Data Item _array_structure_list_axis.reference_displacement
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General 
- Item name
- _array_structure_list_axis.reference_displacement
- Category name
- array_structure_list_axis
- Attribute name
- reference_displacement
- Required in PDB entries
- implicit
- Used in current PDB entries
- No
Item Description
The value of _array_structure_list_axis.reference_displacement
specifies the setting of the displacement of this axis used
for determining a reference beam centre and a reference detector
distance. It is normally expected to be identical to the value
of _array_structure_list_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