Hi Andrea,
The volume command dataCacheSize option will do this. For example for 32 Gbytes of memory cache for volume data use command
volume dataCacheSize 32000
The default is to set it to half the physical memory of the computer.
https://www.rbvi.ucsf.edu/chimerax/docs/user/commands/volume.html#sampling <https://www.rbvi.ucsf.edu/chimerax/docs/user/commands/volume.html#sampling>
I would not suggest changing it because surface and image rendering typically use an amount memory for the graphics similar to the data size. The cache is only for the volume data, so with graphics, the current setting can utilize all your memory. Increasing it can cause data to be paged out to disk with horrible performance. The above setting is not saved. If you did want to change it for every ChimeraX session you would use Preferences / Startup / Execute these commands at startup.
Tom
> On Mar 3, 2021, at 9:04 AM, Andrea Fera <andrea.fera(a)revealgc.com> wrote:
>
> Dear Mr. Goddard,
>
> This is Andrea. I am not sure that you remember me, but we met in 2013 or so in S. Francisco and Berkeley.
>
> I am a strenuous fan of your software! Especially for volume rendering of cryo-type tomograms.
> I do have a tomogram pf a few Gb that I would like to render with your software. I use a Lynux server with LOTS of RAM. How can I increase the RAM allocated by ChimeraX?
>
> Thank you and all best…
> Andrea Fera
>
> --
> Andrea Fera, PhD
> Senior Data Scientist
> <image003.jpg>
Hi,
I have a bunch of shapes (spheres and cylinders) created through a .bld
script. I'd like to load this script once, and then be able to change the
colors of said shapes in successive operations. It is possible to set the
colors directly in the .bld script, but I need to make an animation out of
this. E.g: if my .bld script contains lines that draws shapes like so:
.sphere 0 0 -1 5.0
.cylinder 0 0 0 1 1 1 1.0
I want to be able to later have a bunch of scripts called 1.cxc, 2.cxc,
3.cxc, .... each of which change the color of the sphere and cylinder. This
way, I can load these scripts in the per-frame mode, to create an animation
out of the color changes.
Alternatively, I tried doing this with just the shape command and without a
.bld script, but I have over ~10000 shapes; the shape command interprets
each as a different model, and my computer hangs.
-----
Thanks,
Tanmoy
Tanmoy Sanyal
Postdoctoral scholar, Sali lab <https://salilab.org/>,
Department of Bioengineering and Therapeutic Sciences
<https://bts.ucsf.edu/>,
University of California San Francisco
Phone:- (+1) 805-637-0375
Hello,
I create molecular animations and use ChimeraX to import PDB files and
convert them to surfaces which I then export for use in Autodesk 3dsmax.
I have a very limited understanding of this fantastic software however I am
wondering if there is a quick way to solve my problem. I have a PDB file I
was sent containing a trimer. When I use a command such as:
*molmap #13,1 20 *(I found this on a YouTube video BTW)
It creates a surface model of the entire PDB file. How do I create separate
surface models for each of the trimers? So the PDB exports with three
meshes as opposed to a single mesh.
Hope that makes sense.
Best regards,
Eoin
*Eoin Winston, *Head of Design
*Phone:* +353 877991603 | Email <eoin(a)nexucreative.com> | Web
<http://www.nexucreative.com/> | Instagram
<https://www.instagram.com/NEXU.creative/> | Twitter
<https://twitter.com/NEXU_Science>
Raptech Ltd. t/a *NEXU* Science Communication is registered in Ireland as a
private company limited by shares.
Registration No. 610585. Registered business address: 3 Mruigtuaithe,
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