Article View: comp.graphics.explorer
Article #151Available Modules
From: Gordon Cameron
Date: Thu, 08 Oct 1992 15:50
Date: Thu, 08 Oct 1992 15:50
664 lines
24299 bytes
24299 bytes
Hi folks,
After questions on availability of modules, below is a list of all modules
available via. anon ftp from both ftp.epcc.ed.ac.uk and swedishchef.lerc.nasa.gov
In addition, the /unsupported directory at swedishchef has all the stuff on the
CD distributed by SGI at SIGGRAPH - there is quite a bit of overlap. ( The
README file from the CD is included at the foot of this article)
Its probably fair to say that the FTP situation is in a bit of a state of flux,
but this will get cleaned up soon - sorry for any inconvenience.
(To those who know about all this already, apologies for wasting bandwidth...#:-)
-Gordon...
oOo Index to Modules available by FTP oOo
=-=-=-=-=-=-==-=-=-=-=-=-=-=-=-=--=-=-=-=
To grab any of the following modules, change to the relevant directory,
and `get' the compressed tar file that you find there. This will contain
all the information needed to execute the module.
Where noted below, source code is included. The format for entries is:
======================================================================
MODULE DIRECTORY
Author(s) : <Author(s)>
Module(s) : <Name> [Module|Scribe]
Format : [Source|Binary]
Short Description :
======================================================================
----------------------------------------------------------------------
AnimFile
Author(s) : Drew Whitehouse
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Module : AnimFile [Module]
Format : Source
Description :
Generate sequences of filenames , using two strings and
an integer. Has 6 different styles. Generally used
like :
Timer---->AnimFile------>ReadImg
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
----------------------------------------------------------------------
Audio_Modules
Author(s) : SGI
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Module : AudioIn [Module]
Format : SGI Binary (+ some source)
Description :
This module samples the audio input and outputs a
uniform lattice outputs a uniform lattice. The data
is sampled in stereo mode with a 16-bit data range.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Module : AudioOut [Module]
Format : SGI Binary (+ some source)
Description :
This module plays a lattice on the audio output port.
If the input lattice has 2 channels, then it
plays in stereo. Otherwise, it plays in mono. The
lattice stores the time in the coordiantes, so
the recoreded frequency can be determined.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Module : ReadAIFF [Module]
Format : SGI Binary (+ some source)
Description :
This module reads AIFF formatted audio files and
generates a uniform lattice.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Module : WriteAIFF [Module]
Format : SGI Binary (+ some source)
Description :
This module reads a uniform lattice and writes
AIFF formatted audio files.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
----------------------------------------------------------------------
Axis
Author(s) : Rob DeMillo
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Module : Axis [Module]
Format : Source
Description :
"Axis" will annotate a geometric, rendered image that
was constructed from an Explorer 3D Uniform Lattice.
The user has control over the axes that are displayed,
as well as textual information such as axis labels, tic
labels and an image title. This module is meant to be
used in conjunction with the "Render" module, since all
of its output is in the geometric data set.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
----------------------------------------------------------------------
Cartog
Author(s) : Jim Phillips (Minnesota Supercomputer Institute)
Description:
This directory holds a number of Explorer modules
written by Jim Phillips which are useful in visualizing
any data that has to do with the earth.
WorldMap: Reads the CIA map database and sends it
along as a pyramid lattice. We have also added a map
for plate boundaries. (Useful for Geology and
Geophysics.)
Projector: Takes lattices and pyramids and warps them
onto a number of map projections including mercator,
Globe and many others.
Bendbox: Creates a bounding box of a size specified by
the user. Also displays tickmarks and ticklines.
Elevation: Reads an elevation file for the Earth and
sends it along to be displaced and rendered.
SimpleSphere: Draws a sphere at a specified size.
Used so that the backside of a map isn't seen when
displayed on a sphere.
All of the modules come with example maps which
will also be distributed.
----------------------------------------------------------------------
CentreRot
Author(s) : Dana Haukoos (SDSC)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Module : CentreRot [Module]
Format : SGI Binary
Description :
CenterRot creates a transformation matrix that is
useful as an input to the optional Transform
lattice input of the Render module. It provides
capabilities similar to TransfomGen except all
inputs can be controled numerically. It was created to
overcome the problem of not being able to save the
transformation state of the Render module.
The rotation follows the roll (X), pitch (Y), and
yaw (Z) convention. By default, the center of rotation
is the origin or lower left of the lattice. The
CtrX, CtrY, and CtrZ inputs allow the user to
choose another point to rotate about (for example, the
center of the lattice).
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
----------------------------------------------------------------------
ChannelAnimate
Author(s) : SGI
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Module : ChannelAnimate [Module]
Format : SGI Binary
Description :
ChannelAnimate selects a single channel from a
vector lattice and outputs it as a scalar lattice.
If desired, ChannelAnimate will walk sequentially down
each channel in the input lattice and output
each as a separate scalar lattice in an animation
fasion.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
----------------------------------------------------------------------
ChannelMerge
Author(s) : SGI
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Module : ChannelMerge [Module]
Format : SGI Binary
Description :
ChannelMerge will take data from up to five scalar or
vector lattices and merge the data portions of each
into a single vector lattice
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
----------------------------------------------------------------------
ChannelSelect
Author(s) : SGI
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Module : ChannelSelect [Module]
Format : SGI Binary
Description :
This module takes a lattice with many data
variables and splits out one of the data variables.
This module is useful extracting a single data variable
to be used in a downstream module.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
----------------------------------------------------------------------
ColorXform
Author(s) : SGI
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Module : ColorXform [LatFunction]
Format : Source
Description :
Creates a gray-scale image from an RGB image. The
intensity is the linear combination of the R, G, and B
channels scaled by the transform scalars. Before
output, the intensity is scaled to [0...255]. Can
be used to replace the LatFunction module in the
color-xform sample map.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
----------------------------------------------------------------------
Datascribe_Examples
Author(s) : SGI
----------------------------------------------------------------------
dsChannelSelect
Author(s) : SGI
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Module : dsChannelSelect [Scribe]
Format : Source
Description :
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
----------------------------------------------------------------------
Heat_flux
Author(s) : SGI
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Module : HeatFlux [LatFunction]
Format : Source
Description :
Simulates heat flow by using a forward difference
time integration with a standard five-point
Laplacian stencil.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
----------------------------------------------------------------------
ImageVision_example
Author(s) : SGI
----------------------------------------------------------------------
ImportImage
Author(s) : Drew Whitehouse
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Module : ImportImage [Module]
Format : SGI Binary (+some source)
Description :
Imports images of various formats and outputs them as
an explorer image lattice.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
----------------------------------------------------------------------
IsosurfaceLat2
Author(s) : SGI
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Module : IsosurfaceLat2 [Module]
Format : SGI Binary
Description :
Extended/fixed version of original
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
----------------------------------------------------------------------
IsosurfacePyr2
Author(s) : SGI
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Module : IsosurfacePyr2 [Module]
Format : SGI Binary
Description :
Extended/fixed version of original
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
----------------------------------------------------------------------
LatFunction2
Author(s) : SGI
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Module : Latfunction2 [Module]
Format : SGI Binary
Description :
Extended/fixed version of original
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
----------------------------------------------------------------------
LatGplot
Author(s) : Robert van Liere
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Module : LatGplot [Module]
Format : Source
Description :
LatGplot is an Explorer module that acts as a wrapper
around the GNUPLOT interpreter.
LatGplot can optionally be driven by a gnuplot script.
If the script is not provided, LatGplot will use its
default options to draw a plot
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
----------------------------------------------------------------------
LatToGeom2
Author(s) : SGI
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Module : LatToGeom2 [Module]
Format : SGI Binary
Description :
Extended/fixed version of original
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
----------------------------------------------------------------------
LatToSurf
Author(s) : SGI
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Module : LatToSurf [Module]
Format : SGI Binary
Description :
This module generates a lit, solid surface from a 2D
grid.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
----------------------------------------------------------------------
MopacView
Author(s) : SGI
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Module : MopacView [Module]
Format : SGI Binary
Description :
This module reads the MOPAC plot file and
generates a lattice. It is fundamentally and
implementation of the density program.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
----------------------------------------------------------------------
PrimTypeLF
Author(s) : SGI
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Module : PrimTypeLF [LatFunction]
Format : Source
Description :
Sample LatFunction that converts coordinate types
For example, it can convert uniform to curvilinear
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
----------------------------------------------------------------------
PseudocolorImg
Author(s) : SGI
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Module : PseudocolorImg [Module]
Format : SGI Binary
Description :
This module takes a lattice with one data
variable and generates a lattice with RGB stored in
the data section. The colormap is used as a lookup
table for these colors.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
----------------------------------------------------------------------
Read3DCoords
Author(s) : SGI
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Module : Read3DCoords [Scribe]
Format : Source
Description :
The purpose of this modules is to provide an example of
how to read in a set of 3D coordinates as points for
scatter plotting purposes.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
----------------------------------------------------------------------
ReadImages
Author(s) : SGI
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Module : ReadImages [Module]
Format : SGI Binary (+ some source)
Description :
This module will read a series of SGI RGB images and compose a
3D byte lattice out of them.
----------------------------------------------------------------------
ReadMovieBYU
Author(s) : SGI
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Module : readMovieBYU [Module]
Format : SGI Binary
Description :
This module read in Movie.BYU formatted data
files and generates a FEA pyramid.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
----------------------------------------------------------------------
ReadMultiPlot3D
Author(s) : SGI
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Module : ReadMultiPlot3D [Scribe]
Format : Source
Description :
ReadMultiPlot3D will read a multi-blocked Plot3D
file and output each block as a separate lattices
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
----------------------------------------------------------------------
Readsocklat
Author(s) : John Krysynak (NASA Ames Research Centre)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Module : Readsocklat [Module]
Format : Source
Description :
The Readsocklat module reads floating point vectors
from a socket into a lattice. The socket connection is
a TCP/IP coonection based socket. Currently, the
Explorer module establishes a server socket.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
----------------------------------------------------------------------
ReadXplor
Author(s) : SGI
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Module : ReadXplor [Module]
Format : SGI Binary
Description :
This module reads X-PLOR format electron density
maps and generates a volume lattice.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
----------------------------------------------------------------------
RenderRemote
Author(s) : SGI
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Module : RenderRemote [Module]
Format : SGI Binary
Description :
This modules is a complete implementaion of the
Render module for a remote display. This user
chooses the equivalent of the DISPLAY variable and
that is the screen for the Render window
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
----------------------------------------------------------------------
ScaleDelays
Author(s) : SGI
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Module : ScaleDelays [Module]
Format : SGI Binary
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
----------------------------------------------------------------------
SelectChan
Author(s) : SGI
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Module : SelectChan [Module]
Format : SGI Binary
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
----------------------------------------------------------------------
SwitchGeom
Author(s) : SGI
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Module : SwitchGeom [Module]
Format : SGI Binary
Description :
SwitchGeom allows the user to block or process
geometry datatypes. It acts as a valve for passing the
geometry
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
----------------------------------------------------------------------
Streakline
Author(s) : Gary Griffin (SGI)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Module : Streakline [Module]
Format : SGI Binary
Description :
This module calculates a streakline through a velocity
field. It stops when either the new velocity is 0, or
when the streak intersects the bounds of the velocity
field.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
----------------------------------------------------------------------
TestIL
Author(s) : SGI
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Module : TestIL [Module] Format : Source
Description :
An example of using Explorer and ImageVision
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
----------------------------------------------------------------------
ToCoord
Author(s) : SGI
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Module : ToCoord [LatFunction]
Format : Source
Description :
Sample LatFunction module that converts the lattice
data type. For example, byte to long
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
----------------------------------------------------------------------
TriangulateDelauney
Author(s) : SGI
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Module : TriangulateDelauney [Module]
Format : SGI Binary
Description :
Generates a Delauney triangulation from 2 dimensional
data. The output is a pyramid format.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
----------------------------------------------------------------------
Tubes
Author(s) : SGI
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Module : Tubes [Module]
Format : SGI Binary
Description :
This module generates a set of cylinders from a
vector field. The length of the cylinder is
proportional to the magnitude of the vector field, and
its direction indicates the relative magnitude of
each component. The cylinders may also be colored
based upon the information in the optional scalar
field and colormap inputs.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
----------------------------------------------------------------------
Vectors
Author(s) : SGI
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Module : Vectors [Module]
Format : SGI Binary
Description :
This module generates a set of arrows from a vector
field. The length of the arrow is proportional to the
magnitude of the vector field, and its direction
indicates the relative magnitude of each component.
The arrows may also be colored based upon the
information in the optional scalar field and colormap
inputs.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
----------------------------------------------------------------------
WorkBench
Author(s) : Gordon Cameron (EPCC)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Module : WorkBench [Module]
Format : Source
Description :
This module is designed to supply a single number which
can be fed into other modules, such as OrthoSlice as
the slice number. It can usefully used to allow fine
control over numeric parameters - for example, a number
can be single stepped by an EXACT set step in either
direction. This is useful for stepping through values
in an orderly fashion, as the slider widget at present
doesn't allow single precise-stepping. Simply wire the
Current Value outout parameter into any other parameter
that you want to control.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
----------------------------------------------------------------------
=======
SGI CD - available from SGI directly, or via FTP from swedishchef.lerc.nasa.gov
*ONLY*
~~~~~~~~~~~~~~~~~~~
This directory (/unsupported) contains Explorer files that are unsupported.
The basic structure is the same as EXPLORERHOME. A summary of the directories is :
data
lattice data files for the maps provided
misc data files for specific test maps
mopac Input files for MopacView
movieBYU Input files for ReadMovieBYU
scribe Data files for dscribe examples
doc PostScript files for the documentation
modulewriters
usersguide
modules PostScript form of manual pages
latfuncs Input latfunc files for maps provided
man manual pages for modules
maps Test example map for all the new modulesmodules New modules
scribe Example dscribe modules
src Source to some of the modules
ChannelAnimate
ChannelMerge
ChannelSelect
MopacVIew
PseudocolorImg
ReadMovieBYU
ReadXplor
TestIL
Vectors
audio
In addition, we are providing a group of computational fluid dynamics modules
in the directory 'cfd'. These modules are very specific for that market.
There are a few modules that are enhanced versions of existing modules.
All of these modules are appended with the number 2. The enhancements are :
IsosurfaceLat2 Added slider for which variable to color vs surface
IsosurfacePyr2 Added slider for which variable to color vs surface
LatFunction2 Fixed initialization bug
LatToGeom2 Added support for transparency
The following is a list of maps and the modules that they exercise.
Map Modules
aiff ReadAIFF
WriteAiff
audio AudioIn
AudioOut
channel ChannelAnimate
ChannelMerge
colorXform ColorXform
LatFunction2
heatFlux Heat_flux
LatFunction2
LatToGeom2
isosurfacelat IsosurfaceLat2
RenderRemote
SwitchGeom
isosurfacepyr IsosurfacePyr2
mopac MopacView
movie ReadMovieBYU
pseudoColor ChannelSelect
PseudocolorImg
read3D Read3DCoords
testIL TestIL
tornado Tubes
triangulate TriangulateDelauney
xplor ReadXPLOR
cfdExplorer ReadMultiPlot3D
LatToSurf
Vectors
--
e|p Gordon Cameron | Phone:+44 31 650 5024(Rm. 2259)
c|c Edinburgh Parallel Computing Centre | Email: gordonc@epcc.ed.ac.uk
oOo The University of Edinburgh oOo | 'So far so good, so now so what'
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Path: arc1-ca.pugleaf.net!sparky!uunet!mcsun!uknet!edcastle!dcs.ed.ac.uk!epcc.ed.ac.uk!gordonc From: gordonc@epcc.ed.ac.uk (Gordon Cameron) Newsgroups: comp.graphics.explorer Subject: Available Modules Message-ID: <Bvt80t.BA0@dcs.ed.ac.uk> Date: 8 Oct 92 15:50:53 GMT Sender: cnews@dcs.ed.ac.uk (UseNet News Admin) Organization: Edinburgh Parallel Computing Centre Lines: 664