From: Aris Marcolongo (
Date: Mon Oct 26 2015 - 06:02:27 CDT


  I am trying to use this script:

for visualizing the trajectory of a single atom with VMD,
here with index 59. I am a beginner with VMD, and I just wrote in
the TkC console:

> source traj.tcl
> set crystal [atomselect top "index 59"]
> traj $crystal scale

but I finally end up with the error.

Illegal molecule specification 'index 59': Could not
find molecule 'index 59'. mol new operates on one molecule only

How can I solve this problem?

      Thanks a lot for any help,