For those interested, I have added an example of how to add a user plot command to FEAP to my FEAP page.
The example concerns adding a feature to plot heat-flux vectors to a plot.
See: http://www.ce.berkeley.edu/~sanjay/FEAP/feap.html and in particular http://www.ce.berkeley.edu/~sanjay/FEAP/flux.html
Thanks for the sharing, Professor Govindjee.
In the uplot1.f, a head file 'eldatp.h' is included which is not contained in FEAP. So I assume it is user-defined. Would you mind also uploading this head file?
Also, 'histpltfl' and 'hplmax' are two logical variables which are not declared. I assume these two global variables are contained in the head file 'eldatp.h'. Where are these two logical variables given the value?
Thanks for your time and effort
Tao