44 lines
1.9 KiB
Plaintext
44 lines
1.9 KiB
Plaintext
This code is essentially XGraph release 11.4, with some modifications
|
|
which were made for use by the NCSA Relativity group.
|
|
These modifications were made by Paul Walker, and he should be
|
|
contacted at the below address if you have any problems/questions
|
|
regarding these features.
|
|
|
|
1. Animation. XGraph will now do a *very* crude animation of
|
|
your data sets. It occasionally has problems with refreshes
|
|
and will consequently run your animation three of four times.
|
|
Consider this an undocumented feature! You can adjust the
|
|
speed of the animation with the -dl option. I find "2" works
|
|
well on a sparc displaying on MacX, "5" on a sparc on its
|
|
own display, and "10" on an SGI or RS6K on its own display.
|
|
Remeber, this animation is not being advertised as anything
|
|
other than very crude, so if you are looking for production
|
|
quality video, turn elsewhere. We find it useful as it will
|
|
quickly generate animation which shows time evolution.
|
|
|
|
2. Differentation. You can press the "Derivative" button to
|
|
see the first and second derivatives of your data set. The
|
|
method is a standard centered difference. You cannot display
|
|
higher than second derivatives. Animation, zooming, etc...
|
|
work in each of the derivative windows. Endpoints are found
|
|
linearly interpolating inner values to ends, so pay them
|
|
little heed!
|
|
|
|
3. New Color Map. We couldn't differentiate the colors once we
|
|
got past yellow, so we created a new color map. If you don't
|
|
like it, look in init.c for the variable "defColors" and
|
|
comment out the new one, replacing it with the commented
|
|
old one. Of course, you are free to insert your own choices
|
|
here also ... Just use standard X color names.
|
|
|
|
|
|
These modifications were made by Paul Walker, and distributed with the
|
|
Original author's consent. See Copyright.h for information about
|
|
distribution and ownership of these changes. Contact Paul Walker at
|
|
|
|
Paul Walker
|
|
NCSA
|
|
605 E. Springfield Ave
|
|
Champaign IL 61820
|
|
pwalker@ncsa.uiuc.edu
|