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INTERNATIONAL TABLES for CRYSTALLOGRAPHY |
Volume G |
Definition and Exchange of Crystallographic Data |
Definition:
A description of the method by which a subset of reflections was selected for exclusion from refinement so as to be used in the calculation of a 'free' R factor.Example:
; The data set was sorted with l varying most
rapidly and h varying least rapidly. Every
10th reflection in this sorted list was
excluded from refinement and included in the
calculation of a 'free' R factor.
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Type: text
Mandatory item: no
Category: reflns
Copyright © 2005 International Union of Crystallography