Hi Fabrice,
I've attached a Python script below, that you can use in the "Define Script" MD Movie dialog to print any distances you're monitoring to the reply log.  The Reply Log has a Save button which you can use to save the output into a file.

--Eric

                        Eric Pettersen

                        UCSF Computer Graphics Lab

                        http://www.cgl.ucsf.edu



On Feb 24, 2009, at 1:41 AM, fabriceg@univ-reunion.fr wrote:

Dear Users,
When analyzing a trajectory file, I would like to monitor a distance
(or series of distances) and save it to a file for each frame (getting
a time series). I can do it but the values remain on the screen only!
I am sure there is a simple script for making this.
Thanks for any answer.
Best wishes.
Fabriceg