Hi Hira,
As it says on the MD Movie interface, PSF/DCD came from MDTools.  On that interface, "MDTools" is a button which if you had clicked it would have taken you here:

http://www.ks.uiuc.edu/~jim/mdtools/

where you could download MDTools.
Now, some changes and updates were made to make MDTools work in the context of Chimera and with newer types of DCD files.  Chimera's version of MDTools is in <your Chimera installation>/share/Trajectory/DCD/MDToolsMarch97.  In particular, the md_DCD.py file in that directory has several changes.

--Eric

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

(on a Mac, "<your Chimera installation>" will be Chimera.app/Contents/Resources)

On Jul 10, 2013, at 5:48 AM, Syeda Hira Batool <s.hirabatool@ymail.com> wrote:

Hello! I have psf and dcd files.I want to read them using my own script(non-commercial/educational purpose).So I want to know how Chimera reads dcd files.Can you please help me out in this regard by providing me some helping material or a script. 
Thank you

Hira Batool
Student of BS-Bioinformatics
Biosciences Department
COMSATS Institute of Information Technology
Islamabad, PAKISTAN


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