HDTenEightyP/NetNews huggingface dataset:
From: louis@well.sf.ca.us (Louis Jaffe)
Subject: Arcplot 6.1 Surfacedrape Problem
Summary: unwanted fill overlap with edge of neighboring polys
Keywords: arc arcplot surfacedrape
Organization: Whole Earth 'Lectronic Link
Date: Mon, 25 Jan 1993 16:50:04 GMT

In Arc 6.1 Arcplot, I am using SURFACEDRAPE POLYS <covername> to drape filled
polygons representing land-use areas over a terrain model.  The surface, derived
from USGS DEM data, is a LATTICE generated by DEMLATTICE.   Projection of both
the coverage and the surface is geographic (lat/lon).  

Problem:  The fills in the draped polygons are spreading so that they slightly
overlap the fills at the edges of neighboring polygons.  Yet polygon topology 
checks out normal.  What's going on?

Thanks for any help.  -LJ


Newsgroups: comp.infosystems.gis
From: comptec91001@camins.camosun.bc.ca
Subject: Image Processing: context filtering.
Keywords: Context filtering
Organization: Camosun College
Date: Sat, 23 Jan 1993 05:54:24 GMT

I am looking for algorithms for image processing (LANDSAT etc.). 
In particular, I am looking for context filtering algorithms and
information on image masking for selected classifications.

Thank you in advance for assisting me in my search.

email: COMPTEC91001@CAMINS.camosun.BC.ca

Comments: Gated by NETNEWS@AUVM.AMERICAN.EDU
Newsgroups: comp.infosystems.gis
Date:         Mon, 25 Jan 1993 14:54:30 U
From:         Mike Phoenix <esri!mailgate_esri!mike_phoenix@UUNET.UU.NET>
Subject:      Digital Chart of the World

                       Subject:                               Time:2:29 PM
  OFFICE MEMO          Digital Chart of the World             Date:1/25/93
I, and others, have been getting a number of requests for this information, so
I think it deserves to be posted.

The Digital Chart of the World is a 1.7 GB digital geographic database that is
available on CD-ROM.  It was input from 1:1,000,000 Operational Navigation
Charts and 1:2,000,000 Joint Navigation Charts.  It includes 17 layers,
aeronautical info, data quality info, drainage, supplemental drainage,
hypsography, hypsography supplemental, land cover, ocean features,
physiography, political/ocean, populated places, railroads, transportation
structure, utilities, and vegetation.

It is available from:

For civilian customers only (military users have a different set of contacts in
each of the four regions)


In the US, Latin America, Asia, and Africa

U.S. Geological Survey
ESIC-Open File Section
Box 25286
Federal Center
Mail Stop 517
Denver, CO 80225, USA
Tel. (303) 236-7476


In Canada

Products and Services Division
Surveys, Mapping, and Remote Sensing Sector
Energy, Mines and Resources Canada
615 Booth Street, Room 400
Ottawa, Ontario, CANADA K1A 0E4
Tel. (613) 995-2123
Fax. (613) 995-6001


In Europe

Chadwyck-Healey Ltd.
Cambridge Place
Cambridge CB2 INR
UNITED KINGDOM
Tel. (0223) 311479
Fax. (0223) 66440


In Australia

The Manager
AUSMAP Data Unit
P.O. Box 2
BELCONNEN ACT 2617
AUSTRALIA
Comments: Gated by NETNEWS@AUVM.AMERICAN.EDU
Newsgroups: comp.infosystems.gis
Date:         Thu, 21 Jan 1993 10:04:24 EST
From:         jan mersey <GEOJAN@VM.UOGUELPH.CA>
Subject:      GISTutor

Could someone out there in netland provide me with information about
the GISTutor program developed at Birbeck College?  Is it still
available, what hardware does it require, what does it cost, etc.
Many thanks!  Jan Mersey  (geojan@vm.uoguelph.ca)
Comments: Gated by NETNEWS@AUVM.AMERICAN.EDU
Via: uk.ac.uwe-bristol.csd; Thu, 21 Jan 1993 12:23:45 +0000
X-Mailer: ELM [version 2.3 PL11]
Newsgroups: comp.infosystems.gis
Date:         Thu, 21 Jan 1993 12:08:27 GMT
From:         "Lord Lucan." <tk_ounst@CSD.UWE-BRISTOL.AC.UK>
Subject:      Re: Spatiotemporarl Bibliography

if anyone else mentions spatiotemporal bibliography my screen's going to go
POP!!!!!.
Wouldn't say no to a copy, though.
tk_ounst@uk.ac.uwe.csd
Newsgroups: comp.infosystems.gis
From: srobeson@nickel.ucs.indiana.edu (scott robeson)
Subject: Re: climate
Organization: Indiana University
Date: Thu, 28 Jan 1993 19:37:15 GMT

In article <1k9c2h$s9f@agate.berkeley.edu> map@violet.berkeley.edu (Pollen Lab;103 ESB;38108;;NZ29) writes:
>In article <01GU117LD10U0017JC@EKU.BITNET> GEOWASSE@EKU.BITNET writes:
>>>  ...  to deal with elevational effects on temperature... I assume
>>>that some algorithim exists for determining rate of change of temperature
>>>based on average slope rise, or somesuch, but I am not quite clear on that.
>>
>>        The average environmental lapse rate is 6.5oC / 1000m
>
>    I think you can do better than the global average ELR for your
>study area.  In the Sierra Nevada, Jack Major from UC Davis used
>climate data from the existing stations to calculate temperature
>lapse rates along various E-W transects.  He generally found a
>temperature decrease of about 0.5 deg. C / 100m.  If you can get
>the existing temperature records for your area (e.g. off the
>World Weather CD-ROM or other digital source), it would be easy
>to calculate average temperature lapse rates for your areas in Utah.

This also raises the point of timescale.  Depending on the length of
your time average (hourly, daily, monthly), average lapse rates may
or may not be useful.  So, if the World Weather CD-ROM has radiosonde
data, the averaging interval is crucial.  The shorter, the better.

-- 
Scott Robeson                             srobeson@indiana.edu
Department of Geography, 120 Student Building	                    
Indiana University, Bloomington, IN 47405  Phone: 812-855-7722
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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Newsgroups: comp.infosystems.gis
Date:         Tue, 26 Jan 1993 17:50:27 -0500
From:         "Dan Johnson, Agriculture Canada, Research Station, Lethbridge,
              AB" <HOPPER@ABRSLE.AGR.CA>
Subject:      GRASS and ALTEK don't agree?

We are having an unusual problem with GRASS 4.0 and we wonder if it has
been noticed by other users.  Calibration of the digitizer indicates that
squares on graph paper come out like rectangles, but not always the same
side length, and this only seems to happen below a side of 3 cm on the table!
The software managers say the problem lies with the table (Altek Model AC30,
table HS-243, Gentian Electronics), and the digitizer people naturally say
that the problem lies with GRASS.  Any similar experiences?

- Anne Smith; Dan Johnson

smitha@abrsle.agr.ca
johnson@abrsle.agr.ca

Research Station
P.O. Box 3000 Main
Lethbridge, AB Canada T1J 4B1
phone (403) 327-4561, ext. 301
facs. (403) 382-3156
Comments: Gated by NETNEWS@AUVM.AMERICAN.EDU
Subject: (no subject given)
Full-Name: Geoffrey Wright
Mime-Version: 1.0
Content-Type: TEXT/PLAIN; CHARSET=US-ASCII
Newsgroups: comp.infosystems.gis
Date:         Fri, 22 Jan 1993 12:37:11 -0500
Reply-To:     Geoffrey Wright <jwright@MINERVA.CIS.YALE.EDU>
From:         Geoffrey Wright <jwright@MINERVA.CIS.YALE.EDU>

On Thu, 21 Jan 1993 00mtklein%BSUVAX1.BITNET@UBVM.cc.buffalo.edu wrote:

>  I didn't know he was doing a study on (excuse me) "environmental racism"
>
>  I thought I was.  Oh, well.   Matt


Your right - I am not.  Just interested in the issue.

Jed Wright
Yale University
New Haven, CT
Comments: Gated by NETNEWS@AUVM.AMERICAN.EDU
Newsgroups: comp.infosystems.gis
Date:         Thu, 21 Jan 1993 10:42:24 PST
From:         Jerry Carter <jerry@ELDORADO.WRC.UNR.EDU>
Subject:      Re: Environmental Racism

Following the thread initiated by Geoffrey Wright
<jwright@MINERVA.CIS.YALE.EDU>, something becomes increasingly clear:
there are apparently remarkable numbers of people out there in the GIS
world with FAR too much time on their hands!!  Have you people nothing
better to do than to pontificate about the political correctness of
Mr.  Wright's choice of language!?!  You certainly must have more
generous funding sponsors that I do!

I find it difficult to believe that there is ANYONE who didn't know,
upon reading the initial inquiry, precisely what Mr. Wright was
seeking.

----------------------------------------------------------------------

Geoffrey, studies have been conducted which are similiar in nature to
yours.  You may want to check with:

1. EPA Office of Toxic Substances, Toxic Release Inventory (TRI), can
be obtained via U.S. Dept. of Commerce, National Technical Information
Service, Springfield, VA
    (703) 487-4650

2. EPA Office of Toxic Substances, Exposure Evaluation Division,
Graphical Exposure Modeling System (GEMS)
    (202) 382-3929  or  (202) 382-3928  or  (202) 382-3894

3. U.S. Dept. of Health & Human Services, National Library of Medicine,
Toxicology Data Network (Toxnet)
    8600 Rockville Pike Bethesda, MD  20894 (301) 496-6531  or  (301)
    496-1131


Good Luck.

----------------------------------------
Jerry Carter
GIS Coordinator
Desert Research Institute
jerry@eldorado.wrc.unr.edu
----------------------------------------
Comments: Gated by NETNEWS@AUVM.AMERICAN.EDU
Newsgroups: comp.infosystems.gis
Date:         Wed, 27 Jan 1993 18:20:46 PST
From:         Robert Guralnick <robg@FOSSIL.BERKELEY.EDU>
Subject:      Re: climate

No, actually a fair portion of that mad sense, although I missed how
you exactly plan to deal with elevational effects on temperature... I assume
that some algorithim exists for determining rate of change of temperature
based on average slope rise, or somesuch, but I am not quite clear on that.
As for the other information, I have an inkling of what to do before, but
this helps... any more clarification you can provide is appreciated!

Thanks again, and I will let you know about how successful we are.

Robert Guralnick
Systems Administrator
Museum of Paleontology.
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Newsgroups: comp.infosystems.gis
Date:         Sat, 23 Jan 1993 09:07:58 -0500
From:         Bob <HOLLIDAY@WVGEOG.WVNET.EDU>
Subject:      Re: amls and directories

You're right Daemon.  Create an AML Directory, and then reference that
 directoryin your station file using the &amlpath command.

cheers,
Bob
Holliday@wvgeog.wvnet.edu
From: anne@cco.caltech.edu (Anneliese Lilje)
Newsgroups: comp.infosystems.gis
Subject: Re: where to find USGS elevation data
Date: 25 Jan 1993 20:41:23 GMT
Organization: California Institute of Technology, Pasadena
NNTP-Posting-Host: sandman.caltech.edu

In article <C1990s.22B@acsu.buffalo.edu> dmark@acsu.buffalo.edu (David Mark) writes:
>In article <1993Jan21.162100.19170@noose.ecn.purdue.edu> mccauley@ecn.purdue.edu (Darrell McCauley) writes:
>>In article <9301211450.AA07717@gwdokokl.UUCP>, Alan Rea <gwdokokl!ahrea@MAILHOST.ECN.UOKNOR.EDU> writes:
>>
>As someone else has recently noted, and as is described in this group's FAQ,
>there is an ad hoc version of what you describe, a sort of digital swap-meet,
>on spectrum.xerox.com [192.70.225.78].  I forget the kind person who set it
>up, but people who had public domain geographic data sets were encouraged to pu
>them there.  As also has been noted here, there is a nice set of specially
>prepared (by Mark Kumler together with folks at USGS Menlo Park) DEMs
>representing all the major physiographic regions of the US, available by
>anonymous ftp from ncgia.ucsb.edu.
>
>The main problem is that for applied work, the researcher needs the DEM of
>their study area.  There are approximately 55,000 USGS 7.5 minute
>quadrangles that form the units for DEMs.  Since these DEMs in their
>raw form are a meg or two, if complete converage could be collected, it
>would be more like 50 or 100 Gigabytes if I am doing the rough math
>correctly.
>
>Personally, I think this is something that USGS itself should do, put all
>their public-domain data on ftp servers.  I also think we will see that in
>the next 4 years, but that is strictly my opinion/prediction and not based 
>on any information from USGS.

As someone who has had to suffer for the lack of digital data from the 
USGS, I can tell you this is a severe problem. DEM's for many areas
are totally insufficient for work in my area, geology. In particular
geological mapping of the Los Angeles Basin and of course the Landers
Earthquake rupture area. Although some of the DEM's are made from 1:24000
topos, the ones needed for our area are not, and a scale of 1:24000 to
say 1:10000 is ideal for mapping work. At the present time, we order
clear mylars with topolines only from the U.S.G.S and scan them in at 700
dpi. At this resolution gridline in arc info does a great job of 
recreating the topos with VERY FEW errors. I have then written an aml
to tag each arc with an elevation. The resulting data models are perfect
for geologic mapping. 

I have spoken with several people in the U.S.G.S. including the head
of the present 1:100,000 project (they are putting the 1:100,000 scale
maps on ARC/INFO). As it stands the reason for not getting topos on line
in ARC/INFO or whatever is simply money. They are grossly underfunded.
And that's sad. There is so much geologists could get out of using GIS
if the data were already available in digital form. Sigh. Oh well.


anne
From: srlnrow@lhn.gns.cri.nz
Newsgroups: comp.infosystems.gis
Subject: MapInfo for Macintosh - Pen Plotter output
Date: Tue, 26 Jan 93 21:38:39 GMT
Organization: Institute of Gelogical & Nuclear Sciences, New Zealand.
NNTP-Posting-Host: lhn.gns.cri.nz

Is anyone out there using MapInfo for the Macintosh with a pen
plotter? We are thinking of getting this software (to run on a IIvx),
but the local agents don't have much Macintosh experience. We want to
produce HPGL plot files that can be transferred to a DraftMaster II
plotter that is attached to a Vax queue. It seems that MapInfo for
Macintosh doesn't come with plotter drivers and only supports the
standard Mac printers selected through the chooser (which for us is a
LaserWriter).

Any other comments about MapInfo for Macintosh would be welcome. Note:
getting the Windows version instead is not an option :-)

______  Roger Williams, Institute of Geological & Nuclear Sciences  ______
_______________  PO Box 30-368, Lower Hutt, NEW ZEALAND  _________________
___________  Telephone + 64 4 569 9059, Fax + 64 4 566 6168  _____________
_________  srlnrow@lhn.gns.cri.nz  :  Vax 3600 - VAX/VMS v5.3  ___________
Newsgroups: comp.infosystems.gis
From: dmarble@magnus.acs.ohio-state.edu (Duane F Marble)
Subject: Mail vs Posting
Organization: The Ohio State University
Date: Fri, 22 Jan 1993 11:46:10 GMT

The postings from this group have been filled recently with requests
for the space-time bibliography. Might I suggest that these requests
might have been addressed to the individual concerned by direct e-mail
rather than going to thousands of machines around the world?
-- 
Duane F. Marble			       E-mail: dmarble@magnus.acs.osu.edu
Department of Geography                Telephone: (614) 292-2250
The Ohio State University
Columbus, Ohio 43210                   Fax: (614) 292-6213
Comments: Gated by NETNEWS@AUVM.AMERICAN.EDU
Newsgroups: comp.infosystems.gis
Date:         Tue, 26 Jan 1993 15:28:52 -0800
From:         Rushdi Ariss <rariss@WX.GTEGSC.COM>
Subject: Re: MapInfo for Macintosh - Pen Plotter output

        Hi Roger,

        Let me state upfront that I have not used MapInfo, but I may be able
to assist you with you question.

        While the software may not support direct plotter output, and few do,
you can use a program like Plottergiest or MacPlot Professional to redirect the
images to the plotter.

        Any of the Mac Magazines should have info on where you can obtain
either product.  I've used, and recommend the Mac Plot, though I've heard that
Plottergiest is better.

        Good luck!

        Rushdi A. Ariss
        rariss@wx.gtegsc.com
Comments: Gated by NETNEWS@AUVM.AMERICAN.EDU
X-Envelope-to: GIS-L@UBVM.BITNET
Newsgroups: comp.infosystems.gis
Date:         Thu, 21 Jan 1993 13:31:29 -0500
From:         Henrry H Stevens <HHSST@PITTUNIX.BITNET>
Subject: Re: Mac GIS's

I greatly enjoy MapII put out by Micha Pazner, Chris Kirby and others at the Uni
   versity
of Western Ontario (1-519-661-2111 ext . 4501).  It has strong spatial analysis
capabilities and is EASY to use.  It presently lacks a database interface, thoug
   h
though with Mac's convenient multitasking I have not yet found that to interfere
with my own work.  They have promised a "professional version" within the year
which will have full database capabilities.  I recommend it.

Henry Stevens   hhsst@unix.cis.pitt.edu
Dept. of Biological Sciences
University of Pittsburgh
From: chad@ceco.ceco.com (Chad W. Bohlmann)
Newsgroups: comp.infosystems.gis
Subject: GIS Plus
Date: 27 Jan 93 23:25:17 GMT
Organization: Commonwealth Edison Co., Chicago, IL

Hello all,
	I was wondering if anyone could give me a pointer to where I 
can find GISPLUS software.  Someone here was thinking about using it 
on a handheld PC, and I wanted to know a bit more about it
before something goes wrong and they ask me to find out what.

Thanks,

Chad Bohlmann
Newsgroups: comp.infosystems.gis
From: student@water.agen.ufl.edu (Login For Student)
Subject: Re: How to overlay two windows in ARC/INFO
Reply-To: student@water.agen.ufl.edu (Login For Student)
Organization: U of Florida. Engineering Computing Support Facility
Date: Mon, 25 Jan 93 14:16:52 GMT

In article <1993Jan21.151221.4547@seas.gwu.edu>, marshall@seas.gwu.edu
(Christopher Marshall) writes:
|> >I have one window with GPS data in it and another with map data in it
|> >and would like to overlay the two.  Does anyone know how to do this?
|> >Can you make one of the windows transparent?  How?
|> 
|> >Thanks in advance,
|> 
|> >Chris Marshall
|> >marshall@seas.gwu.edu
|> 
|> I forgot to mention that I am using the ARC/INFO software toolset,
|> specifically the ARCPLOT package.  I need some way to make one of the
|> two windows transparent, and to coordinate the zoom and pan functions
|> between the two windows so that when one changes scale or position,
|> the other matches it.
|> 
|> Again thanks in advance,
|> 
|> Chris Marshall
|> marshall@seas.gwu.edu

If both of your coverages are in the ARC/INFO format there should be 
no problem in overlaying the two in ARCPLOT.  For example, if they are
both polygon files you could say:

POLYS coverage1
POLYS coverage2

ARCPLOT will draw the polygons from the first coverage and then the polygons
of the second coverage (you might want to change the linecolor between the
two).  You can zoom-in and zoom-out using the MAPSCALE command.  Since
everything is georeferenced, if you clear the screen and do the POLYS commands
again, both coverages will be drawn at the new scale.

I am assuming that all of this is being done in one ARCPLOT window.  It
is possible to do these kinds of things (zoom-in, etc) in two ARCPLOT 
windows (except transparent overlaying of two windows) but it is a little
more advanced and, perhaps, is best done in an AML (a user created ARC/INFO
procedure).  I am not sure if I have answered your question.  If you need 
more info send me some mail.

Good luck,

Babak
student@water.agen.ufl.edu
From: CVDLEPI2@UCDCVDLS.BITNET (Jim Case)
Newsgroups: comp.infosystems.gis
Subject: COnversion to Lat-Long
Date: 28 Jan 93 18:18:49 GMT
Comments: Gated by NETNEWS@AUVM.AMERICAN.EDU

Does anyone know of a algorithm for converting Eastern-Northern coordinates
to Lat-Long?  We have some data from Australia that is positioned using
E-N coordinates and would like to move it into another system.

Thanks in advance

James T. Case, DVM, Ph.D                 University of California
Administrator, Information Systems       School of Veterinary Medicine
California Veterinary Diagnostic         P.O. Box 1770
   Laboratory System                     Davis, CA 95617
cvdlepi2@ucdcvdls.bitnet                 (916)752-4408
           "If you can't do it right...Do it neat..."
From: mccauley@ecn.purdue.edu (Darrell McCauley)
Subject: Re:      Re: Spatiotemporarl Bibliography
Organization: Ag Engineering Dept, Purdue University 
Date: Thu, 21 Jan 1993 10:41:44 GMT

In article <01GTR0VW78A89D5X7U@BOOTES.UNM.EDU>,  "JAMES I. EBERT" <EBERT@UNMB.BITNET> writes:
|> Hey, instead of everyone sending messages to the list in general, saying
|> that _they_ want the "spatiotemporal bibliography" too, why doesn't who-
|> ever advertised this thing in the first place just send it to the list,
|> so _everyone_ would have it!

or how about sending the requests to the original poster?!?!?

This has got to be one of the noisiest comp.* groups that I've ever read.
-- 
James Darrell McCauley                Dept of Ag Engineering, Purdue Univ
internet: mccauley@ecn.purdue.edu     West Lafayette, Indiana 47907-1146, USA
bitnet: mccauley%ecn@purccvm          UUCP: pur-ee!mccauley
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Newsgroups: comp.infosystems.gis
Date:         Thu, 28 Jan 1993 12:11:42 -0500
From:         Aining Zhing <zhing@EMR.CA>
Subject:      Greetings from EMR
              "hoffmann@URZDFN.KARTOGRAPHIE.TU-DRESDEN.DBP.DE" at Jan 27,
              93 10:56:44 am

Hi Frank / Hallo Herr Hoffmann !

Sie sind ja sehr activ in der GIS-liste !! Ich habe endlich einen bequemeren
 Zu-gang zum Netz (am Mac),David arbeitet ja in der Fernerkundung (im Keller,der
 Ar-me).Aber ein direktes Fenster habe ich auch nicht- zu viele
 'office-boxen'.Ich
schreibe vom account meiner 'office-mate',falls Sie eine Nachricht an mich sen-
den moechten bitte unter subject:Juliane.Haben Sie die Adresse (E-mail) vom
 Herrn Skupin?? Bis bald. Juliane.
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X-Envelope-to: gis-l@ubvm.cc.buffalo.edu
X-VMS-To: IN%"gis-l@ubvm.cc.buffalo.edu"
X-VMS-Cc: RE: WHAT AVAILABLE IN GIS MARKET
Newsgroups: comp.infosystems.gis
Date:         Thu, 21 Jan 1993 09:56:00 GMT+0200
From:         YOUSIF ALI HUSSIN <HUSSIN@ITC.NL>
Subject:      Re: What available in GIS market

Mr. Lee
See GIS World Source Book Survey.. it will give all the information you need

Yousif
ITC
Comments: Gated by NETNEWS@AUVM.AMERICAN.EDU
Via: uk.ac.portsmouth.csovax; Fri, 22 Jan 1993 17:04:04 +0000
Newsgroups: comp.infosystems.gis
Date:         Fri, 22 Jan 1993 16:55:00 GMT
From:         "John Whalley: Geol Computer Liaison. ext.2247"
              <WHALLEYJS@CSOVAX.PORTSMOUTH.AC.UK>
Subject:      RE: Mail vs Posting

I can only endorse Duane's plea, but must also remind everyone that the
original posting gave instructions about how to obtain the listings via FTP.
There were times during this last week when I wondered if I were the only one
to have retrieved the bibliography by this route :-) We owe it to ourselves to
use the net in a manner which is efficient for all of us and not just the way
which involves the fewest keystrokes at the time we see a message.

+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
John Whalley                                          Voice:-  +44 (705) 842247
Department of Geology                                 Fax:-    +44 (705) 842521
University of Portsmouth                              Telex:- 9312102102 (GL) G
PORTSMOUTH                    Email (JANET):- WHALLEYJS@UK.AC.PORTSMOUTH.CSOVAX
PO1 3QL                                              (WHALLEYJS@UK.AC.PORT.CV)
UK
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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Newsgroups: comp.infosystems.gis
Date:         Thu, 21 Jan 1993 15:06:54 -0700
From:         Merlyn Paulson <larch@LAMAR.COLOSTATE.EDU>
Subject:      DEM.Z files and ARC/INFO REV6.1

Can anyone tell me how to use binary dems (name.dem.Z) with ARC/INFO
REV 6.1?

Thanks for any help,

Merlyn Paulson
larch@lamar.colostate.edu
Newsgroups: comp.infosystems.gis