Re: [ccp4bb] different resolution cutoffs for integration and scaling

2017-02-21 Thread Jorge Iulek
Thanks Kay and Graeme for inputs. I should, nevertheless, go deeper into this. I should say that, in my experience, in some cases the effect is small, but in some others, I would consider significative. I will try to be more systematic when possibl

Re: [ccp4bb] different resolution cutoffs for integration and scaling

2017-02-21 Thread Graeme Winter
Dear Jorge As a rule of thumb I would always integrate every reflection on the detector face & only limit the resolution in scaling (*1) - most integration programs are well behaved when it comes to modelling reflection profiles & integrating spots which are “invisible” As to why you observe w

Re: [ccp4bb] different resolution cutoffs for integration and scaling

2017-02-21 Thread Kay Diederichs
I've also experienced this, but since the improvement is small, I did not pay much attention, and did not investigate. My hypothesis why this occurs agrees with yours. Nothing should prevent you to make use of this effect! best, Kay On Mon, 20 Feb 2017 08:24:58 -0300, Jorge Iulek wrote: > >

[ccp4bb] different resolution cutoffs for integration and scaling

2017-02-20 Thread Jorge Iulek
Dear all,     I have been noticing, with many datasets, processed the duet xds/scale, that when one integrates to a resolution limit which is (a little) higher than the one used for scaling/merging, the statistics (and here I mean R-symm, R-meas,