[Imgcif-l] ImgCIF Densiry Maps
David Brown idbrown at mcmaster.caThu Mar 22 19:32:24 GMT 2007
- Previous message: [Imgcif-l] ImgCIF Densiry Maps
- Next message: [Imgcif-l] ImgCIF Densiry Maps
- Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]
Joe Krahn wrote: >What about equation forms? It is important to define more than just the >space group, because non-standard settings can be useful in some cases. > The Hall symbol is a space group name (symbol) that specifies all possible settings of the 230 regular space groups. It can easily be expanded into the list of the expressions of symmetry operations. >It is also useful to include matrix+vector for such things as a >spherical asymmetric unit from a 72-fold symmetric virus map. If nobody >is working on it, maybe I should go ahead and write down a few >alternatives and check opinions of other macro-molecular crystallographers. > This would be useful. I assume that the existing format could be extended using notation such as x/72,y-56/72 etc. CIF does have definitions for symmetry operations in higher dimensions, but not, I believe, for non-crystallographic symmetries David Brown
- Previous message: [Imgcif-l] ImgCIF Densiry Maps
- Next message: [Imgcif-l] ImgCIF Densiry Maps
- Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]
More information about the imgcif-l mailing list