Hi Volodymyr, Chimera is not easy to compile because it requires about 40 third-party libraries as described on the Chimera source code page (link is on the Chimera download page). http://www.cgl.ucsf.edu/chimera/sourcecode.html Also there is a bit of third-party surface calculation code which we are not allowed to distribute. All the source code is viewable with the web interface to the SVN repository. We also have a ticket active for allowing public access to check-out the entire Chimera SVN tree http://plato.cgl.ucsf.edu/trac/chimera/ticket/7641 but that has not been done yet. If your purpose is to make a figure that doesn't have a gap in the circular molecule then the following trick might achieve that. You could make a new molecule that is not closed and has the two starting residues duplicated at the end (with increasing residue numbers). Then when you show the ribbon there will be an overlapping stretch. Because the overlap will not be perfect you can hide the ribbon for one of each duplicated residue. If you add a couple duplicate residues the ribbon should come into exact alignment with itself. I've added your request for circular ribbons to our feature request list. http://plato.cgl.ucsf.edu/trac/chimera/wiki/requests If you can live with circular cross-section tube a command like shape tube :1-125.A@CA:1.A@CA radius 1 could do it but it does not close nicely -- different tangent vector and coloring and selection is not as flexible -- the tube is just a surface model. Tom
Dear Sirs,
I am writing to ask for the chimera sources -- I would like to visualize a circular molecule using ribbons. As far as I can tell, with the current code ribbons always have ends (cannot be closed) because of the following snipped from
libs/_chimera/Chimera.toolkit/Ribbon.implementation
696 Molecule::updateRibbonData() 697 { 698 clearRibbonData(); 699 700 // 701 // For each residue, find the residues before and after. 702 // Note that only residues with valid guide and plane atoms 703 // may be used as the prev/next residue in a ribbon. 704 // 705 std::map<Residue *, RibbonResidue> rrMap; 706 Residue *prev = NULL; ^^^^^^^^^^^^^^^^^^^^^
Could you please allow me to check out the svn version of the chimera or get (easily compilable) sources of a recent release.
Thank you,
Volodymyr
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