[Chimera-users] Showing more than a single centroid trace

Francesco Pietra chiendarret at gmail.com
Wed Aug 17 07:11:44 PDT 2011

Hi Elaine;
I selected with line command the molecule that was giving the centroid
sequence. I was interested in the surroundings of that biatomic
molecule at various frame numbers. What I said, is that this is
possible only for the first movie. On subsequent movies, superimposed
to the first one, the line command always refers to that molecule of
the first movie.


On Tue, Aug 16, 2011 at 7:38 PM, Elaine Meng <meng at cgl.ucsf.edu> wrote:
> Hi Francesco,
> You cannot select centroid objects with a command -- they do not have residue or atom names.  You can only select them by clicking their lines in the Axes/Planes/Centroids dialog, or by Ctrl-clicking on them in the Chimera graphics window.
> Elaine
> On Aug 16, 2011, at 9:36 AM, Francesco Pietra wrote:
>> Hi Elaine:
>> I'll try your advice as soon as possible. However, turning mode1 out
>> of view in model window while playing movie for model 1, the centroid
>> for mode1 is still seen above model 0 and the trace for centroid for
>> model 0 . What I could not do was to select the centroid for model 1,
>> in order to highlight it. Command "sel :residuename" always selected
>> the centroid for model 0.
>> francesco
>> On Tue, Aug 16, 2011 at 5:51 PM, Elaine Meng <meng at cgl.ucsf.edu> wrote:
>>> Hi Francesco,
>>> I'm not sure I understand what you are asking.  Maybe you are saying that when you hide a model, the centroid is also hidden?
>>> Instead of hiding the model with the Model Panel "Shown" checkbox or command "~modeldisplay", which hides everything in the model, you can undisplay the protein parts and leave the centroid displayed.  For example, if I had protein models #0 and #1 and also centroids for each of those, I could undisplay the protein part only of #0:
>>> ~display #0
>>> ~ribbon #0
>>> ~surf #0
>>> (commands to undisplay atoms/bonds, ribbon, and molecular surface of model #0).  Then, you would have the protein #1 plus the centroids of both #0 and #1 displayed.  I hope this helps,
>>> Elaine
>>> ----------
>>> Elaine C. Meng, Ph.D.
>>> UCSF Computer Graphics Lab (Chimera team) and Babbitt Lab
>>> Department of Pharmaceutical Chemistry
>>> University of California, San Francisco
>>> On Aug 15, 2011, at 11:36 PM, Francesco Pietra wrote:
>>>> Hello:
>>>> I would like to show several centroid traces for model 0, 1, 2, ..
>>>> Actually, it is the same model, differing, in the movies, for the
>>>> protein fluctuations.
>>>> What I did, was to superimpose movie for model 1 to the already done
>>>> movie for model 0, hiding the protein for model 1 and choosing a
>>>> different color for the centroid. Doing that, the instant position of
>>>> the centroid can only be color-highlighted for model 0.
>>>> I wonder whether there is a better procedure to show the various
>>>> centroid traces above a single protein model.
>>>> thanks
>>>> francesco pietra
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