Re: [ccp4bb] Question on Symmetry Axis Notation Convention

2012-06-18 Thread Ian Tickle
James, The IUCr report that Ethan referred to distinguishes carefully between a symmetry element and a symmetry operation. A symmetry element corresponds to a set of coaxial rotation or screw axes (assuming we're limiting the discussion to enantiomorphic space groups) in a unit cell related by

Re: [ccp4bb] Question on Symmetry Axis Notation Convention

2012-06-15 Thread Ian Clifton
Ethan Merritt merr...@u.washington.edu writes: On Thursday, June 14, 2012 12:06:13 pm James Stroud wrote: Hello All, I would like to discuss symmetry axes, but I'm not sure what the notation convention is. For example, I'd like to say something about a 2(1) along the x-axis, but the phrase

[ccp4bb] Fw: [ccp4bb] Question on Symmetry Axis Notation Convention

2012-06-15 Thread REX PALMER
Subject: [ccp4bb] Question on Symmetry Axis Notation Convention Hello All, I would like to discuss symmetry axes, but I'm not sure what the notation convention is. For example, I'd like to say something about a 2(1) along the x-axis, but the phrase the 2(1) symmetry axis along x is a bit cumbersome

[ccp4bb] Question on Symmetry Axis Notation Convention

2012-06-14 Thread James Stroud
Hello All, I would like to discuss symmetry axes, but I'm not sure what the notation convention is. For example, I'd like to say something about a 2(1) along the x-axis, but the phrase the 2(1) symmetry axis along x is a bit cumbersome to repeat many times or to put in a table. So I'd like a

Re: [ccp4bb] Question on Symmetry Axis Notation Convention

2012-06-14 Thread Boaz Shaanan
: [ccp4bb] Question on Symmetry Axis Notation Convention Hello All, I would like to discuss symmetry axes, but I'm not sure what the notation convention is. For example, I'd like to say something about a 2(1) along the x-axis, but the phrase the 2(1) symmetry axis along x is a bit cumbersome