HDTenEightyP/NetNews huggingface dataset:
From: rmrohre@afterlife.ncsc.mil (Randile the Reptile)
Newsgroups: comp.graphics.visualization
Subject: Re: Databases for Visualization data?
Date: 6 Oct 92 02:12:04 GMT
Organization: The Great Beyond


	I haven't kept up with latest in viz databases
but a few years ago the two leading contenders were:

	- CDF (Common Data Format) from NASA Goddard

	- HDF (Hierarchical Data Format) from NCSA (National Center for
	                                    Supercomputing Applications) 

I also seem to remember that there was a working group on viz data formats
and viz databases that met at SIGGRAPH within the past couple years.
I think that the minutes were published in one of the quarterly SIGGRAPH
publications (not the conference proceedings).

Sorry for the sketchy details but that's all I can recall without digging!





-- 
Randy Rohrer		   	&&   The George Washington University
rmrohre@afterlife.ncsc.mil           Depratment of EE&CS
                          	     rohrer@seas.gwu.edu
Xref: sparky comp.graphics.visualization:1413 comp.os.ms-windows.programmer.win32:1229
From: rcskb@minyos.xx.rmit.oz.au (Kendall Bennett)
Newsgroups: comp.graphics.visualization,comp.os.ms-windows.programmer.win32
Subject: Re: Ray-tracers for Windows and Windows NT (existing and announced)
Date: 30 Sep 92 02:10:36 GMT
Organization: RMIT Computer Centre
NNTP-Posting-Host: minyos.xx.rmit.oz.au

rujo@ulrik.uio.no (Rune J|rgensen) writes:

>I tried a post on this subject in comp.graphics and I got a reference to
>RenderLib, but as I understand it, the package can do rendering/shading,
>but not ray-tracing. So, is there announced any ray-tracing application or
>OEM kit for Windows or Windows NT? (I got a lot of email from people who
>were looking for the same.)

Raytracing is an extremely compute bound process, so it really has nothing
to do with _any_ type of user interface. Most raytracers around at the 
moment read the scene description from a file and then render it (taking
many hours - especially without fast hardware).

Why do you want to find something specific to Windows NT? Any raytracing
code written to run in a 32 bit environment will do the trick.

+------------------------------------------+-------------------------------+
| Kendall Bennett                          | Internet:                     |
| RMIT Advanced Computer Graphics Centre   | kjb@citri.edu.au              |
| CITRI Building, 723 Swanston Street      | rcskb@minyos.xx.rmit.oz.au    |
| Carlton Victoria 3053 AUSTRALIA.         |                               | 
+------------------------------------------+-------------------------------+
| CoSysop (Bossman), PC Connection Australia:               +61 3 688 0909 |
+--------------------------------------------------------------------------+
Newsgroups: comp.graphics.visualization
From: dpape@mrcnext.cso.uiuc.edu (Daniel Pape)
Subject: satellite pics
X-Newsreader: Tin 1.1 PL5
Organization: CSO Resource Center
Date: Sat, 26 Sep 1992 20:45:36 GMT

Does anyone know of an ftp site with any kind of pics of satellite photos of
the US or other countries? any format would be fine.

Dan Pape
Newsgroups: comp.graphics.visualization
From: minoja@icil64.cilea.it
Subject: conversion images
Organization: CILEA - Italy 
Date: Mon, 5 Oct 1992 10:31:00 GMT
Reply-To: minoja@icil64.cilea.it

  Is possible to convert a graphic image full color (24bit for pixel)
   to another one with 16 bit or less, using pbmplus routines ?

                                   Thank you 

                                    Bruno Minoja

  minoja@icil64.cilea.it
From: robasky@iguana.cis.ohio-state.edu (Kimberly Robasky)
Subject: Re: satellite pics
Organization: The Ohio State University Dept. of Computer and Info. Science
Date: Sun, 27 Sep 1992 18:40:05 GMT


Put this in your .cshrc:

alias maps 'ftp vmd.cso.uiuc.edu'

Type "maps" and login as anonymous.  cd to wx and you'll find giff files
there.

This news comes from Frank Robasky of the Byrd Polar Research Center at
Ohio State University.  email: frobasky@magnus.acs.ohio-state.edu.

Good Luck!

Kim Robasky
robasky@cis.ohio-state.edu
M.S., CIS, BME (in process)
From: webb@tsavo.hks.com (Peter Webb)
Newsgroups: comp.graphics.visualization
Subject: Re: Data Sites ..
Date: 2 Oct 1992 14:26:45 -0400
Organization: Hibbitt, Karlsson & Sorenson, Inc.
Distribution: world
NNTP-Posting-Host: tsavo.hks.com

rtipnis@cs.wpi.edu (Rajeev Tipnis) writes:
: 	I'd very very much appreciate if someone can post or send me
: 	a mail on the ftp sites for weather/satellite/census (multidimensional
: 	data) ...
: 

I'd suggest you get a copy of the Internet Resource Guide, available via
anonymous FTP from nnsc.nsf.net as resource-guide/resource-guide.txt.tar.Z.
This guide has one chapter devoted to a listing of public data sites.

-- 
			   Peter Webb, webb@hks.com
		  HKS Inc., 1080 Main St., Pawtucket RI 02860
		     Voice: 401-727-4200, FAX: 401-727-4208
From: lc1bocv1@cine88.cineca.it
Newsgroups: comp.graphics.visualization
Subject: IDL
Date: 3 Oct 92 09:29:09 +0100
Organization: CINECA, Italian Interuniversity comp. centre

I apologize for the FAQ, but can anyone explaine me what IDL is ?
Thanks in advances to everyone.

fabrizio ravegnani
lc1bocv1@cine88.cineca.it
From: CDO@IB.RL.AC.UK (C D Osland)
Newsgroups: comp.graphics.visualization
Subject: Re: Most widely used input-format for ray-tracers?
Date: 28 Sep 92 14:53:27 GMT

On 28 Sep 92 14:12:44 GMT you said:
>
>
>What is the most widely used input format for ray-tracing programs?
>(Interested in both the 3D data model requirements and the file format
>for transfering the model.)
>
The only three used by us are:

rayshade
winsom90
renderer

or rather the model file input formats for those three systems.

Cheers

Chris Osland
Rutherford Appleton Laboratory
Newsgroups: comp.graphics.visualization
From: rujo@ulrik.uio.no (Rune J|rgensen)
Subject: Most widely used input-format for ray-tracers?
Organization: University of Oslo, Norway
Date: Mon, 28 Sep 1992 14:12:44 GMT


I posted a question on this in comp.graphics and got a lot of response -
from people who wanted to know the same. So there is clearly an interest for
this question, but I received no suggestions for an answer. So I try again
in this conference. Both pointers and opinions are welcome:

What is the most widely used input format for ray-tracing programs?
(Interested in both the 3D data model requirements and the file format
for transfering the model.)

-Rune Jorgensen
 rujo@ulrik.uio.no
Newsgroups: comp.graphics.visualization
From: shanega@athena.mit.edu (Shane G. Artis)
Subject: Photorealistic RenderMan
Organization: Massachusetts Institute of Technology
Date: Sat, 3 Oct 1992 16:18:45 GMT


Hi, I hope this is the correct group for this posting.

I'm looking for documentation on the RenderMan shading language and
the format of .RIB files that are passed to RenderMan for display.
The version of RenderMan supplied with the NeXT comes with a bunch of
shaders and textures, but no documentation on them (I can get simple
ones to work, but can't pass parameters to them succesfully even when I
can figure out what the parameters are, so texture mapping and such
are out).  In addition, though I can determine that .RIB files are
quite similar to the RenderMan language itself (documented in The
RenderMan Companion which I already have), there is no document
describing its syntax explicitly.  Same is actually true for the
shading language which is well documented but lacks information such
as the exact output of functions like noise().  Anyway, I'm seeking
any documents on RenderMan, whether for the NeXT or for any other
platform that might be similar in its implementation.  Is there a
repository of documents on-line anywhere, or that can be purchased?
Does a newsgroup exist that is more or less dedicated to RenderMan?
Any help would be appreciated greatly.

E-mail would be preferred since I don't always have time to follow
this group.

Thanks!

Shane
From: andy@meefun.autodesk.com (Andrew Purshottam)
Newsgroups: comp.graphics.visualization
Subject: Ray Tracing 3 Manifolds other than R^3
Date: 29 Sep 92 22:47:09 GMT
Organization: Autodesk Inc.

Hi, anyone have any references or code for
the ray tracing of 3 dimensional Manifolds
other than ordinary space? I am aware of some work
on 3d projections of 4d space (a book published
by SA and a movie of a 4 sphere being distorted)
but I have seen on work on 3 manifolds.

I have been reading a great book _The Shape Of Space_
J R Weeks, about leanring to visualize 3 manifolds, which
stimulated my inquiry.

Thanks, Andy andy@autodesk.com
--
-
Andrew V. Purshottam      /\     |  andy@autodesk.com  ...!fernwood!acad!andy 
Autodesk, Inc.	         //\\    |  (415)332-2344x2161  FAX (415) 331-8093
2320 Marinship Way      ///\\\   |  Sausalito CA 94965
"The views expressed are those of the speaker."
Newsgroups: comp.graphics.visualization
From: m20163@mwunix.mitre.org (Nahum Gershon)
Subject: How to Lie and Confuse with Visualization
Summary: How to produce faithful visualization through how not to do it.
Keywords: visualization, image processing
Organization: The MITRE Corporation
Date: Tue, 29 Sep 1992 20:11:16 GMT




"How to Lie and Confuse with Visualization"


	People have lied with statistics and maps for years.  Now it's time to look into lying and confusing in the field of visualization.  Your big chance to do just that, in the open, will be in this special session of Visualization '92 Conference on Tuesday, October 20, 1992 at 7:00 pm.  You are invited to bring with you visualization lies and confusing articles, yours or others, on 35 mm slides or video.  During this evening, it will be allowed to lie but not to borrow credit, so please do not forget to ment



ion the producers' names.  After the informal presentations and truthful debates, the audience will choose the biggest (visualization) lie for 1992.  When the evening is over, lying will be outlawed again.  Then, we will be all able to benefit from this teaching of what it takes to produce realistic and faithful visualizations.

	Reservations and advance submissions are now being accepted (c/o Nahum Gershon, The MITRE Corporation, 7525 Colshire Drive, McLean, VA 22102).  Both are not required but are strongly recommended.  For more information (genuine!), please contact gershon@mitre.org or (703) 883-7518.
Newsgroups: comp.graphics.visualization
From: chuck@petro3.b17b.ingr.com (chuck woodbury)
Subject: HDF Format for geovoxel data
Organization: "Mapping Sciences Division, Intergraph Corp, Huntsville AL"
Date: Mon, 5 Oct 1992 17:07:41 GMT

Greetings,

I am looking for a source for hdf formatted geovoxel data.  If you have any I
can use, please contact me at my above address.  The data is needed for
testing 
purposes only.

Thanks,

Chuck Woodbury
Senior Software Analyst
Software Support, Certification, and Training
Earth Sciences Department
Mapping Sciences Division
Intergraph Corporation
From: rtipnis@cs.wpi.edu (Rajeev Tipnis)
Newsgroups: comp.graphics.visualization
Subject: Data Sites ..
Date: 2 Oct 92 17:25:34 GMT
Reply-To: rtipnis@cs.wpi.edu (Rajeev Tipnis)
Organization: Worcester Polytechnic Institute
NNTP-Posting-Host: maxine.wpi.edu


	I'd very very much appreciate if someone can post or send me
	a mail on the ftp sites for weather/satellite/census (multidimensional
	data) ...

	Thanks ..

-- Rajeev
From: ruckman@oasys.dt.navy.mil (Christopher Ruckman)
Newsgroups: comp.graphics.visualization
Subject: Wanted:  visualization software for PC's
Date: 28 Sep 92 15:01:19 GMT
Reply-To: ruckman@oasys.dt.navy.mil (Christopher Ruckman)
Organization: Carderock Division, NSWC, Bethesda, MD

(A recent query in comp.binaries.ibm.pc.wanted got no responses, so
I thought I'd try it here.)

Does anyone know of any DOS-based or MSWindows-based software that has
capabilities similar to the Spyglass software suite for the Mac?  In
other words, I want to do things like examine slices from a volume or
construct 3-D contours in a volume.  Any suggestions?

Folks at Spyglass stated that they would consider porting their
software to DOS or Windows if there was sufficient interest.  If anyone
reading this would like to see that happen, please drop me a line
(ruckman@oasys.dt.navy.mil) and/or contact Spyglass, Inc. directly.  Their
address is:  701 Devonshire Dr. C-17, Champaign, IL 61820, 217-355-1665.

If enough people respond maybe we can convince them to do a DOS or
Windows version.

Thanks.
Newsgroups: comp.graphics.visualization
From: realliso@unity.ncsu.edu (Robert Allison)
Subject: Databases for Visualization data?
Keywords: database
Organization: North Carolina State University Project Unity
Date: Sun, 4 Oct 1992 21:31:10 GMT

I'm working on a paper in a 500-level database class 
at North Carolina State University.  My topic includes
a study on the use of databases (or DBMSs) for the storing
and retrieval of data used in visualization.

It looks like most of the Visualization software works with 
the data in RAM, and then can save images into files, but 
not many seem to use any 'database' concepts to store and
retrieve the data.

I would appreciate any information you could relay to me 
about any of the software you use (or are developing) that
utilizes a 'DataBase Management System'.

Also, if you could point me towards any good articles or
papers on the topic, that would be excellent!

Thanks,
Robert Allison (realliso@unity.ncsu.edu)

Newsgroups: comp.graphics.visualization
From: kpm8447@tesla.njit.edu
Newsgroups: comp.graphics
Subject: Re: multiple gif images in one .gif file ???
Date: 1 Oct 92 15:50:53 GMT
Organization: New Jersey Institute of Technology

In article <T01-sv_@engin.umich.edu>, kca@engin.umich.edu (Jonathan Van Oast) writes:
> i am working on a project where peoples pictures are scanned and stored
> on our network.  rather than keep one file per person, i seem to think
> (am i right?) that you can store multiple images in one .gif file.  this
> way i could just keep a couple files (like group1.gif, group2.gif) which
> would each have several pictures in them.  is there such a standard for
> gif?  and, if so...
> 
> 1) is there a utility available to convert single gif files into one
>    multiple-gif file?
> 2) is there a public-domain/freeware DOS viewer for multiple gif files?
> 3) "              "                  MAC          "                   ?
> 
> ANY help would be great.  post here or email (kca@engin.umich.edu).
> THANKS!
-- 
How much space do you think you are going to save by putting multiple
images in one file.  You also have to use one palette so the pictures have
to be really close in color composition for it to work.  I've seen
"animated" .gif files that have multiple images one after the other, so it
displays one, then the next but I don't know if that is what you are trying
to do.  If you want to put 4 pictures on one screen (say a 640x480 screen
using 4 320x200 pictures) that can be done.  Programs like gds allow
multiple pictures for quick viewing of a library of images (at a lesser
resolution)

=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Kirk Membry             ( * * * T H I S   S P A C E   F O R   R E N T * * * )

kpm8447@tesla.njit.edu                                    kpm8447@teak.njit.edu
kmembry@andromeda.rutgers.edu                             kpm8447@maple.njit.edu
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
Newsgroups: comp.graphics
From: gerry@bluemoon.rn.com (Gerard M. Foley)
Subject: TIFF Standard
Organization: Blue Moon BBS ((614) 868-998[024])
Date: Mon, 05 Oct 92 07:47:10 EDT

   The story in PC Magazine, Dec 19, 1991, fails to tell the
significance of bytes 5, 6, 7 and possibly 8 in the TIFF
IFD (counting the first byte as 1, not 0).   
   Is there any easy description?  In most cases the string
is 01 00 00 00, but in the case of one conversion, by 
Windows PAINTBRUSH, from .PCX to .TIF, one string 
1E 00 00 00 was produced.

gerry@bluemoon.rn  My amateur radio callsign is K8EF, and my
packet radio address is K8EF@W8CQK.OH.USA.NA
Xref: sparky comp.graphics:10198 comp.sys.amiga.graphics:6501
From: c1a192@rick.cs.ubc.ca (Oliver Erik Seiler)
Newsgroups: comp.graphics,comp.sys.amiga.graphics
Subject: IFF -> PostScript Bitmap...
Date: 2 Oct 1992 10:21:53 -0700
Organization: Computer Science, University of B.C., Vancouver, B.C., Canada
Distribution: world
NNTP-Posting-Host: bowen.rick.cs.ubc.ca


Does anyone know of a graphics conversion program (with source) for converting
an IFF picture file into a postscript file? The program must run on either
a standard UNIX workstation running X windows, or on an Amiga.
  Thanks in advance...

-Oliver
-- 
+ Oliver Seiler + c1a192@rick.cs.ubc.ca +
 + Living the impoverished students life +
  + Send me money, send me cold hard cash +
   + Amiga, the one and only... whoooooooo +
From: doreen@cse.fau.edu (Doreen Worthy)
Newsgroups: comp.graphics
Subject: 3-D wire drawing of conch shell
Date: 30 Sep 92 14:33:42 GMT
Organization: Florida Atlantic University, Boca Raton, FL, USA


HELP!!!

I need a 3-dimensional wire drawing of a conch shell ASAP for
a poster we are creating.  It would be greatly appreciated if
any of you out there could send me this file, or information
as to where I can find it.

Please send your responses to worthy@tuna.cse.fau.edu

Many thanks ahead of time.

Doreen Worthy
Newsgroups: comp.graphics
From: vivek gupta <vigupta@tope.cs.indiana.edu>
Subject: Rayshade?
Organization: Computer Science, Indiana University
Date: Mon, 28 Sep 92 10:31:39 -0500

Hi,

I know I saw a post some time ago about where Rayshade could be ftped from, but the post seems to have disappeared. Could someone please post where it is available, I guess send mail directly to me and I will post the answer. 

BTW I would like to use it on either a MAC or a Sun Workstation, is it usable in both these environments??

Thanx,
Vivek Gupta
vigupta@greatwhite.cs.indiana.edu
Xref: sparky comp.graphics:10243 comp.sys.amiga.graphics:6540
From: stevem@sphinx.CSS.GOV (Steve Masters)
Newsgroups: comp.graphics,comp.sys.amiga.graphics
Subject: Re: IFF -> PostScript Bitmap...
Keywords: IFF PBMPLUS
Date: 5 Oct 92 01:40:01 GMT
Followup-To: comp.graphics
Organization: ENSCO, Inc., Melbourne, FL

In article <1ai0fhINN56r@bowen.rick.cs.ubc.ca> c1a192@rick.cs.ubc.ca (Oliver Erik Seiler) writes:
>
>Does anyone know of a graphics conversion program (with source) for converting
>an IFF picture file into a postscript file? The program must run on either
>a standard UNIX workstation running X windows, or on an Amiga.

The PBMPLUS suite of programs can get you from IFF to color or B/W postscript
on either you Amiga or a Unix workstation.  It is not a pretty mouse-and-menu
program but is instead a set of programs run from your shell that provides
graphical format conversion and image manipulation.

I use this set frequently on my Amiga (mostly to do FITS==>IFF conversions)
and our work Sun Workstations (to do conversions between IFF, xwd, sun raster,
GIF, and postscript).  Many other formats are supported, as well.  Your Amiga 
will need 2-3 MBytes of memory (4-5 is better if you have other applications 
loaded at the same time) to run the programs easily.

The PBMPLUS programs can be found on both popular Amiga and Unix archive sites.

Steve Masters   stevem@osiris.CSS.GOV
ENSCO, Inc.
Melbourne, FL  32940
Newsgroups: comp.graphics
From: podlipec@dgxyris.webo.dg.com (Mark Podlipec)
Subject: Re: raytracing swept objects
Date: Fri, 25 Sep 92 15:46:53 GMT
Distribution: comp
Organization: Data General Industry Standard Systems Design

In article <BAGCHI.92Sep22220950@quip.eecs.umich.edu>, bagchi@eecs.umich.edu (Ranjan Drzzzzt!  Bagchi) writes:
|> 
|> 	Consider this object:  I take a curve between two endpoints, and rotate
|> it 360 degrees about the y axis.  How would I go about ray-tracing the solid
|> I've just swept out.  
|> 
|> 	I've given this some thought.. and I'm fairly sure that in 
|> the general case, this is quite difficult.  But are there any classes
|> of curves which sweep out solids which are easy to get
|> ray-intersections and surface normals?
|> 
|> 	thanks.. rj

I've implemented an object for rayshade a couple of years ago which is
pretty similar to what you've described(I call it cubicspin). You take
any curve described by a 3rd degree polynomial and rotate it about an
arbitrary axis.  End points are also specified.

A third degree polynomial rotated like that becomes a 6th degree polynomial
and then you can substitute in the ray equations to find the point of
intersection. Throw in some checking for the end points and there ya go.
This is the brute force method.

I use natural cubic splines to specify the curve.

Now if you started with a 4th degree curve, you would have to solve
8th degree equations, etc.  But for the most uses, the extra degrees
don't buy you much.

Mark Podlipec   podlipec@dgxyris.webo.dg.com


Newsgroups: comp.graphics
From: kaufman@eecs.nwu.edu (Michael L. Kaufman)
Subject: Re: Primitive source code or algorithms
Organization: EECS Department, Northwestern University
Date: Wed, 30 Sep 1992 04:56:14 GMT

dave@cs.arizona.edu (Dave Schaumann) writes:
>_Computer Graphics: Principles and Practice_ by Foley, et al
>(ISBN 0-201-12110-7) has all the algorithms you'll ever need.

Lets give credit where credit is due:

_Computer Graphics: Principles and Practice_ by Foley, van Dam, Feiner, ande
Hughes (ISBN 0-201-12110-7) has all the algorithms you'll ever need.

Michael

-- 
Michael Kaufman | I've seen things you people wouldn't believe. Attack ships on
 kaufman        | fire off the shoulder of Orion. I watched C-beams glitter in
  @eecs.nwu.edu | the dark near the Tannhauser gate. All those moments will be
                | lost in time - like tears in rain. Time to die.     Roy Batty 
From: Renee.Teunissen@freudsys.nl.mugnet.org (Renee Teunissen)
Sender: Usenet@freudsys.nl.mugnet.org
From: rabjab@golem.ucsd.edu (Jeff Bytof)
Newsgroups: comp.graphics
Subject: Re: X-rated GIFs
Date: 27 Sep 1992 00:47:47 GMT
Organization: sio
NNTP-Posting-Host: lutherlab.ucsd.edu

John Kortink of the Netherlands drivels:

>But no, here's USA's prudeness again ... Live and let live, people. Next
>time religion sets in etc..

No John, it's not about prudishness, it's about resources.
Somewhere, some American taxpayer is footing the bill for most
of that stuff and they're wondering why there's not enough money
for Social Security and Veterans benefits.  The same 
American taxpayer who probably got your pappy's ass out of a sling in WWII.

Jeff Bytof
rabjab@golem.ucsd.edu

Newsgroups: comp.graphics
From: "david anjo" <david.anjo@canrem.com>
Subject: fractal image format
Reply-To: "david anjo" <david.anjo@canrem.com>
Organization: Canada Remote Systems
Distribution: comp
Date: 4 Oct 92 19:26:02 EST

Anyone out there had any experience with the Fractal Image Format (FIF) ?

There's a local soul who is devoting his BBS system to it and I've had the 
pleasure of checking out some of his images. I have not been disappointed. 
There would appear to be some substantial image compression, without 
significant image quality loss.

However, his demoing of the software is limited (viewer only, which is 
very video card chipset specific) in the sense that there appears to be a 
commercial venture behind it. I'm not all that concerned about having to 
spend money on an effective utility set, but I am concerned about long 
term viability.

Any opinions, advice, love letters, et al, would be most appreciated.

Thanks, in advance.

09:01  04/10/92  David Anjo
                 david.anjo@canrem.com

--- WinQwk 2.0b#285
--
Canada Remote Systems  - Toronto, Ontario
World's Largest PCBOARD System - 416-629-7000/629-7044