Data Item _diffrn_scan_frame_axis.reference_displacement

General

Item name
_diffrn_scan_frame_axis.reference_displacement
Category name
diffrn_scan_frame_axis
Attribute name
reference_displacement
Required in PDB entries
implicit
Used in currrent PDB entries
No

Item Description

The setting of the specified axis in millimetres for this frame against which measurements of the reference beam centre and reference detector distance should be made. This is normally the same for all frames, but the option is provided here of making changes when needed. If not provided, it is assumed to be equal to _diffrn_scan_frame_axis.displacement.

Data Type

Data type code
float
Data type detail
float item types are the subset of numbers that are the floating numbers.
Primitive data type code
numb
Regular expression
-?(([0-9]+)[.]?|([0-9]*[.][0-9]+))([(][0-9]+[)])?([eE][+-]?[0-9]+)?
Units
millimetres