Leigh, Get_dihedral can do what you need -- I think the problem is that you need to be more narrow in your atom selections. Otherwise, 9/C will match every atom named "C", in every residue "9", and in every protein loaded.
With two proteins loaded: load prot1.pdb load prot2.pdb You'll need to restrict each atom selection to just one of the two proteins: get_dihedral prot1///9/C, prot1///10/N, prot1///10/CA, prot1///10/C Cheers, Warren > -----Original Message----- > From: pymol-users-ad...@lists.sourceforge.net > [mailto:pymol-users-ad...@lists.sourceforge.net] On Behalf Of > le...@rsvs.ulaval.ca > Sent: Wednesday, February 11, 2004 12:18 PM > To: pymol-users@lists.sourceforge.net > Subject: [PyMOL] get_dihedral & multiple objects > > I am trying to use the get_dihedral routine. If I've got > just one object it works as expected. For example: > > PyMOL>get_dihedral 9/C, 10/N, 10/CA, 10/C (I type in) > cmd.get_dihedral: -49.721 degrees. (pymol replies) > > But if I've got MORE than one object loaded, which I usually > do, pymol gives me this error: > > GetDihedral-Error: Selection 1 doesn't contain a single atom/vertex. > GetDihedral-Error: Selection 2 doesn't contain a single atom/vertex. > GetDihedral-Error: Selection 3 doesn't contain a single atom/vertex. > GetDihedral-Error: Selection 4 doesn't contain a single atom/vertex. > > I **need** to be able to call get_dihedral when I've got more > than one object loaded. De-selecting all but one object > doesn't work either. I have tried everything that I can think of. > Loading multiple pdb files into one object DOES Work (and > then I specify a state to get_dihedral), but again this is > not what I want to do. > > Can someone please help me? > > Leigh Willard > le...@rsvs.ulaval.ca > University Laval > > > > ------------------------------------------------------- > SF.Net is sponsored by: Speed Start Your Linux Apps Now. > Build and deploy apps & Web services for Linux with a free > DVD software kit from IBM. Click Now! > http://ads.osdn.com/?ad_id=1356&alloc_id=3438&op=click > _______________________________________________ > PyMOL-users mailing list > PyMOL-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/pymol-users >