Laboratory coordinate system

[Herbert J. Bernstein]

I would suggest either being consistent with imgCIF, if possible. -- Herbert

On Tue, Feb 23, 2021 at 8:59 PM James Hester via coreDMG <coredmg at iucr.org>
wrote:

> Dear Core DMG,
>
> It has come to the attention of the High Pressure dictionary development
> group that the laboratory coordinate system is never defined in core CIF.
> There is `_diffrn_orient_matrix` for the UB matrix but there is no mention
> of the coordinate system relative to which the resulting vector is referred.
>
> I would like to suggest that this group resolve this issue.
>
> I have too many CIF balls in the air at the moment to give this the
> attention it deserves so I suggest that one or more of you might like to
> "champion" this issue by essentially chairing the discussion and not
> letting it drop off the back of the desk. I would still participate as time
> allows. Any takers?
>
> thanks,
> James.
> --
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> F +61 (02) 9717 3145
> M +61 (04) 0249 4148
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