Re: [ccp4bb] Programs to detwin.

2010-06-30 Thread Eleanor Dodson
Hmm - detwinning is difficult - problematic , because you need to give a fixed twin fraction, which you may have estimated wrongly. both SHELX (I think) and REFMAC (I know) will refine with multiple twin operators, improve the twin fraction estimates, and output an "fobs" which is a detwinned F

Re: [ccp4bb] Programs to detwin.

2010-06-30 Thread Boaz Shaanan
orks.   Cheers,            Boaz - Original Message - From: yang li Date: Tuesday, June 29, 2010 22:01 Subject: [ccp4bb] Programs to detwin. To: CCP4BB@JISCMAIL.AC.UK > Dear All, > >     Can phenix.refine and > Detwin in CCP4 handle twinning data with > multiple twinning law?

[ccp4bb] Programs to detwin.

2010-06-29 Thread yang li
Dear All, Can phenix.refine and Detwin in CCP4 handle twinning data with multiple twinning law? Or there are some other good programs can do this? If the data has some pseudo-meroheral twin operators, can it be treated as same as merohedral operates? Thanks very much! Best Yang