Re: [ccp4bb] Reference for Resolution Cutoffs

2011-12-06 Thread Jacob Keller
Yes, that's a good point--you can't really discredit Rmerge (it's just a mathematical expression, after all, which must be translated vis a vis redundancy), but you can show that the other R's are pleasanter ways to represent the data. Jacob On Tue, Dec 6, 2011 at 3:02 PM, Anastassis Perrakis wr

Re: [ccp4bb] Reference for Resolution Cutoffs

2011-12-06 Thread Anastassis Perrakis
Also Nat Struct Biol. 1997 Apr;4(4):269-75. Improved R-factors for diffraction data analysis in macromolecular crystallography. Diederichs K, Karplus PA. But none of these are in any way 'discrediting' Rmerge, they are just proposing more statistically sound alternatives. That is not the same .

Re: [ccp4bb] Reference for Resolution Cutoffs

2011-12-06 Thread Ed Pozharski
On Tue, 2011-12-06 at 13:43 -0600, Jacob Keller wrote: > The question is: "is there a reference in which Rmerge has been > thoroughly, clearly, and authoritatively discredited as a data > evaluation metric in the favor of Rmeas, Rpim, etc., and if so, what > is that reference?" > Aren't these suf

Re: [ccp4bb] Reference for Resolution Cutoffs

2011-12-06 Thread Ethan Merritt
On Tuesday, December 06, 2011 11:43:05 am Jacob Keller wrote: > Hi Ethan, thanks for pushing me to clarify--see below. > > >> I hate to broach this subject again due to its wildly controversial > >> nature, but I was wondering whether there was any reference which > >> systematically analyses reso

Re: [ccp4bb] Reference for Resolution Cutoffs

2011-12-06 Thread Jacob Keller
Hi Ethan, thanks for pushing me to clarify--see below. >> I hate to broach this subject again due to its wildly controversial >> nature, but I was wondering whether there was any reference which >> systematically analyses resolution cutoffs as a function of I/sig, >> Rmerge, Rmeas, Rpim, etc. I st

Re: [ccp4bb] Reference for Resolution Cutoffs

2011-12-06 Thread Ethan Merritt
On Tuesday, December 06, 2011 09:13:03 am Jacob Keller wrote: > Dear Crystallographers, > > I hate to broach this subject again due to its wildly controversial > nature, but I was wondering whether there was any reference which > systematically analyses resolution cutoffs as a function of I/sig, >

[ccp4bb] Reference for Resolution Cutoffs

2011-12-06 Thread Jacob Keller
Dear Crystallographers, I hate to broach this subject again due to its wildly controversial nature, but I was wondering whether there was any reference which systematically analyses resolution cutoffs as a function of I/sig, Rmerge, Rmeas, Rpim, etc. I strongly dislike Rmerge/Rcryst for determinin