DRAFT DICTIONARY CBF/imgCIF Extensions Dictionary | Draft version 1.5 for comment

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Index

##### Image dictionary (imgCIF) version 1.5.4

# _diffrn_scan_axis.reference_displacement

Name:
`'_diffrn_scan_axis.reference_displacement'`

Definition:

            The setting of the specified axis in millimetres
                   against which measurements of the reference beam center
                   and reference detector distance should be made.

                   In general, this will agree with
                   _diffrn_scan_frame_axis.reference_displacement.

                   If the individual frame values vary, then the value of
                   _diffrn_scan_axis.reference_displacement will be
                   representative of the ensemble of values of
                   _diffrn_scan_frame_axis.reference_displacement (e.g.
                   the mean).

                   If not specified, the value defaults to to the value of
                   _diffrn_scan_axis.displacement.

Type: float

Mandatory item: implicit

Category: diffrn_scan_axis

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Copyright © 2005 International Union of Crystallography