Re: [ccp4bb]: twinning operator for P21, C2, and C2221

["Eleanor J. Dodson" <ccp4@ysbl.york.ac.uk>]

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xinqi liu wrote:
> 
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> 
> Hi, guys,
> 
>   Sorry to bother you again. By your help, I find the
> twinning operator table in twinning.doc, but the space
> group of my data is only three possibility: P21, C2 or
> C2221. I can't find the twinning operator for them.
> Does anyone know about it?
> 
> Thank you very much.
> 
> xinqi
> :)
> 
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 Twinning is pretty rare in these space groups, and requires special
relationships between the axes. What are your cell dimensions?

Eleanor