[Chimera-users] Drawing arrows without using .bild file

Elaine Meng meng at cgl.ucsf.edu
Tue Feb 21 09:30:30 PST 2012

Hi Victor!
A couple of comments, not really answering your question... perhaps others will have more direct suggestions about what is easy to program:

(A) in version 1.6 the shape command includes "cone," so you can make 3D arrows from a cylinder and a cone:

(B) more generally, with the 2dlabels command you can make 2D arrows and then change their locations without recreating them... however, that  doesn't solve your problem because you need 3D arrows

Elaine C. Meng, Ph.D. 
UCSF Computer Graphics Lab (Chimera team) and Babbitt Lab
Department of Pharmaceutical Chemistry
University of California, San Francisco

On Feb 21, 2012, at 9:08 AM, Victor Muñoz wrote:

> Dear all,
> I'm trying to make a script that draws an arrow on every atom and every frame during a trajectory using the MD movie. Right now, the script creates a .bild file to draw the arrows, but it is not a very good approach since it is creating a new file for every frame of the trajectory. I was wondering if there's a way to do the same thing without having to create the .bild file. 
> I already checked the "shape" command but you can´t use it to draw an arrow. Maybe I should make a combination between a cylinder and a rectangle to draw an arrow? Is there any other easy way to do that?
> Thanks in advance. Kind regards,

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