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Core CIF Dictionary version 2.3




Category: refine

Data type: numb

Related item: '_refine_ls_wR_factor_gt'
Related function: replace

Enumeration range: 0.0 -> infinity


   Weighted residual factors for the reflections classified as
   'observed' (see _reflns_observed_criterion) and included
   in the refinement.  The reflections also satisfy the resolution
   limits established by _refine_ls_d_res_high and
   _refine_ls_d_res_low. See also the _refine_ls_R_factor_

        ( sum w [ Y(obs) - Y(calc) ]^2^  )^1/2^
   wR = ( ------------------------------ )
        (         sum w Y(obs)^2^       )

   Y(obs)  = the observed amplitude specified by
   Y(calc) = the calculated amplitude specified by
   w       = the least-squares weight

   and the sum is taken over the specified reflections

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