[Chimera-users] volume viewer step value

Elaine Meng meng at cgl.ucsf.edu
Wed Dec 3 10:37:42 PST 2014

Hi Ludo,
There is a setting because opening large data with step 1 might be too much for some computers, but you can change it.

>From the Volume Viewer menu, choose "Features… Data display options” — this will show certain options in the dialog, including “Adjust step to show at most…”  You can turn that option off entirely or leave it on but increase the size limit.  You might also want to adjust the “Show data when opened if smaller than…” setting.

The data display features are described here:

Then to save your settings for later uses of Chimera, from the Volume Viewer menu choose “Features… Save default dialog settings”.   For more details, see the Features section of:

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

On Dec 3, 2014, at 3:02 AM, Ludovic Renault <llrrenault at gmail.com> wrote:

> Hi,
> When I load different EM volumes into Chimera, depending on the size of the box the display step value changes from 1 to 4.
> Is it possible to force chimera to always load the 3d map with a step value of 1?
> Or at least change some parameters in preferences to have step 1 loaded with my routine volumes (up to 300 pixel boxes for example).
> Thanks,
> Ludo

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