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INTERNATIONAL TABLES for CRYSTALLOGRAPHY |
Volume G |
Definition and Exchange of Crystallographic Data |
Definition:
Weighted residual factor wR for all reflections that satisfy the
resolution limits established by _refine.ls_d_res_high and
_refine.ls_d_res_low.
( sum|w |Y~obs~ - Y~calc~|^2^| )^1/2^
wR = ( ---------------------------- )
( sum|w Y~obs~^2^| )
Y~obs~ = the observed amplitude specified by
_refine.ls_structure_factor_coef
Y~calc~ = the calculated amplitude specified by
_refine.ls_structure_factor_coef
w = the least-squares weight
sum is taken over the specified reflections
Type: float
Mandatory item: no
Alias:Related item: _refine.ls_R_factor_all (alternate)
Category: refine
Copyright © 2005 International Union of Crystallography