-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Hello Vitaly--

> I have a somewhat naive question: is it possible to toggle the display of the
>  molecule during the simulated annealing?
> 
> Certainly the efficiency will suffer, but I am looking for a way to
> introduce
>  the students to structure calculations. I vaguely recall that such
>  display w
> as used in Dynamo from NMRPipe package, but maybe I am mistaken on this.

It is possible to visualize a molecular structure during structure
determination. It's not so much toggling, however.

In the Python interface:

1) Make this modification:
 (documented here:
   http://nmr.cit.nih.gov/xplor-nih/doc/current/python/ref/vmdInter.html)

  after loading PSF info:

from vmdInter import VMDInter, VMDTraj
vmd=VMDInter()
vobj=vmd.makeObj("struct")                  #creates a new VMD molecule
                                            # named ``struct''
vobj.bonds("name C or name N or name CA")   #draw backbone atoms

  then, for each IVM object add a line

ivm.setTrajectory( VMDTraj(vobj,saveInterval=100) )

you may wish to make saveInterval smaller.

2) then, with a running VMD-XPLOR instance, 

  a) run the python script within the XPLOR window, using

     pyth
     execfile('script.py')

   or

  b) using an external instance of Xplor-NIH, run the script, adding
     -port <num> -host <name> 
     parameters to the command-line. The host is the hostname of the
     machine where VMD-XPLOR is running, and the port number can be
     found out from the running VMD-XPLOR instance using
     Control -> Info


It is not yet possible to directly generate a trajectory file from the
IVM, although this is possible using the old XPLOR interface.

best regards--
Charles
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.10 (GNU/Linux)
Comment: Processed by Mailcrypt 3.5.8+ <http://mailcrypt.sourceforge.net/>

iEYEARECAAYFAktE2GgACgkQPK2zrJwS/lZskgCeKlwrQaUr4MmhC8tRrdLozTF+
VKIAn1x5gR/RW7UGshYFhZTxF23UCW31
=g5pc
-----END PGP SIGNATURE-----

Reply via email to