Isn't it simply FSC? Then according to Wikipedia the citation goes back even further, 1986 ! Pavel
On Tue, Jan 27, 2015 at 2:06 PM, Randy Read <rj...@cam.ac.uk> wrote: > Hi, > > Bart Hazes' sftools program does map correlation in resolution shells in > this way, and may even have been doing it before 1996 if I'm remembering > correctly. > > Randy > > On 27 Jan 2015, at 21:12, Alexandre OURJOUMTSEV <sa...@igbmc.fr> wrote: > > Dear Phil, > > > > *Gerard Bricogne pointed out a long time ago that the clearest comparison > between two sets of phases is the complex correlation coefficient between > two "best" structure factors ( m F exp(i phi) ) - this is equivalent to map > correlation, but can be analysed in resolution bins.I'm not sure whether > there are programs which calculate this, though it's straightforward, and > I've had various jiffy programs in the past (which I've probably lost)* > > A while ago this was formally reported, including technical details, by > Lunin & Lunina (1996), Acta Cryst., A52, 365-368, and they had at that > moment some fortran program. In particular, this algorithm makes a key part > of the low-resolution direct phasing approaches. > > With best regards, > > Sacha Urzhumtsev > > > ------ > Randy J. Read > Department of Haematology, University of Cambridge > Cambridge Institute for Medical Research Tel: + 44 1223 336500 > Wellcome Trust/MRC Building Fax: + 44 1223 336827 > Hills Road E-mail: rj...@cam.ac.uk > Cambridge CB2 0XY, U.K. www-structmed.cimr.cam.ac.uk > >
