[chimerax-users] multiple isosurfaces for one map

[Guillaume Gaullier]

Hi Daniel,

Yes, I just tried, and saw it’s possible to display both with distinct styles and colors. In the volume viewer, the style and color options will only apply to the threshold cursor you moved or clicked last. I did not pay close attention to what the log reported when I tried, but it printed commands, so there is definitely a way to achieve the same thing with commands.

I hope this helps,

Guillaume


> On 4 Dec 2020, at 15:08, Daniel Larsson <daniel.larsson at icm.uu.se> wrote:
> 
> Hi Elaine,
> 
> Thank you for pointing out that if one right-clicks in the histogram of the volume in the volume viewer window, one can add a level. It was also easy to add another surface by giving multiple level arguments to the volume command.
> 
> Is it possible to show one contour as surface and one as mesh?
> 
> Regards,
> Daniel
> 
> 
> 
>> On 2020-11-19, at 17:17, Elaine Meng <meng at cgl.ucsf.edu> wrote:
>> 
>> Hi Daniel,
>> Yes, often more than one isosurface is shown for a given map, and besides or as an alternative to making the outer one transparent, you can use the mesh style.  The Volume Viewer tool's context menu  (shown with right-click, except on Mac Ctrl-click) includes choices to add or delete thresholds, i.e. contour levels.
>> <http://rbvi.ucsf.edu/chimerax/docs/user/tools/volumeviewer.html>
>> 
>> Or it can be done with commands, as in the first example in the "volume" command documentation:
>> <http://rbvi.ucsf.edu/chimerax/docs/user/commands/volume.html>
>> 
>> volume #1 style mesh level 0.8 color red level 1.2 color 0,50,80
>> 
>> I hope this helps,
>> Elaine
>> -----
>> Elaine C. Meng, Ph.D.
>> UCSF Chimera(X) team
>> Department of Pharmaceutical Chemistry
>> University of California, San Francisco
>> 
>>> On Nov 19, 2020, at 12:35 AM, Daniel Larsson <daniel.larsson at icm.uu.se> wrote:
>>> 
>>> Is it possible to visualize two surfaces for the same model? I was thinking for example for the purpose of showing two different levels of a map with the lower one as a semi-transparent surface. The work-around is to load the same map twice into two different models, but that will take up more memory and is more cumbersome.
>>> Regards,
>>> Daniel
>> 
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