Data Item _reflns.threshold_expression

General

Item name
_reflns.threshold_expression
Category name
reflns
Attribute name
threshold_expression
Required in PDB entries
no
Used in currrent PDB entries
No

Item Description

The threshold, usually based on multiples of u(I), u(F2) or u(F), that serves to identify significantly intense reflections, the number of which is given by _reflns.number_gt. These reflections are used in the calculation of _refine.ls_R_factor_gt.

Item Example

 I>2u(I)

Data Type

Data type code
text
Data type detail
text item types / multi-line text ...
Primitive data type code
char
Regular expression
[][ \n\t()_,.;:"&<>/\{}'`~!@#$%?+=*A-Za-z0-9|^-]*

Aliases

Alias Item Name Dictionary Name Dictionary Version
_reflns_threshold_expression cif_core.dic 2.3