[Chimera-users] using fitmap with per-frame analysis.

Friends, I have a task which is as follows; I have done the simulation of a protein, whose EM map is already available. I want to fit the MD snapshots on to the map and to filter out some best frames based on the overlap statistics. I am aware that chimera does only rigid body fitting. I would like to know, for instance, if I can open the EM-map and the MD traj in Chimera and use per-frame analysis to achieve my goal. Also, i need some way to output/write the fitting statistics (eg. overlap value) to a file so that i can later filter out the best frames based on the statistics. Thank you, Bala C. Balasubramanian