Re: [ccp4bb] Meaning of sigma level of electron density map?

2008-07-27 Thread Hidong Kim
Hi, P K, I think of it in terms of the probability of finding an electron within the volume enclosed by the electron density map. In general, the probability of finding an electron close to the nucleus will be higher than that of finding an electron far from the nucleus due to electrostatic a

Re: [ccp4bb] Friedel vs Bijvoet

2008-06-26 Thread Hidong Kim
Hi, Bernhard, Check out page 8 http://students.washington.edu/zanghell/TAs/BSTR521/notes/anomalous_scattering.pdf I thought that Friedels are reflections related by pure inversion symmetry, while Bijvoets are reflections related by non-inversion symmetry of the reciprocal lattice. Thanks,

Re: [ccp4bb] Two off-topic questions

2008-05-12 Thread Hidong Kim
Oh, snap! Frank von Delft <[EMAIL PROTECTED]> Sent by: CCP4 bulletin board 05/12/2008 09:12 AM Please respond to Frank von Delft <[EMAIL PROTECTED]> To CCP4BB@JISCMAIL.AC.UK cc Subject Re: [ccp4bb] Two off-topic questions > only tried once). Does any body have ideas about how to

Re: [ccp4bb] Real space rotation translation

2008-01-24 Thread Hidong Kim
Hi, Ben, Try lsqkab. Do a superposition of the before and after coordinates of the domain. The log file will have the rotation matrix and the translation vector. Good luck, Hidong Benjamin Brooks <[EMAIL PROTECTED]> Sent by: CCP4 bulletin board 01/24/2008 01:58 PM Please respon