Re: [ccp4bb]: Q: Sign of anomalous difference out of Scalepack

["Edward A. Berry" <EABerry@LBL.gov>]

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We had to do that one time to correct a blunder (the orientation of
our Fuji image plates in the off-line scanner didn't correspond to
what we told Denzo we were doing). However I think if you use a
standard fixed-plate scanner and use the corresponding format
keyword with no inappropriate override like yscale -1 or cassette 
rotx 180 then you will index the data in the correct hand and don't
need to swap the Bivoet mates or invert the sign of the anomalous 
difference.

Ed

Phil Jeffrey wrote:
> 
> Is it ever necessary to invert the sign of the anomalous difference
> between I+ and I- out of Scalepack during phasing calculations ?  I seem
> to remember that it is not, but some searching this morning has failed to
> reveal the answer with any certainty.  I'm sure someone on here must know
> this.
> 
> Thanks
> Phil
> -------------------------------------------------------------------------------
> | Phil Jeffrey                                  |                             |
> | Crystallography Facility Manager              | If you lie to the compiler, |
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