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International
Tables for Crystallography Volume G Definition and exchange of crystallographic data Edited by J. R. Hester and B. McMahon © International Union of Crystallography 2026 |
International Tables for Crystallography (2026). Vol. G. Early view chapter
https://doi.org/10.1107/97809553602060001011 Chapter 4.2 Core dictionary (coreCIF) |
Core dictionary version 3.3.0
_refine_ls.wR_factor_gt
Name:_refine_ls.wR_factor_gt
Aliases:
_refine_ls_wR_factor_obs
_refine.ls_wR_factor_obs
_refine_ls_wR_factor_gt
Definition:
Weighted residual factors for significantly intense reflections
(satisfying _reflns.threshold_expression) included in the refinement.
The reflections must also satisfy the resolution limits established by
_refine_ls.d_res_high and _refine_ls.d_res_low.
( sum w [ Y(meas_gt) - Y(calc) ]^2^ )^1/2^
wR = ( ---------------------------------- )
( sum w Y(meas_gt)^2^ )
Y(meas_gt) = the 'observed' amplitude _refine_ls.structure_factor_coef
Y(calc) = the calculated amplitude _refine_ls.structure_factor_coef
w = the least-squares weight
and the sum is taken over the specified reflections.
Type: Real
Units: none
The permitted range is 0.0 → infinity
Category:
refine_ls