Data Item _diffrn_detector_element.reference_center_units

General

Item name
_diffrn_detector_element.reference_center_units
Category name
diffrn_detector_element
Attribute name
reference_center_units
Required in PDB entries
no
Used in currrent PDB entries
No

Item Description

The value of _diffrn_detector_element.reference_center_units specifies the units in which the values of _diffrn_detector_element.reference_center_fast and _diffrn_detector_element.reference_center_slow are presented. The default is 'mm' for millimetres. The alternatives are 'pixels' and 'bins'. In all cases the centre distances are measured from the centre of the first pixel, i.e. in a 2x2 binning, the measuring origin is offset from the centres of the bins by one half pixel towards the first pixel. If 'bins' is specified, the data in _array_intensities.pixel_fast_bin_size, _array_intensities.pixel_slow_bin_size, and _array_intensities.pixel_binning_method are used to define the binning scheme.

Data Type

Data type code
code
Data type detail
code item types/single words ...
Primitive data type code
char
Regular expression
[_,.;:"&<>()/\{}'`~!@#$%A-Za-z0-9*|+-]*

Controlled Vocabulary

Allowed Value Details
bins detector bins
mm millimetres
pixels detector pixels

Controlled Vocabulary at Deposition

Allowed Value Details
bins detector bins
mm millimetres
pixels detector pixels