HDTenEightyP/NetNews huggingface dataset:
X-Envelope-to: gis-l@ubvm.bitnet
X-VMS-To: IN%"gis-l@ubvm.bitnet"
X-VMS-Cc: VERITAS
Newsgroups: comp.infosystems.gis
Date:         Fri, 16 Oct 1992 10:00:00 PDT
              <GIS-L@UBVM.BITNET>
Comments:     Warning -- original Sender: tag was VERITAS@MAX.U.WASHINGTON.EDU
From:         VERITAS@U.WASHINGTON.EDU
Subject:      Re: Goodbye, and a Warning"

In view of Paul Tomblin's charge of forged messages posted to the net, perhaps
a discussion of security is in order.  I was under the impression that the
header of all messages contained a trail to the account that actually sent
the message.  If that is true, and the messages are archieved, then the node
that originated the forged messages should be informed so the malefactor can be
 disciplined (and we can be assured that the jerk will *NEVER* graduate).

I have no desire to heap this kind of work on the shoulders of our faithful
LISTSERV, but I would like to be reassured that in the event *I* get into
trouble, I can exonerate myself.

                   Charlie Hendricksen  veritas@u.washington.edu
From: 6500boo@ucsbuxa.ucsb.edu (William Bushing)
Newsgroups: comp.infosystems.gis
Subject: Skeletonizing Contour Lines
Date: 7 Oct 92 16:17:06 GMT
Distribution: comp

I used a scanner to scan in contour lines from a USGS color
separate. Because the scan was at "high" (300 dpi) resolution,
my scan lines are several pixels wide. I want to reduce them
to single pixel widths by "skeletonizing" the lines. This is
so I can run an inter-contour interpolation program to create
a DEM.

Any suggestions on skeletonizing algorithms or existing soft-
ware with such capabilities? Many thanks in advance.

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
William W. (Boo) Bushing  |  "Life is too important to be
6500boo@ucsbuxa.bitnet    |       taken seriously"
6500boo@ucsbuxa.ucsb.edu  | 
bushing@lifesci.ucsb.edu  |            - Einstein
Marine Biotechnology Lab   Univ. of Calif. Santa Barbara
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
From: dmark@acsu.buffalo.edu (David Mark)
Newsgroups: comp.infosystems.gis
Subject: Re: 3-d tactile GIS output
Date: 9 Oct 92 13:05:14 GMT
Organization: UB

In article <1992Oct9.095722.26710@magnus.acs.ohio-state.edu> dmarble@magnus.acs.ohio-state.edu (Duane F Marble) writes:
>Years ago (and I do mean years!) a device to do this was on the market.
>Worked, as I recall, by pushing wire segments up through a Styrofoam
>sheet and cutting them off.
>
>I also do not see any reason why one could not use a computer-controlled
>machine tool to create a 3-D terrain surface. I have seen some complex
>cams, etc.

If I remember correctly, the US Defense Mapping Agency or its predecesors
did the original 1:250,000 map digitization to make the DTMs in the 1960s
in order to drive computerized carving devices as a stage in making
relief models.  Arthur Noma was a leader in this work and had a paper
on it (I think) at the 1978 DTM Symposium in St. Loius.  (I know that Noma
had a paper on the 1:250,000 DTMs at that conference, just not sure if he
mentioned the sculpting.)  Apparently, it was only later that they began to 
realize that they might be able to do other things with the digital data!

"What goes around, comes around."  (Or is it the other way around?)

David Mark
dmark@sun.acsu.buffalo.edu
Newsgroups: comp.infosystems.gis
From: ddee@sunny.er.usgs.gov (David Dee)
Subject: Re: GIS World address
Organization: U.S. Geological Survey, Reston VA
Date: Fri, 16 Oct 1992 14:00:05 GMT

In article <Bw4p0E.KyK@doppler.ncsc.org> wivey@ncsc.org (William Ivey) writes:
>Does anyone have an Internet address for GIS World?
>
>
>
>Thanks,
>
>Will Ivey
>North Carolina Supercomputing Center
>wivey@ncsc.org
>

I checked my last issue (8/92), it appears they do not have a 
"published" email address. They can be reached via snailmail
at:

GIS World, Inc.
155 E. Boardwalk Drive, Suite 250
Fort Collins, CO    80525

attnet 303.223.4848
FAX    303.223.5700

Sorry if this is repetative.

Dave
-- 




Newsgroups: comp.infosystems.gis
From: pt@geovision.gvc.com (Paul Tomblin)
Subject: Goodbye, and a Warning
Reply-To: pt@geovision.gvc.com
Organization: Not officially GeoVision Systems Inc., Ottawa, Ontario
Date: Thu, 15 Oct 1992 01:27:35 GMT

Two things have happened recently that I think everybody on this newsgroup
should be aware of.

1.  I nearly lost my job because of something I said on this group in all
innocence.  Fine, I've since learned to be more formal in my language than is
the norm with other Usenet newsgroups, and more careful about what I express
an opinion about.  I don't have a problem with that.

2.  Somebody at a .edu site has been forging postings from me, because of
some imagined slight.  This normally wouldn't be much of a problem, except
for item # 1.

Because of these two things, I can no longer be liable for anything said in
my name in this newsgroup - the risks are too great.  Because of this, I am
unsubscribing, and warning anybody out there that any further postings from
me to this group are forgeries.  Previous forgeries were not to this
newsgroup, don't worry about that, but I'm worried that future ones might
be.  I will no longer be here to answer questions about GeoVision, although
I will still respond to email enquiries.

I don't know if anybody else at GeoVision subscribes to this group.  Sorry
if there is nobody to take up the slack, but I think you'll agree I have
good reason.

I may be back when that idiot graduates or leaves the network.

Bye.

-- 
Paul Tomblin, pt@geovision.gvc.com (Canadian first, Quebecer second)
"We sealed our federal pact without bloodshed and without exploitation of the
weak by the strong.  All it took was fairness, justice and some compromises
on both sides." - George-Etienne Cartier, Father of Confederation, 1867
Comments: Gated by NETNEWS@AUVM.AMERICAN.EDU
Newsgroups: comp.infosystems.gis
Date:         Wed, 7 Oct 1992 01:18:56 CET
              <GIS-L@UBVM.BITNET>
From:         Georg Magenschab <WIGEOMAG@AWIWUW11.BITNET>
Subject:      Mitsubishi G650 Driver specification needed ...

Hi,

Does anyone has experiences with a Mitsubishi G650 device?
We have a ABB thermo transfer plotter which translates HPGL into
Mitsubishi G650 language. Thats nice but obsolete.
Does anyone know about a driver for G650 (or G630) or a description
of the G650 format. Our local distributor is unable to provide
any informations ...

Thanks in advance

    ---------------------------------------------------------------
    !   George W. Magenschab                                      !
    !   University of Economics and Business Admninistration      !
    !   Geographical Institute                                    !
    !   Augasse 2-6                                               !
    !   A-1090 Vienna / Austria                                   !
    !   e-mail: wigeomag@awiwuw11.wu-wien.ac.at                   !
    !     Tel.: (0222) 313 36-4845                                !
    !      Fax: (0222) 313 36-703                                 !
    ---------------------------------------------------------------
Newsgroups: comp.infosystems.gis
From: rcw@teal.csn.org (Robert C. White Jr.)
Subject: Re:      League of Real Surveyors
Organization: Colorado SuperNet, Inc.
Date: Fri, 9 Oct 1992 06:11:30 GMT

In article <9210081229.AA07773@dg11svarmd> "(Theodore B. Samsel)" <tbsamsel@DG11SVARMD.ER.USGS.GOV> writes:
[Surveyors as obsolete bromide deleted]

I've also noted several surveyor friends of mine worry-out-loud about GIS and
GPS.  I don't think I'd worry too much, though.  It's just another tool that
enhances the job, and doesn't replace it.  There is a lot more to it than
just recording the plane coordinates of points here and there.

Certainly Texas land surveyors don't have to worry about being out of the
job any time soon.  Like broken glass, that stuff.


-- 
Robert C. White, Jr.					rcw@whitestar.com
Comments: Gated by NETNEWS@AUVM.AMERICAN.EDU
X-Envelope-to: GIS-L@UBVM.BITNET
X-VMS-To: IN%"GIS-L@UBVM.BITNET"
X-VMS-Cc: VERITAS
Newsgroups: comp.infosystems.gis
Date:         Sat, 10 Oct 1992 17:57:00 PDT
              <GIS-L@UBVM.BITNET>
Comments:     Warning -- original Sender: tag was VERITAS@MAX.U.WASHINGTON.EDU
From:         VERITAS@U.WASHINGTON.EDU
Subject:      3-D OUTPUT OF DEM

There is a machine that is used to create prototypes of machine parts.
Castings, forgings or machined parts can be prototyped, there is certainly
no reason terrain models couldn't be created.

This is how the machine works (more or less):  A geometric model is fed into
a computer which computes slices from the lowest "elevation" upward in .005"
increments.  Each slice is rasterized so all "pixels" which are solid in that
slice are switched on.  This raster image of the slice is used to drive a laser
which is focused on the top of a bath of some kind of resin which is solid-
ified by exposure to the laser light.  The slice which is now solid is then
submerged by the slice thickness and the operation is repeated for the next
slice.

This machine can make parts with cavities and very strange holes.  Try drill-
ing a spiral hole that is tapered!

Try bcontacting a manufacturing engineer who makes "lost wax" castings.
Maybe you could talk them into donating some time.  There is I'm sure, no
way any organization other than specialized manufacturers could buy one
of these things.

                    Good Luck!
                        Charlie Hendricksen  veritas@u.washington.edu
From: mcph@UNIX.CIS.PITT.EDU (Alan Mcpherron)
Newsgroups: comp.infosystems.gis
Subject: 3D physical models
Date: 13 Oct 92 22:16:28 GMT
              <GIS-L@UBVM.BITNET>
Comments: Gated by NETNEWS@AUVM.AMERICAN.EDU

I am greatly surprised, in this thread, to see no mention of Rapid
Prototyping, a method for creating solid shapes from digital data.
Widely employed in manufacturing industries to provide engineers
and designers with a way to see their ideas (e.g. car parts) played
out in 3d, it was developed to replace older methods, such as
having artists make prototypes out of clay.

The first rapid prototyping machine was produced in 1986 by Charles
Hull, president of 3-D Systems Inc.  Called a StereoLithography
Apparatus (SLA), it works on the principle of building up a 3d
object out of thin layers of plastic resin, which can be regarded
as the equivalent of contour lines on a map.

Other vendors of comparable systems are Quadrax Laser Technologies,
Micro-Cut Engineering Inc., Desktop Mfg. Corp, and Helisys Inc.

The second International Conference on Rapid Prototyping was held
in June 1991, meeting with the Society of Manufacturing Engineers,
and I believe it took place in Dayton, Ohio.  The University of
Dayton has a Rapid Prototype Development Lab.


                A l a n    M c p h e r r o n
		G I S  Lab,             : Tel.    412/648-7513
		Anthropology Dept.      : Telefax    /648-5911
		Univ of Pittsburgh      : mcph@archeo.anthro.pitt.edu
		PITTSBURGH PA 15260 USA :   or  MCPH@PITTVMS.BITNET
Newsgroups: comp.infosystems.gis
From:  pm@jimz.kuban.su (Kupiansky)
Subject: Looking for e-mail adress of TELESPAZIO (Italy)
Reply-To: pm@jimz.kuban.su
Organization: JrIMZ
Date: Wed, 14 Oct 92 15:58:41 -0500 

 Dear Sirs!

  We presume that our joint works in realization AGROTEL project will
start soon and would like to have direct E-mail communication between
Telespazio and SRILEM.

Sinserely
------------------------------------------------------------------------------
   Alexander Kupiansky                    Phone: +8612  572609
   --------------------                   Fax: +8612  557566
 South-Russian Institute of
 Lands & Ecosystems Monitoring            E-Mail:  pm@jimz.kuban.su
     Kpasnodar 350063
    st.Oktiabrskaja 31
         RUSSIA
-------------------------------------------------------------------------------


Newsgroups: comp.infosystems.gis
From: ajackson@wbs40cl (Alan K. Jackson)
Subject: Re: Confused about digital scales
Organization: Shell Oil
Date: Mon, 12 Oct 92 13:58:07 GMT

In article <19921011.191529.55@almaden.ibm.com> isw@vnet.ibm.com (Ian S Worthington) writes:
>In <9210102146.AA18985@gislab.sfsu.edu> Jerry Davis writes:
>>
>>Yes, you can plot a digital map at any scale, but its level of generalization
>>and accuracy are unchanged, and will always be related to the scale of
>>original digitization.  An important principle of cartography is that you
>>should never increase the scale of a map.  Traditionally this has referred to
>>optical (projective) means of scale change, but the same principle applies to
>>digital cartography and GIS.
>>.
>>.
>>.
>
>Jerry --
>
>Thanks for your most rapid response, and, yes, I agree with the points you make.
>But what I fail to understand is the sense in which a scale can be quoted for
>a database. What does 1:50,000 *mean* until its given some physical reality?
>
>Am I being very naive here, and missing something obvious?  Anybody?
>
>
>Ian S Worthington
>ALCS Development

I would hope (futile, I know) that what it means is that if the map
were plotted at 1:50,000, it would meet or exceed some standard of
accuracy like the USGS standards. Probably it only means that the
source document was a 1:50,000 document, so you can add the unknown
digitizing error to the inherent error in the original document to get
some larger, unknown and undefined error.

Folks are, in general very sloppy about quantifying the accuracy of their
data. Most mapping and GIS packages do not support this effort either.

Alan K. Jackson
Interpretive Data Processing Coordinator
Pecten International Company (a wholly owned subsidiary of Shell Oil Co)
...!moe.rice.edu!shell!ajackson ajackson@shell.uucp
-- 
Alan K. Jackson
Interpretive Data Processing Coordinator
Pecten International Company (a wholly owned subsidiary of Shell Oil Co)
..!moe.rice.edu!shell!ajackson ajackson@shell.uucp
Newsgroups: comp.infosystems.gis
From: dmarble@magnus.acs.ohio-state.edu (Duane F Marble)
Subject: GIS Job Opening in South Carolina
Organization: The Ohio State University
Date: Fri, 9 Oct 1992 18:28:51 GMT

The South Carolina Water Resources Commission has an opening for a
GIS Analyst II in Charleston, SC. Salary range: $29,244 - $ 53,865.

This individual will act as the lead analyst in the development of 
GIS applications. An education in geography or a natural resources
field is required and experience in marine science, marine policy
and oceanography is desirable.

Minimum Qualifications:
A master's degree in geography or a related field and two (2) years
experience in the development or maintenance of GIS, OR a bachelor's
degree and four (4) years experience. Must have a good working 
knowledge of ARC/INFO and AML programming.

Forms and a detailed description from:

	South Carolina Water Resources Commission
	Attn: Jo Ann Kelly
	1201 Main Street, Suite 1100
	Columbia, SC 29201

	(803) 737-0800   [0830 to 1630, Monday thru Friday]

-- 
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
X-Envelope-to: GIS-L@UBVM.cc.buffalo.edu
X-VMS-To: IN%"GIS-L@UBVM.cc.buffalo.edu"
Content-transfer-encoding: 7BIT
Newsgroups: comp.infosystems.gis
Date:         Thu, 8 Oct 1992 08:15:00 -0400
              <GIS-L@UBVM.BITNET>
From:         Tom Barnwell <BARNWELL@ATHENS.ATH.EPA.GOV>
Subject: Re: gis and environmental modelling con

I think you can Email Mason through:

Hewitt.Mason@EPAMAIL.EPA.GOV
Comments: Gated by NETNEWS@AUVM.AMERICAN.EDU
X-Envelope-to: GIS-L@UBVM.cc.buffalo.edu
X-VMS-To: IN%"GIS-L@UBVM.cc.buffalo.edu"
X-VMS-Cc: MSCHUFT
Newsgroups: comp.infosystems.gis
Date:         Mon, 12 Oct 1992 14:51:00 PDT
              <GIS-L@UBVM.BITNET>
From:         MSCHUFT@OAVAX.CSUCHICO.EDU
Subject:      Large format postscript

I would like to produce D or E size postscript files.  PC Arc/Info allows for
small format output ISOA3,A4,A5,ISOB4 and ISOB5.  These are not large enough.
Does anyone know of a graphics translator (PC) that might convert HPGL files to
Encapsulated Postscript?  Can anyone tell me what the size for ISOB4 and ISOB5
is?
Newsgroups: comp.infosystems.gis
From: osycs@giac1.oscs.montana.edu (Craig Spannring)
Subject: Re: Goodbye, and a Warning"
Keywords: n
Organization: Geographic Information & Analysis Center Montana State University
Date: Fri, 16 Oct 1992 23:31:46 GMT

In article <DD3DB1A33E1FA30CA3@MAX.U.WASHINGTON.EDU> VERITAS@U.WASHINGTON.EDU writes:
>I was under the impression that the
>header of all messages contained a trail to the account that actually sent
>the message.  

True, unless all or part of that trail has been faked.  The worst part is
that you don't need root access to forge mail or news.  You could try to 
get the logs from each of the machines the message has passed through
and find where the trail and the logs diverge, but many systems don't
keep those sort of logs.


> If that is true, and the messages are archieved, then the node
> that originated the forged messages should be informed 
> ...so the malefactor can be
> disciplined (and we can be assured that the jerk will *NEVER* graduate).

Assuming that it was a student.  Some recent mail exchanges I've had with 
some jerk at a .com site proves that a person can be a jerk without even 
being from a .edu site.

When using electronic mail and news assume:
  1)  The message you are reading could forged
  2)  Someone could be forging messages in your name.
  3)  Any private mail you send out could be intercepted
      by people that should not be reading your private mail.
  4)  All mail you receive could have been intercepted.
These problems are not common but they are hard to detect, harder
to trace, and impossible to prevent.  

BTW-  Although this message is a bit gloomy don't let it make you
      too paranoid.  


-- 
=========================================================================
 Six of one, 110 (base 2) of | Craig Spannring --- (406) 994-6128
 another.                    | osycs.giac1.oscs.montana.edu
 ----------------------------+ Geographic Information & Analysis Center
Comments: Gated by NETNEWS@AUVM.AMERICAN.EDU
Newsgroups: comp.infosystems.gis
Date:         Thu, 15 Oct 1992 16:17:00 CDT
              <GIS-L@UBVM.BITNET>
From:         Y13MXJ1@NIU.BITNET
Subject:      Re: Help needed in geocoding

When it comes to geo-coding, many GIS software packages are claimed
able to do it.  Arc/Info certainly has an AML routine developed to
handle address matching/geo-coding problems.  It also comes with a
utility program to import the TIGER files.  If you find Arc/Info
too complex to deal with, try some other packages like ATLAS*GIS or
GisPlus.  They both give you a decent performance for what you want
(maybe overkill if you just want to know the address range where
the address in question is falling).

Ji Minhe
Center for Governmental Studies, NIU
Comments: Gated by NETNEWS@AUVM.AMERICAN.EDU
Newsgroups: comp.infosystems.gis
Date:         Fri, 16 Oct 1992 14:16:00 PDT
              <GIS-L@UBVM.BITNET>
From:         "Virginia Hetrick, in sunny Calif" <IARGRAF@UCLAMVS.BITNET>
Subject:      GIS Gems

If somebody takes up this task, I'd suggest getting permission
to use Stig Nordbeck's polygon search algorithms from the Lund
Cartography series for starters.

Similarly, any algorithms related to spatial statistics would seem
to be potential candidates (mainly because many are in either
obscure or otherwise not readily available publications).

virginia
From: ST00@SIUEMUS.BITNET (ST00000)
Newsgroups: comp.infosystems.gis
Subject: dxf to mapinfo or atlas format
Date: 16 Oct 92 18:03:44 GMT
              <GIS-L@UBVM.BITNET>
Comments: Gated by NETNEWS@AUVM.AMERICAN.EDU

Hi,
   You can use ARC/INFO to translate .dxf files to ARC/INFO
files and then translate to ATLAS*GRAPHICS files.
   The commands you need are:
    dxf2arc
    arc2atlas
   Both should be used at the ARC prompt in PC-ARC/info.

   After you translate to atlas .BNA files, you need to use
ATLAS import/export utility IE to import into atlas.
   For MAPINFO, it comes with a utility that will allow you to
convert .DXF files into mapinfo directly.
   Hope this is helpful.

C. Cao
st00@siuemus
Comments: Gated by NETNEWS@AUVM.AMERICAN.EDU
Via: uk.ac.manchester-computing-centre.cms; Sat, 10 Oct 1992 13:30:56 +0100
Newsgroups: comp.infosystems.gis
Date:         Sat, 10 Oct 1992 13:22:52 BST
              <GIS-L@UBVM.BITNET>
From:         phil <MZGXXPG@CMS.MANCHESTER-COMPUTING-CENTRE.AC.UK>
Subject:      Re: 3-d tactile GIS output
              9 Oct 1992 16:13:00 GMT from <STGG8004@IE.UCC.IRUCCVAX>

Darius' suggestion of contacting Andrew Tatham regarding tactile mapping,
especially within Europe, is one I would endorse.  However, Andrew is now
at the Royal Geographical Society, 1 Kensington Gore, London SW7 2AR having
taken over as Keeper of the collection at the end of september, as I under-
stand it.

Philip Guest
Carto-bibliographic Project
Dept of Geography, University of Manchester, Manchester M13 9PL
email: MZGXXPG@UK.AC.MCC.CMS   phone: +44 61 275 3670   fax: +44 61 273 4407
Comments: Gated by NETNEWS@AUVM.AMERICAN.EDU
X-Envelope-to: gis-l@UBVM.BITNET
X-VMS-To: in%"gis-l@ubvm"
Newsgroups: comp.infosystems.gis
Date:         Tue, 13 Oct 1992 10:19:00 GMT
              <GIS-L@UBVM.BITNET>
From:         STGG8004@IRUCCVAX.UCC.IE
Subject:      DecNEWS listserver

VAX freaks on the list may like to know that the latest (paper) copy of
EDU News, the newsletter sent out by Digital to educational establishments
in Ireland, carries the announcement that they have launched DECNEWS, an
electronic newsletter for the Education and Research community. To get
on the mailing list, you send a subscription request in the usual way to
LISTSERV@UBVM.BITNET or LISTSERV@UBVM.CC.BUFFALO.EDU, depending on the
pecadillos of your local mailing system. Your request should have the
incantation SUBSCRIBE DECNEWS <Firstname lastname>

The announcement also says that supporting documents referenced in DECNEWS
can be downloaded by using the GET command sent to the same Listserver,
or by Anonymous FTP to the Digital public access gateway.

[As an aside, this is the first time I have heard of a commercial company
setting up a mailing list on an academic Listserv host. It will be interesting
to see how they cope with the Internet restrictions on overtly commercial
use.... :-) ]

Darius Bartlett
DJB@IRUCCVAX.UCC.IE
Comments: Gated by NETNEWS@AUVM.AMERICAN.EDU
Newsgroups: comp.infosystems.gis
Date:         Fri, 9 Oct 1992 10:04:00 PDT
              <GIS-L@UBVM.BITNET>
From:         "(Chris Hermansen)" <clh@TFIC.BC.CA>
Subject:      Re: 3-d tactile GIS output

Was it Ted who started this? I forget.

Anyway, also years ago, a friend of mine at the Mechanical Engineering Dep't
at UBC was working on a milling tool driven by a PDP-11 (no prize to those who
actually remember what a PDP-11 is).

Why not check with your local engineering school/faculty?

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

C'est ma facon de parler.
Comments: Gated by NETNEWS@AUVM.AMERICAN.EDU