Re: [ccp4bb] just how bad can phases be and still help

2007-09-09 Thread Sacha Urzhumtsev
Dear Bryan, dear all ! Low initial FOM in many senses are good [..] because density modification has more latitude Sorry for being late with my remark : some theoretical results directly answering Bryan's practical question are discussed by Lunin & Woolfson (1993) in Acta Cryst., D49, 530-5

Re: [ccp4bb] CCP4 rotation convention - long comments

2007-08-13 Thread Sacha Urzhumtsev
Dear all, dear Bernhard, Even when we already had an exchange by mails with Bernhard after he sent his question, I hope it might be useful for many, especially young crystallographers, to follow the problem. Phil Evans writes in acta D57 1355 (2001) on p 1358 section 5.2: "the conventio