Question about converting velocities DCD to ascii plain text

From: Joe Janicki (
Date: Sat Aug 03 2013 - 13:24:11 CDT


I am interested in obtaining the velocities for each atom in my system.

I used the velDCDfile option in the configuration file and saved the
velocities at every step. My simulation ran, and I obtained an output file
with the velocities, saved in the binary DCD format.

I used "binaryoutput no" in the configuration file, but that appears to
only work on the final output.

Is there a way to convert this binary velocity DCD to text? I saw that
there was a flipbinpdb program, but I'm not sure how to use it/if it will
help me with what I'm trying to do. I essentially want a plain text file
with all of the velocities printed out which can be read into a program I
have written (the details of which are not important).


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