Re: [ccp4bb] post to ccp4bb

2013-07-23 Thread Engin Özkan
On 7/23/13 9:01 AM, Edward A. Berry wrote: Here we need some clarification on which I/s(I) is meant - sigma(I) for the individual measurements, or sigma(I) from error propagation to the final I which as Engin notes will be lower. Isn't the reported Mean(I/sigI) in the reported Aimless table

Re: [ccp4bb] post to ccp4bb

2013-07-23 Thread Clemens Vonrhein
Hi, On Tue, Jul 23, 2013 at 10:11:04AM -0500, Engin Ozkan wrote: Isn't the reported Mean(I/sigI) in the reported Aimless table for the merged/averaged reflections (because that is what we are discussing about)? Yes - according to 1.

Re: [ccp4bb] post to ccp4bb

2013-07-23 Thread Edward A. Berry
Engin Özkan wrote: Also, why would we be using the batch-wise I/sigma's for determining resolution cutoffs? Agreed. For cutoff I guess it should be the final sigma going into the refinement program that matters, irrespective of whether that was achieve by averaging more images or using a

Re: [ccp4bb] post to ccp4bb

2013-07-22 Thread Ethan Merritt
On Monday, 22 July 2013, Katherine Donovan wrote: Hi All, I have a data set that was collected to about 2.2A, which I have processed in either P21 (to 2.4 A) or C2221 (2.25A). So I'm confused. You may not know what the spacegroup is, but you are processing the same spots either way. Why

Re: [ccp4bb] post to ccp4bb

2013-07-22 Thread Engin Özkan
On 7/22/13 11:20 PM, Ethan Merritt wrote: Which brings up the point that something seems to have gone wrong in one of your processing runs. Both runs claim mean (I/sigI) in the outer shell is 2.0, but in one case this is for the 2.4A shell and in the other case it's for the 2.2A shell. That is