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Re: [ccp4bb]: Ranom in Scala

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Dear Nick,

On 23.02.2000 at 09:46:42, Dr Nicholas Keep wrote:
> I am processing nearly 180 degrees of data from a crystal which I
> believe to be P422 (hence I have very high redundancy).  I am perplexed
> by the behaviour of Ranom in Scala.  Processing my data gives Rfac in
> the outer bin of .375 Rfull of 0.358 and Ranom of 0.10.  This made me
> wonder if the crystal was not showing the full symmetry at the high
> resolution as the anomalous data is so much 'better' so I reprocessed in
> P1 (still fairly complete data).  This only dropped the Rfac in the
> outer bin to 0.227 rfull to 0.246 but increased Ranom to 0.303.  These
> trends generally hold in the lower resolution bins and for the peak and
> remote wavelengths.

In this case, it might be a good idea to look at the redundancy-corrected
R-factors Rmeas and Rmeas0. Could you please post these values for the two
ways in which you processed your data?


Joachim Meyer			jmeyer@embl-heidelberg.de
 	phone +49-6221-387495	FAX +49-6221-387-306
	EMBL Heidelberg, Biological Structures
	Meyerhofstr. 1, D-69117 Heidelberg, Germany