!utah-gr!utah-cs!crum >From: crum@utah-cs.UUCP (Gary L. Crum) Newsgroups: comp.graphics Subject: machine-readable maps Summary: Internet archive for digital maps started. Keywords: map cartography USGS DEM Message-ID: <5520@utah-cs.UUCP> Date: 26 May 88 18:14:22 GMT Organization: University of Utah CS Dept Lines: 54 The National Cartographic Information Center (NCIC) distributes digital cartographic/geographic data files produced by the U.S. Geological Survey (USGS) as part of the National Mapping Program. I have purchased one of the maps and I am making it available by anonymous ftp from Internet host wasatch.utah.edu in the directory pub/maps/dem. That directory contains: -rw-r--r-- 1 crum 256 May 26 11:21 INDEX -rw-r--r-- 1 crum 1090600 May 26 10:33 MAP.N0009338 -rw-r--r-- 1 crum 278140 May 26 12:03 MAP.N0009338.Z -rw-r--r-- 1 crum 1481 May 26 11:37 README where MAP.N0009338 is DEM data for the quadrant where I am posting from. Applications of computers to provide dynamic perspective viewing of 3D geographic-scale data models sounds interesting and is becoming practical with the availability of transformation hardware. One such viewing program is a class project of mine this quarter. Please contribute machine-readable geographic data to my collection as suggested by my README file included below. Thanks, -Gary (crum@cs.utah.edu) --- README from ~ftp/pub/maps/dem on wasatch.utah.edu --- This directory contains Digital Elevation Model data as made available by the United States Geological Survey National Mapping Program. The format of DEM map files is described in the publication "Digital Elevation Models, Data Users Guide" available free of charge from: > National Cartographic Information Center > U. S. Geological Survey > 507 National Center > Reston, VA 22092 (703)860-6045 DEM tapes for 7.5 minute square quadrants cost $100 plus a $25 service charge. This data was obtained by Gary Crum at the University of Utah, and it is being made publicly available because it is not copyrighted and in hopes that others who have purchased DEM data will make their data available here. The USGS distribution charge is very high, considering that 100 DEM quads would fit on a single 2400' 6250bpi tape, but such a tape would cost around 100 * $100 = $10,000 plus the $25 per tape service charge. DEM maps in this directory are described in the INDEX file. If you would like to help offset the cost of purchasing map data from USGS, please send a contribution to the corresponding buyers listed in the INDEX file. $5 per map seems reasonable. Thank you. This DEM data is (as of 25-May-1988) available by anonymous ftp from Internet host wasatch.utah.edu in the directory pub/maps/dem. If you can contribute map data, please do by transferring map datafiles to this writable directory and requesting that the INDEX file be updated by the maintainer, crum@wasatch.utah.edu. ---------------------------------------------------------------------------- -- Bruce Karsh karsh@sgi.com Every time I bite my tongue, "Mr. Palomar concludes mentally, "I must think not only of what I am about to say or not say, but also of everything that, whether I say it or do not say it, will be said or not said by me or by others." -- Bruce Karsh karsh@sgi.com Every time I bite my tongue, "Mr. Palomar concludes mentally, "I must think not only of what I am about to say or not say, but also of everything that, whether I say it or do not say it, will be said or not said by me or by others."
phil@BRL.MIL (Phil Dykstra) (10/04/88)
Bruce, Thank you for the info on the FTP'able USGS data. However, if one ftp's to wasatch.utah.edu you find the README: > The digitial map archive on wasatch.utah.edu was discontinued on > 27-Jul-1988 because its maintainer, Gary Crum (crum@wasatch.utah.edu), > left Utah. For information about the current state of his map archive > and possible distribution of the free maps from his current Internet > address, send mail to Gary. Does anyone know of a new location? I sent a note to the given address a month or two ago but never got a response. - Phil