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



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> 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

>  Data collection machinary now always indexes on a right handed system,
> so you should never swap I+ with I-.
>
>  If a program wants to reindexs in some way it will also sort out any
> required swapping..
>
>  Eleanor

Weren't there some cases where the images read in by the software
were interpreted as left-to-right, when they were actually
right-to-left which then inverted the hand (even though everything
otherwise was internally right-handed)?