[Chimera-users] independent movement

[Elaine Meng]

Hi Michael,
The select/~select command when used only with model numbers serves  
to activate/deactivate models for motion, as described here:
http://www.cgl.ucsf.edu/chimera/docs/UsersGuide/midas/select.html

The move command only moves all the activated models in the same  
direction.
http://www.cgl.ucsf.edu/chimera/docs/UsersGuide/midas/move.html

However, I can think of a couple of ways to make models move in  
opposite directions.

The more general way is to save different positions for the desired  
starting and ending points of the motion (savepos command).  Then the  
reset command with the name of the saved position will move all  
models from current positions to the saved position, optionally over  
some number of frames.
http://www.cgl.ucsf.edu/chimera/docs/UsersGuide/midas/savepos.html
http://www.cgl.ucsf.edu/chimera/docs/UsersGuide/midas/reset.html

The less general way moves multiple copies of the same structure in a  
symmetry-related fashion, slaved to one of the copies.  This is not  
in Chimera, but is an experimental feature available for download  
from here (the very last one on the page):
http://www.cgl.ucsf.edu/chimera/experimental/experimental.html

Also, the select/~select stuff mentioned at the beginning of this  
mail just applies to models.  If you wanted to do that with chains  
within a structure, possibilities are to open each chain from a  
separate file so they are treated as separate models, or try an  
experimental feature (same URL as above) that splits the chains in a  
model into separate models.

I hope this helps,
Elaine
-----
Elaine C. Meng, Ph.D.                          meng at cgl.ucsf.edu
UCSF Computer Graphics Lab and Babbitt Lab
Department of Pharmaceutical Chemistry
University of California, San Francisco
                      http://www.cgl.ucsf.edu/home/meng/index.html

On Mar 8, 2007, at 10:51 PM, michel dedeo wrote:

> I would like to use Chimera to make a movie in which multiple models
> or chains move in different directions simultaneously.  The movie
> illustrating myosin thick filament analysis
> (http://www.cgl.ucsf.edu/chimera/animations/movies/myomovie.mov) is a
> good example.  I am not sure if this post
> (http://www.cgl.ucsf.edu/pipermail/chimera-users/2006-June/ 
> 000843.html)
> on interpolated model motion is relevant, or if the 'movemodel'
> command imagined there actually exists in some patch that I do not
> have.
>
> If that proves too difficult (I have little programming experience) I
> would like to be able to hold one model or chain stationary while
> moving another.  I can do this by using the model panel to make one
> model inactive while entering a movement command to move the active
> models, but I have not found a way to do this through the command
> line.   Is there a command to activate/inactivate models, or another
> way to move some models/chains and not others?
>
> Thank you for your help.
>
> Michel Dedeo
> Francis Lab
> Department of Chemistry
> UC Berkeley
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