Doug, Setwise logical ANDs and ORs are tricky at first. In this case, you want to create a new set that contains atoms in a1 *or* a2. There aren't any atoms that are in both a1 and a2 which is why you're ending up with an empty object. create one, a1 or a2
Cheers, Warren -- Warren L. DeLano, Ph.D. Principal Scientist . DeLano Scientific LLC . 400 Oyster Point Blvd., Suite 213 . South San Francisco, CA 94080 . Biz:(650)-872-0942 Tech:(650)-872-0834 . Fax:(650)-872-0273 Cell:(650)-346-1154 . mailto:war...@delsci.com > -----Original Message----- > From: pymol-users-ad...@lists.sourceforge.net > [mailto:pymol-users-ad...@lists.sourceforge.net] On Behalf Of > Douglas Kojetin > Sent: Thursday, January 20, 2005 11:03 AM > To: pymol > Subject: [PyMOL] selection help > > Hi All- > > I'm having some problems with selection syntax w/ multiple objects. > I've loaded four different PDB files (in sequence & structure): > > load 1.pdb, a1 > load 2.pdb, a2 > load 3.pdb, b1 > load 4.pdb, b2 > > I wanted to create two new selections: > > one = a1 & a2 > two = b1 & b2 > > I've tried many different combinations of PyMOL selection > syntax, but I cannot get the objects to add to the same > selection (using 'create' or > 'select'): > > create one, a1 + a2 > create one, a1 and a2 > create one, object a1 + object a2 > create one, a* > > From what I've read in the manual, I think these commands > are not working because they actually work to select atoms > that are the same between a1 & a2. The manual says it > 'selects atoms included in both s1 and s2'. > > Any clues or hints? > > Thanks, > Doug > > > > ------------------------------------------------------- > This SF.Net email is sponsored by: IntelliVIEW -- Interactive > Reporting Tool for open source databases. Create drag-&-drop > reports. Save time by over 75%! Publish reports on the web. > Export to DOC, XLS, RTF, etc. > Download a FREE copy at http://www.intelliview.com/go/osdn_nl > _______________________________________________ > PyMOL-users mailing list > PyMOL-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/pymol-users >