There is also a CCP4 prog that compares phase sets, phistats. Don't know if this does what Phil suggests.
Adam On Wed, 29 Aug 2007, Phil Evans wrote: > Kevin > > Does this give the correlation between two (weighted) complex Fs, > which is arguably (ref Bricogne) the best measure, as it corresponds > to the map correlation but as a function of resolution? > > Phil > > On 28 Aug 2007, at 17:22, Kevin Cowtan wrote: > > > Yup. cphasematch > > > > It gives unweighted and weighted mean phase errors and F and E > > correlations. It'll also try the opposite hand if appropriate. > > > > It's in the GUI under Clipper utilities. > > > > For an example script, run it in the GUI and then view the command > > file. > > > > Kevin > > > > Winter, G (Graeme) wrote: > >> Hi CCP4BB, > >> Is there a straightforward way to compute the mean phase > >> difference between two phase columns in an MTZ file, allowing for > >> the difference in the origin? I am thinking something like: > >> Cad together two reflection files - renaming the PHIB column, most > >> likely > >> Compute phi offset - apply to get the origins the same > >> Compute the r.m.s. phase difference in degrees etc. > >> Also - is there a general feeling as to how useful this is for > >> comparing the results of phasing between different packages? I was > >> thinking that PHI_ref could be computed fom the final refined > >> structure, if this is available, as a benchmark. Alternatively is > >> there a "correct" way to be doing things like this? > >> An example script would be really great… > >> Thanks, > >> Graeme >
