[Chimera-users] scaling models

Elaine Meng meng at cgl.ucsf.edu
Sat Dec 12 07:30:17 PST 2020

Hi Rani,
There was an experimental command "setzoom" available as a separate zip file from 2006.  Although the "window" command has been included in the standard Chimera, the "setzoom" command is not.  You could try installing that zip file but I don't know if it works with current Chimera.  For the zip file and link to details of the command and installation, search for "Set Magnification and Window Size" in this page:

Another possibility is to use ChimeraX instead of Chimera.  ChimeraX has a command option to scale pixel size in length units:

“zoom" command “pixelSize” option

I hope this helps,
Elaine C. Meng, Ph.D.                       
UCSF Chimera(X) team
Department of Pharmaceutical Chemistry
University of California, San Francisco

> On Dec 12, 2020, at 1:25 AM, Rani Wiswedel <wswran001 at myuct.ac.za> wrote:
> Good day,
> Is there any way to ensure that the scale you are looking at is kept constant when taking images of different models? I would like to include photos of pores  from my structure, but each pore is saved in a different file, so I have to re-open Chimera and adjust the view each time. I have the scale bar open and the projection set to orthographic, but I am struggling to manually adjust the view so that the scale bar looks the same length in each picture (attached below is my manual attempt (pic1)). Is there any way to set the scale each time chimera is opened so that I don't end up with pictures that have scale bars that appear to be different sizes?(example of what I would like to achieve is in the second image(pic2))
> Thank you!
> Regards,
> Rani

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