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Item _refine.ls_restrained_S_all


Description

              The least-squares goodness-of-fit parameter S' for all
               reflections after the final cycle of least-squares refinement.
               This parameter explicitly includes the restraints applied
               in the least-squares process. See also the definition of
               _refine.ls_goodness_of_fit_all.

                    (   sum   |w    |Y~obs~  - Y~calc~|^2^| )^1/2^
                    ( + sum~r~|w~r~ |P~calc~ - P~targ~|^2^| )
               S' = ( ------------------------------------- )
                    (      N~ref~ + N~restr~ - N~param~     )

               Y~obs~   = the observed coefficients
                          (see _refine.ls_structure_factor_coef)
               Y~calc~  = the calculated coefficients
                          (see _refine.ls_structure_factor_coef)
               w        = the least-squares reflection weight
                          [1/(e.s.d. squared)]

               P~calc~  = the calculated restraint values
               P~targ~  = the target restraint values
               w~r~     = the restraint weight

               N~ref~   = the number of reflections used in the refinement
                          (see _refine.ls_number_reflns_obs)
               N~restr~ = the number of restraints
                          (see _refine.ls_number_restraints)
               N~param~ = the number of refined parameters
                          (see _refine.ls_number_parameters)

               sum  is taken over the specified reflections
               sumr is taken over the restraints

Category

refine

Mandatory Code

no

Data Type Code

float

Enumeration Range

Minimum Value Maximum Value
0.0 n.a.
0.0 0.0

Alias Names

Alias Name Dictionary Version
_refine_ls_restrained_S_all cif_core.dic 2.0.1

 

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