1 XTHING
A Visualization Tool

USAGE

 $ xthing [options] datafile


2 DESCRIPTION
XTHING is a tool I wrote for the use of displaying 3D data in 2D.
Most of the packages we had only displayed in 16 colors, I broke 
that barrior.  XTHING takes a file of data and plots it in n-1
colors where n is the number of colors available on the display.
It compresses points either linearly or logarithmically, displays
the data in color (HSB) or gray scale, zooms, and does period 
repeats of the image.  It also outputs in postscript (which post.c
might be handy for a slew of programs...)

I wrote XTHING on an IBM/RS6000 but have successfully compiled it
with no changes on VAX VMS systems.  Plus (if you have the 
memory) I have plotted over 800,000 points.

Run the program to see what it does.
Use -help for command line options.
See title.h for copyright and such.

2 OPTIONS

Supported options are:
-color              - color shades
-gray               - gray
-linear             - linear plot
-log                - log plot
-numcolors value    - number of colors to use
-help               - this message

2 Author
  John L. Cwikla
  Materials Research Laboratory Center for Computation
  University of Illionois
  1991

