This and other types of important types of MD analysis are are my to-do list, but I really don't have a good idea as to when I'll have time to implement them.  Until then, as Eric Dawson mentioned in his reply, MDdisplay offers this capability.

--Eric

                        Eric Pettersen
                        UCSF Computer Graphics Lab
                        http://www.cgl.ucsf.edu

On Nov 15, 2007, at 8:53 PM, Quinton Dowling wrote:

Hi,
I am interested in creating a ramachandran plot from an md trajectory.
 Particularly I would like to track the change in phi/psi angles over
time for specific amino acids throughout the md in a fashion that is
easily presentable.  Is there a way to do this with Chimera?  Or any
way at all?  Thanks a bunch.

Quinton Dowling
Research Computing Center
The College of Idaho
Caldwell ID 83605
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