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Hi Bill
Which program is reporting anomalous R_Cullis for centrics? If that's
really what it's doing then it's not defining anomalous R_Cullis in the
'conventional' way, i.e.:
Sum |delta_anom_obs - delta_anom_calc|
--------------------------------------
Sum |delta_anom_obs|
For centrics all these terms are, or should be zero, so you would get
0/0 - not a well-defined quantity!
-- Ian
> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
> Behalf Of William Scott
> Sent: Wednesday, May 17, 2006 6:41 PM
> To: [email protected]
> Subject: [ccp4bb]: Anomalous Cullis Rfactor
>
> *** For details on how to be removed from this list visit the ***
> *** CCP4 home page http://www.ccp4.ac.uk ***
>
>
> Hi everyone:
>
> How is an anomalous Cullis R defined for centric reflections?
> (If it
> is the F+ - F-, how can that be meaningful?)
>
> Thanks.
>
> Bill Scott
>
>
>
>
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