HDTenEightyP/NetNews huggingface dataset:
From: wsh8z@kelvin.seas.Virginia.EDU (William Scott Heyman)
Newsgroups: comp.graphics.explorer
Subject: mbuilder
Date: 30 Jul 92 18:57:46 GMT
Organization: University of Virginia

I am trying to use mbuilder to turn a trivial c subroutine into a
module:

void test(x,y)
double x, y;
{
  y = x*x;
}

I used no input ports and set x=3.0 using the <<Constant Value>> in
the connection window. 

The double value of y was sent to an output port "y out" which was 
defined a parameter in the output ports window.

Here is the error I get

--- test.mdw.o ---
        /usr/explorer/lib/cxMdw test

Creating Module Data Wrapper subprogram from modules resources
in file ./test.mres.
Module Builder: Module resources missing field of output port.
Port number 0, Expected field cxP_Out_y_out->type, Found field
->p.cx_param_double.val
 
Module Builder: Error: Exiting MDW code generator.
 
*** Error code 255
smake: 1 error



Could someone explain what I am doing wrong, what general concept I am
not grasping? I am trying to make as simple a module as possible and
then build up from there. I followed the example (Gradient3D) in the
_Explorer_Module_Writer's_Guide" and of course it worked, but it was
in FORTRAN and pretty complicated.

Thanks
Will Heyman		wsh8z@virginia.edu	UVA Applied Math
From: rpatil@nmsu.edu (Raj Patil)
Newsgroups: comp.graphics.explorer
Subject: OBject recognition algorithms...
Date: 27 Jul 92 20:41:40 GMT
Distribution: comp.graphics.explorer
Organization: Computing Research Lab


Hi: 

Has anyone implemented following features extraction routines?.
These features are mentioned in Pratt's Image processing book on page 646.
He has a reference to this which is unpublished Stanford Research Institute'
Notes. Has anyone implemented these or know of any place I can get hold 
of routines which can do following things.


1) The smallest rectangle oriented along the major axis of 
   the object that encompasses the object (Object oriented bounding box)
                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2) dimensions of object oriented box, width, height

3) the minimum and maximum distance between the centroid and a 
   perimeter pixel

4) The angle of the minimum and maximum radius vector with respect 
  to the horizontal axis

5) ratio of min radius angle to max radius angle.

raj

USDA, ARS
Newsgroups: comp.graphics.explorer
From: mikep@iastate.edu (Michael K Patterson)
Subject: Curvilinear and interpolate
Organization: Iowa State University, Ames IA
Date: Mon, 27 Jul 1992 18:46:43 GMT

When I feed 2d curvilinear data and a GENLAT lattice into interpolate,
many of my points are lost (become 0). Reading from the man page:

     KNOWN PROBLEMS
          For interpolation of a point lying outside of a curvilinear
          Source, a zero value is returned without any indication that
          the point lies outside the known grid.

Hmmm. can someone tell me what's wrong, or what I'm missing, or if It's not
me, what the problem is, so that I can work around it?


Thanks
------------Michael Patterson
(mikep@iastate.edu)

Newsgroups: comp.graphics.explorer
From: dres@qdpii.comp.qdpi.oz.au (Drought Research Account)
Subject: Reference counts
Organization: Queensland Dept Primary Industries.
Date: Wed, 29 Jul 1992 03:37:20 GMT

I have written a module which creates a lattice, using cxLatNew. The module
is actually to read in an obscure data format, so it needs to read the file
first to know how big to create the lattice. This is why I can't just let
the module data wrapper create the lattice for me. 

The question is, if I am reading many files using this, i.e. the module
is firing over and over again, I am coninually creating lattices and
never free-ing them. Even if all downstream modules manage to decrement
their reference counts correctly, on receipt of the next lattice, there does
not seem to be any way thet my module can decrement the reference count to the
previously created lattice, before creating a new one. What does actually
happen is that I slowly fill up more and more of the shared memory
arena.

What am I supposed to be doing in this situation ? Any hints ?

thanks in advance

Neil Flood

Newsgroups: comp.graphics.explorer
From: ianh@resmel.bhp.com.au (Ian Hoyle)
Subject: Re: Explorer User's Group Meeting
Keywords: explorer, siggraph
Organization: BHP Research - Melbourne Laboratories, AUSTRALIA
Date: Fri, 24 Jul 1992 22:22:07 GMT

tohanson@gonzo.lerc.nasa.gov (Jeff Hanson) writes:

>Announcing: The First IRIS Explorer User's Group Meeting!!

>Where:	SIGGRAPH '92 Chicago, Illinois, USA
>	McCormick Convention Center
>	John Evers Theatre

Please, please, please, please give a **full** summary of what was said
and discussed for those of us that can't attend.

We're sorta a __long__ way away down (up?) here !! Makes Chicago a difficult
place to convince managers to let you get away to for a week of fun :)

	ian
--
   /\/\     :  Ian Hoyle,  Senior Research Scientist
  / / /\    :  Image Analysis Group
 / / /  \   :  BHP Research - Melbourne Laboratories
/ / / /\ \  :  245 Wellington Rd, Mulgrave, 3170, AUSTRALIA
\ \/ / / /  :  Phone    +61-3-560-7066
 \  / / /   :  E-mail   ianh@resmel.bhp.com.au
  \/\/\/    :
            : "The kernel IS a continuously running random number
            :  generator" -- Larry Wall
From: rriv@oural.inria.fr (Robert Riviere)
Newsgroups: comp.graphics.explorer
Subject: Pyramid structure
Date: 23 Jul 92 13:56:09 GMT
Organization: INRIA, Sophia-Antipolis (Fr)

Hello,
 I am working on the Pyramid type. If I have well understood,
a Pyramid is a baseLattice of dimension 1, with a set of layers 
describing the connections. All right.

My question is :
Is there a way to associate data not to vertices ( like this is done
in the 1-D baseLattice ), but to higher level objects ? ( e.g.
associate data to segments or faces...).
Wouldn't it be possible by using the nexLattice field of
cxPyramidLayer structure ?

Has anybody ever done this ?

Thanks in advance,

-- 
Robert Riviere
(rriv@sophia.inria.fr)				Tel: (33) 93.65.79.06
Inria/CERMICS					Fax: (33) 93.65.77.40
BP 93
06902	Sophia Antipolis Cedex
Newsgroups: comp.graphics.explorer
From: tohanson@gonzo.lerc.nasa.gov (Jeff Hanson)
Subject: Explorer User's Group Meeting
Keywords: explorer, siggraph
Organization: NASA Lewis Research Center
Date: Thu, 23 Jul 1992 12:41:03 GMT

Just in case you have not already seen this in your mail (paper, that is).

Announcing: The First IRIS Explorer User's Group Meeting!!

Where:	SIGGRAPH '92 Chicago, Illinois, USA
	McCormick Convention Center
	John Evers Theatre

When:	July 29, 1992 (Wednesday)
	5 - 7 pm

Who:	Anyone interested in IRIS Explorer!!

What:	* SGI Engineering presetation re Explorer direction
	* Porting partners' discusion of Explorer on other platforms
	* Election of officers for future User Group activities
	* Distribution of freeware modules (on CD).
	* Open discussion of Explorer

Plus, as an added bonus, you can meet the Explorer ftp site managers
Gordon Cameron and Jeff Hanson.

See ya'
-- 
---------------------------------------------------------------------------
 Jeff Hanson - Scientific Graphics Programmer and Workstation Administrator
 Sverdrup Technology, NASA Lewis Research Center Group
 NASA Lewis Research Center, MS 86-4, Cleveland, Ohio 44135
 Telephone - (216) 433-2284  Fax - (216) 433-2182
 tohanson@gonzo.lerc.nasa.gov	-   ViSC: Better Science Through Pictures
Newsgroups: comp.graphics.explorer
From: xeno@iastate.edu (Gary L Snethen)
Subject: Question about Datascribe.
Organization: Iowa State University, Ames IA
Date: Thu, 23 Jul 1992 23:10:47 GMT

This is my first posting to this group, etc... etc...

I am attempting to read in a 2d curvilinear data file that has the data
listed bidirectionally...  Let me illustrate:

x coordinate   y coordinate    data
-----------------------------------
     0.0            0.0         2.3
     0.0            0.1         4.3
     0.0            0.2         4.2
     0.1            0.2         4.1
     0.1            0.1         3.2
     0.1            0.0         3.1
     0.2            0.0         2.3
     0.2            0.1         1.1
     0.2            0.0         2.5


This type of format occurs often during varios types of experimental scans
(whether they be ultrasonic, optical, xray, etc...) as the probe moves across
the surface in the following fashion:

>>>>>>>v
v<<<<<<<
>>>>>>>v
<<<<<<<<

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

Problem:  I need to coerce DataScribe into reading this format into a
          2d curvilinear lattice.

The way that made sense to me was to break the array into two components,
with one component representing all the odd lines and the other representing
all the even lines.  All the odd lines should be ordered from 1 to SIZE with
a stride of 1, and all the even lines from SIZE to 1 with a stride of -1.
When you break the output section's array up, both halves should run from
1 to SIZE, this difference between the input array and output array should
effectively reverse the ordering of data and coordinates for every other
line.

It was very strange... when I read the data, it insisted that my source
array was a different size than my destination array.

This doesn't make any sense since 1..SIZE has the same number of elements as
SIZE..1

If I reversed the ordering in the output section as well (so now they are
BOTH SIZE..1), it ran fine...  it was only if ONE was SIZE..1 and the other
was 1..SIZE.

If someone could enlighten me on what I might be doing wrong, or can think
of a better way to do it...  PLEASE email me at:


xeno@iastate.edu

Thank you...

---Xeno
(Gary Snethen)
From: rpatil@nmsu.edu (Raj Patil)
Newsgroups: comp.graphics.explorer
Subject: Object Classification
Date: 27 Jul 92 20:42:36 GMT
Distribution: comp.graphics.explorer
Organization: Computing Research Lab


Hi:

I am faced with following problem to be solved using image processing
techniques:

We are trying to classify different non-lint particles in a cotton sample
using imaging techniques.

Cotton sample after ginning contains different kind of trash material on the
basic of which cotton is graded for it quality. The trash (non-lint particles)
are of type pieces of leaf, bark, sticks, pepper (fine pieces of leaf), 
cotton seed coat fragments, etc. We are looking at different features
of these particles, area, perimeter, shape factor, eccentricity, moments etc.
Using these features we have achieved fairly good classification. We also 
used clustering approaches, Neural nets etc. 

Those who have seen some of these non-lint particles, is these anything else
that we need to consider as feature, in order to get a better 
classification ? Like most of real life problems, one major problem is 
of overlapping clusters of these trash types and increasing feature 
space may improve the classification.

Any suggestions and ideas are appreciated.

Regards

raj
USDA, ARS
Newsgroups: comp.graphics.explorer
From: foulser@homebrew.corp.sgi.com (David Foulser)
Subject: Re: Pyramid structure
Reply-To: foulser@homebrew.corp.sgi.com (David Foulser)
Organization: sgi
Date: Thu, 23 Jul 1992 22:18:56 GMT

| Hello,
|  I am working on the Pyramid type. If I have well understood,
| a Pyramid is a baseLattice of dimension 1, with a set of layers 
| describing the connections. All right.
| 
| My question is :
| Is there a way to associate data not to vertices ( like this is done
| in the 1-D baseLattice ), but to higher level objects ? ( e.g.
| associate data to segments or faces...).
| Wouldn't it be possible by using the nexLattice field of
| cxPyramidLayer structure ?

This is exactly what the nextLattice field is for. The elements of the 
cxConnection refer to the respective index into the nextLattice. This
way you can assign data values to edges, faces, and volumes.

Or if you use the pyramid for atoms, you can assign values to the 
different constituent parts. You might try looking (PrintPyr) at
the pyramid input to AtomicSurf.

| 
| Has anybody ever done this ?
| 
| Thanks in advance,
| 
| -- 
| Robert Riviere
| (rriv@sophia.inria.fr)				Tel: (33) 93.65.79.06
| Inria/CERMICS					Fax: (33) 93.65.77.40
| BP 93
-- 
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
David Foulser					foulser@sgi.com 
MS 7U-545
Silicon Graphics, Inc   			415/390-5338 
2011 N. Shoreline Blvd. 			415/965-7651 FAX 
Mountain View, CA 94039-7311
From: slackey@BBN.COM (Stan Lackey)
Newsgroups: comp.graphics
Subject: Color conversion algorithm
Date: 28 Jul 1992 15:23:35 GMT
Organization: Bolt Beranek and Newman Inc., Cambridge MA
Distribution: world
Reply-To: slackey@BBN.COM (Stan Lackey)
NNTP-Posting-Host: bbn.com

If anyone has access to an algorithm for converting hue/brighntess/saturation
to r/g/b, would you be so kind as to either post it or email me?  Thanks much!
-Stan

Newsgroups: comp.graphics,comp.binaries.ibm.pc.wanted
From: tabaer@magnus.acs.ohio-state.edu (Troy A Baer)
Subject: MS Windows shell for POV-Ray 1.0?
Summary: Where?
Organization: The Ohio State University
Date: Wed, 29 Jul 1992 14:00:39 GMT

I've already posted this once, but all I got was other people looking for
the same thing I am.

Anyway, I read in the docs for the MS-DOS version of POV-Ray 1.0 that I FTP'ed
from alfred.ccs.carleton.ca (134.117.1.1) that "There is at least one 3rd
party utility available that runs POV-Ray from within MS Windows and 
provides an easy interface for picking files and setting options."  However,
no name is given.  Does anyone know the name of this program, and if possible
an FTP site for it.

Please respond via email.  I will post a summary to comp.graphics if I find
anything.

	--Troy
+--------------------+-----------------------------------------------------+
|Troy A. Baer        | It could have been an organically based disturbance |
|tabaer@magnus.acs.  | of the brain -- perhaps a tumor or a metabolic      |
|  ohio-state.edu    | deficiency -- but after a thorough neurological     |
|an038@freenet-in-a. | exam it was determined that Byron was simply a jerk.|
|   cwru.edu         | 	--Jeff Jahnke, _It Was a Dark and Stormy Night:    |
+--------------------+		the Final Conflict_                        |
| What opinions?     |                                                     |
+--------------------+-----------------------------------------------------+
Note:  Most leading theologians claim this argument is a load of dingo's
	kidneys.
From: przemek@rrdstrad.nist.gov (Przemek Klosowski)
Newsgroups: comp.graphics
Subject: CALCOMP library to Postscript
Date: 30 Jul 92 02:45:49 GMT
Organization: U. of Maryland/NIST

Hello!
I need to convert a couple of our programs that use Calcomp graphics
library to output Postscript code for printing. I am sure that such
crutch has already been developed n times, and I just wanted to avoid
the n+1-th effort. Please let me know if you have heard of such thing

--
			przemek klosowski (przemek@rrdstrad.nist.gov)
			Reactor Division (bldg. 235), E111
			National Institute of Standards and Technology
			Gaithersburg, MD 20899,      USA

			(301) 975 6249
From: jvb7u@fermi.clas.Virginia.EDU (Jon Brinkmann)
Newsgroups: comp.graphics
Subject: code for Blue Noise dithering
Keywords: Blue Noise dithering
Date: 22 Jul 92 23:40:35 GMT
Organization: Department of Astronomy, University of Virginia

Back in 1987, Robert Ulichney published the book _Digital Halftoning_
(MIT Press, ISBN 0-262-21009-6).  He developed a dithering algorithm
he called Blue Noise, which gave superior results when compared to
other dithering algorithms.

Does anyone know of source code on the internet or in print to do
Blue Noise dithering?

Please Email you replies.  I'll post a summary.

Jon
---
Jon Brinkmann					Astronomy Department
Internet:	jvb7u@Virginia.EDU		University of Virginia
UUCP:		...!uunet!virginia!jvb7u	P.O. Box 3818
SPAN/HEPnet:	6654::jvb7u			Charlottesville, VA 22903-0818
Newsgroups: comp.graphics
Subject: PS files to Screen?
From: cachoo@lincoln.ac.nz
Date: 23 Jul 92 15:36:45 +1200

I'm not sure whether this is the right place to ask this, most of the
info discussed is over my head, but her it is:

Is there any program out there that can read a Postcript file and diplay
it on a EGA/VGA screen?
Is it possible at all, or is PS exclusively for use with printers?

Thanks

Oscar
From: Upstream Magazine <upstream@igc.org>
Newsgroups: comp.graphics
Date: 21 Jul 92 10:41 PDT
Subject: Help needed group 4 .tif files
Nf-ID: #N:cdp:1347100013:000:909
Nf-From: cdp.UUCP!upstream    Jul 21 10:41:00 1992


I'm looking for the descriptions of a few different file formats.
Can anyone help me uncompress a Group 4 .TIF file? I can read the
.TIF format down to being able to pull out a chunk of data that I
know is the image, but I can't recreate the bit map from it. A .C
routine would be ideal, as wouI could run the images through that
first. In fact, I have a conversion utility that converts to .PBM
format, so if anyone can help me understand that format (which I
know nothing about), I could run with that.

I think there are a couple of utilities with source code out there
that do the conversion. I have heard that the source to XV and
XLOADIMAGE are in the public domain. Can anyone point me to that,
or other similiar programs? The programs that I've seen that claim
to read .TIF files always stop short of Group 3 and Group 4
compression types.

Thanks for your help.

John Eckman
upstream  (Econet)


v
.
From: cpr@dde.dk (Claus Priisholm)
Newsgroups: comp.graphics
Subject: WANTED: algorithms for clipping rectangles
Date: 16 Jul 92 10:17:52 GMT
Organization: Dansk Data Elektronik A/S

I am looking for references to different algorithms for clipping
rectangles and to determine intersections between rectangles. 

I have been reading in "Fundamentals of Interactive Computer Graphics"
by J. D. Foley and A. Van Dam, where they discuss two algorithms
(Sutherland-Hodgman and Weiler-Atherton) for clipping polygons and
polyhedrons. I believe it would be overkill to use these algorithms
for my purpose (which resembles the problems involved in handling
overlapping windows in a window-system). I can think of a few ways to
do, but as speed is a prime factor I would like to study the subject a
little further. 

Thanks in advance...

C. Priisholm
+---------------------------+---------------------+---------------------------+
| Claus Priisholm           |                     | Dansk Data Elektronik A/S |
| Software Engineer         |   Runtime is        | Vindingvej 2C             |
| Euromax Department        |        Funtime!!!   | DK-7200 Vejle             |
| email: cpr@dde.dk         |                     | (+45) 75 72 26 00         |
+---------------------------+---------------------+---------------------------+
From: WJCMS@CUNYVM.BITNET
Newsgroups: comp.graphics
Subject: SIGGRAPH 82-90 procs - can someone send?
Date: 23 Jul 92 20:31:03 GMT
Organization: City University of New York/ University Computer Center

Hi,

I can't come to SIGGRAPH 92', but I'd like to get those 82-90 proceedings and
also the 92'-one, if possible.

If someone is interested to mail them to me (continental US), please drop an
email to: jjr@kti.mssm.edu or to: wjcms@cunyvm.bitnet

Janne Ravantti
Xref: sparky comp.graphics:8231 alt.graphics.pixutils:1832
From: mcaldwel@netcom.com (Michael Caldwell)
Newsgroups: comp.graphics,alt.graphics.pixutils
Subject: Re: PBMPLUS
Date: 28 Jul 92 15:43:19 GMT
Organization: Netcom - Online Communication Services (408 241-9760 guest)

In article <#+lmf=b.jef@netcom.com> Jef Poskanzer <jef@netcom.com> writes:
>johns@mcs213c.cs.umr.edu (John Stone):
>}    If anyone out there is using OS/2 2.0, I've got a fair portion of 
>}pbmplus ported now... I'm about halfway done... All that had to be done
>}to port each program is build a .lib file out of the libp?m*.c files,
>}and then to edit all of the file I/O stuff so that it uses binary
>}I/O instead of text (OS/2 and Dos both default to text mode on the
>}stdin and stdout)  
>}The hardest part about the OS/2 port is that IBM C Set/2 won't let you
>}use setmode() on a stream (which is how a friend of mine did a port of it
>}to dos...)  So I had to use fdopen(); to do it.
>}Using fdopen, means that I have to edit every call to a file I/O function
>}and make sure it calls my binary file handle, and not the regular stdout 
>}handle etc.
>
>I've seen other people doing DOS ports do the same thing, and I still
>can't figure out why.  How about just *replacing* stdout and stdin
>with binary-mode handles?  Seems like doing that and then fixing
>any bugs it introduces would be a lot less editing, and more
>importantly would not, if done right, need #ifdefs all over the
>place.
>---
>Jef
>
>           Jef Poskanzer  jef@netcom.com  jef@well.sf.ca.us
>"If you don't use Saber to develop your next C program, you're a dork."
>                             -- Brian Reid

I have already ported pbmplus to OS/2 2.0.  The libraries are dlls so they
can be shared by all the exes and not included to make each exe larger.
I have uploaded it to hobbes.nmsu.edu.  I put it in there downloads
directory which is for incoming files.  I don't know if they moved it or
if they deleted it.  The only changes I made were to the library files,
because the libc malloc does not work when linked in a dll, so I used
DosAllocMem.  Also included in the upload are the new .def files and the
new make files.

Michael
From: Henderson@cup.portal.com (Ray - Henderson)
Newsgroups: comp.graphics
Subject: need to obtain high res fractal images
Date: Fri, 24 Jul 92 10:51:43 PDT
Organization: The Portal System (TM)
Distribution: usa



I am looking for a high resolution fractal image, suitable
for reproduction as a book cover/2400 dpi color image.

I could use transparencies, 2x2 slides, prints, or electronic
versions...

any info on how I can obtain these (even for a fee) would be
appreciated...

henderson@cup.portal.com
From: subramanian@easi.enet.dec.com (The Sensei)
Newsgroups: comp.graphics
Subject: Text Generation Prog. For RAYSHADE
Date: 25 Jul 92 22:46:59 GMT
Distribution: usa
Organization: Digital Equipment Corporation


Hi,
	I recently got a copy of RAYSHADE, the public domain raytracing 
package. 

	I'd like to know if anyone out there has written a utility that
generates RAYSHADE description files for text strings i.e. given a string,
its origin and depth, to generate the corresponding RAYSHADE description
file that can be edited to allow RAYSHADE to raytrace the image....it is
a real pain to input the text with the existing primitives....

	Lalith


==============================================================================
Lalith Subramanian		email: 	subramanian@easi.enet.dec.com
EA Systems, Inc.		USnail: 960 Atlantic Ave,Alameda,CA 94501
Alameda, CA 
==============================================================================
Newsgroups: comp.graphics
From: jk87377@cc.tut.fi (Juhana Kouhia)
Subject: Re: Anyone seen Nick lately?
Organization: Tampere University of Technology
Date: Thu, 30 Jul 92 13:28:11 GMT


In article <_ppmf=k.jef@netcom.com> Jef Poskanzer <jef@netcom.com> writes:
>Mail to Nick Fotis has started coming back with "user unknown"
>instead of merely being ignored.  Is he really gone, or did
>he install some silly fake bounce hack, or what?

Hmm.. he sent his Resouce Listing a couple days ago.
This might just be a temporary loss of name server or something
in mail system.

Juhana Kouhia