HDTenEightyP/NetNews huggingface dataset:
From: txn@sirius.larc.nasa.gov (Troung Nguyen)
Newsgroups: comp.graphics.avs
Subject: Novice question, please help! (second post)
Date: 19 Nov 1992 14:18:58 GMT
Organization: NASA Langley Research Center, Hampton, VA  USA
Distribution: world
NNTP-Posting-Host: sirius.larc.nasa.gov


  Sorry, my messed up the first post.  If you have trouble 
  reading the first one, please ignore it and use this instead
  Thank you.

  Truong Nguyen
  txn@radar0.larc.nasa.gov
================================================================


 Hi, I am new to this group and AVS.  I need some advise on the simple 
 problem below.

 I am having trouble passing parameters "min_ext" and "max_ext"
 from module "read field" to "field to mesh" in the network below


	   |Read Field|
		|
		|
		|
	   |Field to Mesh|	 |Generate Axes|
		|			|
		|------------------------
		|
	   |Geometry Viewer|

 
 What I was trying to do is to display 2d uniform field 
 between min_ext and max_ext (both x and y) so that I can superimpose 
 another geometry on top later on.

 What I got was a  mesh spaced between 0 and 120  instead of 
 between min_ext and max_ext in both x and y directions. 
 So, the question is how to display the mesh correctly between
 the min and max specified.

 I prefer not having to generate the xy coordinate points for 
 each grid point, the field is uniformly spaced.  And module
 "volume bounds" is not compatible with the 2d field.

 Thank you very much for responding. Please response via email.
 I use AVS Release 4 on a Sun if it matters.

 Truong Nguyen
 txn@radar0.larc.nasa.gov

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

 PS: Below is the field file to read the data. 

# AVS field file
# this is a header file for a field to be
# used in conjunction with the  build a field module of AVS
#
ndim = 2
dim1 = 121
dim2 = 121
nspace = 2
veclen = 1
data = float
field = uniform
min_ext = -.762  -.762
max_ext =  .762   .762
label = normalized_data

variable 1 file=./almond.dat filetype=ascii skip=3
^L^L

----------end of field file__________________________
Newsgroups: comp.graphics.avs
From: avs@ncsc.org (Terry Myerson)
Subject: New module at IAC
Organization: North Carolina Supercomputing Center
Date: Mon, 16 Nov 1992 17:49:04 GMT

Name        : combine_vectors Version      : 1.000     Mod Number : 1554 
Author      : Earl W. Hood, Convex Computer Corporation
Submitted   : 11/16/92        Last Updated : 11/16/92  Language   : C        
Ported to   : Convex IBM
Description : The Combine Vectors modules combines up to 4 vector and/or
              scalar fields into one vector field. The input ports of the
              module are processed from right-to-left. The resulting
              output field will have a vector length equal to the sum of all
              the vector lengths of the input field. Any labels and units
              will be carried over to the output field. Written because I
              got tired of using a bunch of extract_scalar modules when I
              wanted to process a vector component separately, and then
              use the combine_scalars module. (eg. process the R,G,B
              components of an image together, and then combine the R,G,B
              components back with the Alpha channel).
-- 
International AVS Center
North Carolina Supercomputing Center
avs@ncsc.org
Newsgroups: comp.graphics.avs
From: rhoades@ll.mit.edu (Captain Chaos)
Subject: Re: AVS and chemistry
Organization: MIT Lincoln Laboratory
Date: Thu, 19 Nov 92 17:30:15 GMT

I don't think IDL is an IBM product (though perhaps it is available on IBM
platforms:  there are PC, VMS, and Unix versions).  I think it is a product
from Research Systems, Inc. (RSI) originally, and I know they still market
the product.  In addition, IMSL markets IMSL/IDL, which is a combination
of IDL and some of IMSL's subroutine libraries (which IMSL will tell you
are more robust and full featured than those which come with IDL).  I've
also been told that PV-Wave syntax is nearly identical to IDL (perhaps
PV-Wave is closer to AVS than is IDL or IMSL/IDL).

Having used AVS some and IDL a little, I'd say they are pretty different
even if you can do some of the same things with them.  AVS has a rather
different approach from IDL's command line format, and IDL seems more
scientifically aimed with more functionality built in.

For chemistry, if crunching numbers and looking at results is the aim,
AVS may not have the scientific functions you want (of course you can
write your own or pull in some from a library).  If visualizing numbers
is the aim, maybe IDL won't have the flexibility that you want and AVS
is better.  There are a dozen or more modules that came with our DEC AVS 4
specifically for chemistry application, with their own data types and
everything.  These might do what you want right out of the box.

Andrew
rhoades@ll.mit.edu

Newsgroups: comp.graphics.avs
From: hsu@crl.dec.com (William Hsu)
Subject: Re: Custom User Interface to AVS
Organization: DEC Cambridge Research Lab
Date: Wed, 18 Nov 1992 17:51:59 GMT

In article <00963C07.AAF4B580@MEAVAX.NRRC.NCSU.EDU>, wang@MEAVAX.NRRC.NCSU.EDU writes:
> Bill Hsu:
(please call me William)
> 
> I am interesting in what Jeff Saltz did (to plug a different user interface
> to avs. Would you please give more detail information?

I don't know the exact details, write him at saltz@decprl.dec.com. But,
basically what he did was to write the entire non-graphics interface using
Motif, not any of the AVS stuff. He does, however, use the AVS geometry
functionality to render and display the geometry. The window is mapped to a
Motif window that he creates.
 
William
From: tboomgaa@brutus.ct.gmr.com (Thomas Boomgaard CT90)
Newsgroups: comp.graphics.avs
Subject: 2D Vectors
Date: 20 Nov 92 18:29:18 GMT
Reply-To: tboomgaa@brutus.ct.gmr.com (Thomas Boomgaard CT90)
Organization: Electronic Data Systems

I have a dataset with 2D coordinate values and 2D vector values.  Is there any
way to plot these vectors?

Thanks,

Tom
--
Thomas Boomgaard 		General Motors Research Laboratories
tboomgaa@homer.ct.gmr.com		
Disclaimer:  Anything I say is, of course, my own opinion and does not 
represent General Motors Research Labs.
Newsgroups: comp.graphics.avs
From: avs@ncsc.org (Terry Myerson)
Subject: New module at IAC
Organization: North Carolina Supercomputing Center
Date: Mon, 16 Nov 1992 22:54:10 GMT

Name        : string_to_file  Version      : 1.000     Mod Number : 1561 
Author      : Ian Curington, Advanced Visual Systems
Submitted   : 11/16/92        Last Updated : 11/16/92  Language   : C        
Ported to   : DEC Convex HP IBM
Description : Sends the contents of the string input port to an output
              file, opened with a file browser. The string can replace the
              current contents of the file, or be appended to the file
              since opened during the session, as a log of strings in the
              network, controlled by a mode toggle. This is designed to be
              used to send command strings via a named pipe (see mknod
              pipe.file p) to another application program, where
              command input has been redirected to the same pipe. This
              allows an AVS user interface modules to control an external
              command-line driven application.
-- 
International AVS Center
North Carolina Supercomputing Center
avs@ncsc.org
Newsgroups: comp.graphics.avs
From: wang@MEAVAX.NRRC.NCSU.EDU
Subject: Re: Custom User Interface to AVS
Reply-To: wang@MEAVAX.NRRC.NCSU.EDU
Organization: North Carolina State University
Date: Tue, 17 Nov 1992 18:50:13 GMT

Bill Hsu:

I am interesting in what Jeff Saltz did (to plug a different user interface
to avs. Would you please give more detail information?

Thanks

Jeff
Newsgroups: comp.graphics.avs
From: avs@ncsc.org (Terry Myerson)
Subject: New module at IAC
Organization: North Carolina Supercomputing Center
Date: Mon, 16 Nov 1992 18:29:39 GMT

Name        : complex_math    Version      : 1.000     Mod Number : 1558 
Author      : Earl W. Hood, Convex Computer Corporation
Submitted   : 11/16/92        Last Updated : 11/16/92  Language   : C        
Ported to   : Convex IBM
Description : The complex_math module performs binary math operations
              on 2-vector fields that represent complex numbers. The
              first vector component represents the real part of the
              complex number. The second vector component represents
              the imaginary part of the complex number.
-- 
International AVS Center
North Carolina Supercomputing Center
avs@ncsc.org
Newsgroups: comp.graphics.avs
From: thorpe@doppler.ncsc.org (Steve Thorpe)
Subject: Re: anon ftp sites ????
Organization: North Carolina Supercomputing Center
Date: Thu, 19 Nov 1992 00:06:51 GMT

In article <1992Nov18.193825.10106@ncsu.edu> ffhoust@eos.ncsu.edu (FORREST FRANCI HOUSTON) writes:
>I'm sure that this is a FAQ and I apologize for wasting bandwidth
>but I just starting reading this group today and I need an answer
>to this question quick (within the next couple of days).  
>
>In one of the classes I'm taking we just started using AVS (the class
>is an introductory course to scientific visualization) and I was
>wondering where I could find other networks and information on 
>other modules.
>
>Thanks
>Forrest 
>
Hi Forrest and other AVSers,

You can find us at avs.ncsc.org, 128.109.178.23

Let us know if you have any problems or questions for the 
International AVS Center (IAC) via email to avs@ncsc.org

Send any email message to avsemail@ncsc.org to receive an automated
reply, including the latest module catalog, IAC info, an a form
for registering for the International AVS User Group and other groups.

Also... please submit articles and/or slides for our quarterly 
magazine AVS Network News to us at the address listed below.

Thanks!

-Steve
----------------------------------------------------------------
   Steve Thorpe, Application Visualization System Specialist
International AVS Center, North Carolina Supercomputing Center
PO Box 12889   3021 Cornwallis Rd, RTP, NC 27709   avs@ncsc.org
----------------------------------------------------------------
From: balducci@phenyl.phr.utexas.edu (Renzo Balducci)
Newsgroups: comp.graphics.avs
Subject: Re: AVS chemistry-viewer
Date: 19 Nov 92 22:54:11 GMT
Organization: Univ of Texas - College of Pharmacy

In article <1992Nov13.084402.11388@phys-chemie.uni-wuerzburg.dbp.de>, harry@phys-chemie.uni-wuerzburg.dbp.de (Harald Lanig) writes:
 |
 |Fellow Netters,
 |
 |can anyone out there give me information about the AVS-Chemistry-Viewer?
 |I am doing semi-empirical calulations on a SUN Sparc2 using OW3.0 
 |and SUNOS 4.1.1.
 |I am also interested hearing about the features (and the costs) of this 
 |program. Any information is greatly welcome.
 |Please reply on the net or directly to me.
 |
 |Thanks in advance
 |
 |-Harald.
 |
 |---------------------------------------------------------------
 |Harald Lanig                 Institut fuer Physikalische Chemie
 |                             Marcusstr. 9-11
 |phone: +49(0)931-31-510      8700 Wuerzburg
 |  fax: +49(0)931-57-849      Germany
 |email: harry@phys-chemie.uni-wuerzburg.dbp.de
 |---------------------------------------------------------------

I'm also very interested to this information and/or any other info on
chemically related AVS software.
	Thanks.

-- 
-----------------------------------------------------------------------
Dr. Renzo Balducci			balducci@phenyl.phr.utexas.edu
System Manager				balducci@vax.phr.utexas.edu
College of Pharmacy			balducci@ccwf.cc.utexas.edu 
Univ. of Texas -- Austin, TX 78712	PHR2.210 --- (512)471-4809
-----------------------------------------------------------------------

Newsgroups: comp.graphics.avs
From: smitty@dsd.es.com (Maurice Smith)
Subject: Re: Wanted: Geodesic Dome co-ordinates,geom's
Keywords: data
Reply-To: smitty@dsd.es.com
Organization: Evans & Sutherland Computer Corp., Salt Lake City, UT
Distribution: usa
Date: Fri, 20 Nov 92 16:41:28 GMT

In article <8696@lee.SEAS.UCLA.EDU>, craig@hyperion.loni.ucla.edu writes:
> 
> 	The subject line pretty much says it; Has anyone a representation
> 	of a geodesic dome - or , even better, a means of generating
> 	the vertex co-ordinates ??
> 
> 	thanks
> 
> 		Craig
> 
> 		craig@hyperion.loni.ucla.edu
> 
> 
> 
> 

Go to the library, checkout a couple of Buckmister Fullers books.  They
will tell you how to generate a dome and more.
-- 
======================================================================
 Smitty (Maurice Smith)            | SOMEONE YOU TRUST IS ONE OF US.
 smitty@dsd.es.com  (use it!)      | SOMEONE YOU TRUST IS ONE OF THEM.
 Evans & Sutherland Computer Corp. | Offend someone, eat a hotdog on Friday.
 Salt Lake City, Utah              |  #include <standard_disclaimer>


Newsgroups: comp.graphics.avs
From: avs@ncsc.org (Terry Myerson)
Subject: New module at IAC
Organization: North Carolina Supercomputing Center
Date: Mon, 16 Nov 1992 18:36:00 GMT

Name        : exponential     Version      : 1.000     Mod Number : 1559 
Author      : Earl W. Hood, Convex Computer Corporation
Submitted   : 11/16/92        Last Updated : 11/16/92  Language   : C        
Ported to   : Convex IBM
Description : The exponential filter module computes 'e' raised to each
              field value, i.e. newvalue = e^value
-- 
International AVS Center
North Carolina Supercomputing Center
avs@ncsc.org
From: txn@sirius.larc.nasa.gov (Troung Nguyen)
Newsgroups: comp.graphics.avs
Subject: Novice AVS user needs advise. Please help!!
Date: 18 Nov 1992 22:06:24 GMT
Organization: NASA Langley Research Center, Hampton, VA  USA
Distribution: world
NNTP-Posting-Host: sirius.larc.nasa.gov


 Hi, I am new to this group and AVS.  I need some advise on the simple 
 problem below.

 I am having trouble passing parameters "min_ext" and "max_ext"
 from module "read field" to "field to mesh" in the network below


	   |Read Field|
		|
		|
		|
	   |Field to Mesh|	 |Generate Axes|
		|			|
		|------------------------
		|
	   |Geometry Viewer|

 
 What I was trying to do is to display 2d uniform field 
 between min_ext and max_ext (both x and y) so that I can superimpose 
 another geometry on top later on.

 What I got was a  mesh spaced between 0 and 120  instead of 
 between min_ext and max_ext in both x and y directions. 
 So, the question is how to display the mesh correctly between
 the min and max specified.

 I prefer not having to generate the xy coordinate points for 
 each grid point, the field is uniformly spaced.  And module
 "volume bounds" is not compatible with the 2d field.

 Thank you very much for responding. Please response via email.
 I use AVS Release 4 on a Sun if it matters.# AVS field file
# this is a header file for a field to be
# used in conjunction with the  build a field module of AVS
#
ndim = 2
dim1 = 121
dim2 = 121
nspace = 2
veclen = 1
data = float
field = uniform
min_ext = -.762  -.762
max_ext =  .762   .762
label = normalized_RCS

variable 1 file=./almond.dat filetype=ascii skip=3


 Truong Nguyen
 txn@radar0.larc.nasa.gov

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

 PS: Below is the field file to read the data. 

# AVS field file
# this is a header file for a field to be
# used in conjunction with the  build a field module of AVS
#
ndim = 2
dim1 = 121
dim2 = 121
nspace = 2
veclen = 1
data = float
field = uniform
min_ext = -.762  -.762
max_ext =  .762   .762
label = normalized_data

variable 1 file=./almond.dat filetype=ascii skip=3
^L^L

___end of field file-------
Newsgroups: comp.graphics.avs
From: avs@ncsc.org (Terry Myerson)
Subject: New module at IAC
Organization: North Carolina Supercomputing Center
Date: Mon, 16 Nov 1992 18:41:45 GMT

Name        : natural_log     Version      : 1.000     Mod Number : 1560 
Author      : Earl W. Hood, Convex Computer Corporation
Submitted   : 11/16/92        Last Updated : 11/16/92  Language   : C        
Ported to   : Convex IBM
Description : The natural log filter module computes log base e of a real
              field, i.e. newvalue = LOG e (value)
-- 
International AVS Center
North Carolina Supercomputing Center
avs@ncsc.org
Xref: sparky comp.graphics.avs:926 comp.graphics:12011 comp.graphics.visualization:1780 alt.3d:1518
From: roberts@eniac.seas.upenn.edu (If I only had a job...)
Newsgroups: comp.graphics.avs,comp.graphics,comp.graphics.visualization,alt.3d
Subject: Help needed involving 3-d reconstruction of surfaces from contours
Keywords: Smoothing algorithm needed...
Date: 18 Nov 92 04:05:48 GMT
Followup-To: comp.graphics.avs
Organization: University of Pennsylvania


  I am looking for some help.  I am working in the Peter Sterling
Retina Laboratory on the University of Pennsylvania Campus.  Our group
takes serial slices of the retina which consist of digitized points.
These points on the planar contours are then used by a triangular mesh
algorithm to reconstruct the entire neuron in three space.  The
problem is that some slices do not line up correctly.  Also, slices 
do not contain the same number of digitized points.  Therefore, the 
triangular mesh algorithm will incorrectly construct the
three-dimensional neuron.  In fact, the reconstructed neuron looks 
twisted.  I would like to know if some smoothing algorithm exists 
to remove the striated appearance of the newly constructed neuron.

  Volume 11 of the ACM Transactions on Graphics (July 1992) has an
article entitled "Surfaces from Contours" by David Meyers and Shelley
Skinner of the University of Washington and Ken Sloan of the
University of Alabama at Birmingham that pretty much describes what we
are doing.  On page 255 the group mentions that an optimal surface
fitter would involve a fitter which produces a stream of Bezier
patches from the input mesh, a tessellator which samples Bezier
patches and produces a number of planar triangles that approximate
each surface patch, a colorer, and a renderer which takes the final
triangles produced by the colorer and produces a final image.

  I am trying to contact the group to find out more about what they have
done.  I would like to know if anyone out there in graphics land knows
of any other work that has been done on surface fitting or smoothing
algorithms specifically for triangular mesh 3-D reconstruction.  I
would also like to know if anyone has used the Meyers, Skinner, and
Sloan method at all involving Bezier patches.

  Please, the smallest lead is greatly appreciated.  Please contact me
via e-mail at roberts@eniac.seas.upenn.edu.  Thank you for your time
and your help.  Shawn Roberts





--
Shawn A. Roberts (roberts@eniac.seas.upenn.edu) | "...I was lined up
University of Pennsylvania CSE '93              |  for glory, but the
Dining Philosophers Computer Science Group VP   |  tickets sold out in
ACACIA International Fraternity Brother         |  advance..." -Neil Peart
Newsgroups: comp.graphics.avs
From: avs@ncsc.org (Terry Myerson)
Subject: New module at IAC
Organization: North Carolina Supercomputing Center
Date: Mon, 16 Nov 1992 18:24:57 GMT

Name        : luminence       Version      : 1.000     Mod Number : 1557 
Author      : Earl W. Hood, Convex Computer Corporation
Submitted   : 11/16/92        Last Updated : 11/16/92  Language   : C        
Ported to   : Convex IBM
Description : Luminence computes the luminence of an image. However, it
              differs from the standard AVS luminence module in that one
              can control how much red, green, and blue contribute to the
              brightness of an image. I found this functionality useful
              when using the module with the replace_alpha and composite
              modules (eg. I can make any color with red be fully opaque
              while other colors are transparent).
-- 
International AVS Center
North Carolina Supercomputing Center
avs@ncsc.org
From: schiano@vega.acs.uci.edu (Allen V. Schiano)
Subject: (none)
Newsgroups: comp.graphics.avs
Reply-To: schiano@vega.acs.uci.edu (Allen V. Schiano)
Organization: University of California, Irvine
Date: 17 Nov 92 19:27:33 GMT

Hello AVS people!

	I'm relaying this request from a user who doesn't have Internet
access yet.  The question is:  does anyone have an AVS (or X-based) module
or tool that allows one to outline and area in an AVS or X image?  The
outlining should be done using the mouse with the result that the outlined
region is all that is left after the procedure (everthing else set to a default
value or color).  This is a common labor-intensive technique in medical
visualization but doesn't seem to have been incorporated into common AVS use.
Given the probable general interest in this to others, please post a response 
to this inquiry on this bulletin board.

Allen Schiano
Office of Academic Computing
University of California, Irvine
Irvine, CA
schiano@uci.edu
Newsgroups: comp.graphics.avs
From: avs@ncsc.org (Terry Myerson)
Subject: New module at IAC
Organization: North Carolina Supercomputing Center
Date: Mon, 16 Nov 1992 18:02:07 GMT

Name        : extrude_field   Version      : 1.000     Mod Number : 1555 
Author      : Earl W. Hood, Convex Computer Corporation
Submitted   : 11/16/92        Last Updated : 11/16/92  Language   : C        
Ported to   : Convex HP IBM
Description : Extrude field generates a 3D volume by applying a
              transformation matrix defined by the parameters to a 2D
              field. i.e. it "sweeps" a 2D field through 3-space to
              generate a 3D (irreguler) field. There were some
              researchers who had data sets that represented a slice of
              something axisymetric in 3-space. With extrude_field,
              one can recreate the 3D representation. This is also good
              for people who have 2D data sets, but the modules that they
              would like to use only accept 3D data sets.
-- 
International AVS Center
North Carolina Supercomputing Center
avs@ncsc.org
Newsgroups: comp.graphics.avs
From: ffhoust@eos.ncsu.edu (FORREST FRANCI HOUSTON)
Subject: anon ftp sites ????
Organization: North Carolina State University
Date: Wed, 18 Nov 1992 19:38:25 GMT

I'm sure that this is a FAQ and I apologize for wasting bandwidth
but I just starting reading this group today and I need an answer
to this question quick (within the next couple of days).  

In one of the classes I'm taking we just started using AVS (the class
is an introductory course to scientific visualization) and I was
wondering where I could find other networks and information on 
other modules.

Thanks
Forrest 

Xref: sparky comp.graphics.avs:939 comp.graphics.visualization:1790
From: craig@hyperion.loni.ucla.edu
Newsgroups: comp.graphics.avs,comp.graphics.visualization
Subject: Wanted: Geodesic Dome co-ordinates,geom's
Keywords: data
Date: 19 Nov 92 19:13:10 GMT
Followup-To: comp.graphics.avs
Distribution: usa
Organization: /data/local/lib/news/organization


	The subject line pretty much says it; Has anyone a representation
	of a geodesic dome - or , even better, a means of generating
	the vertex co-ordinates ??

	thanks

		Craig

		craig@hyperion.loni.ucla.edu




Newsgroups: comp.graphics.avs,comp.graphics.visualization