From: Brian Radak (
Date: Thu Dec 01 2016 - 14:05:28 CST

Apologies if this is a repeat.

I am trying to make use of the "user" field in having a dynamic
representation that changes at each time step. This is just a simple
boolean that turns off or on a small set of atoms as part of a larger

How does one assign a time series to the user field? For each atom I
have a Tcl list with size equal to the number of DCD frames, but the
following does not seem to work:

% set myProperty <list of size equal to numframes>
% set sel [atomselect <selection for a single atom>]
% $sel set user $myProperty

Is "user" not a time dependent property by default? The help message for
"atomselection set" does not seem to indicate any further keywords to
flag that.


Brian Radak
Postdoctoral Appointee
Leadership Computing Facility
Argonne National Laboratory
9700 South Cass Avenue, Bldg. 240
Argonne, IL 60439-4854
(630) 252-8643