Crystallographic Information Framework

[CIF logo]


Macromolecular dictionary (mmCIF) version 2.0.09




   For each reflection class, the residual factor for significantly
   intense reflections (see _reflns.threshold_expression) included
   in the refinement.
   The reflections also satisfy the resolution limits established by
   _reflns_class.d_res_high and _reflns_class.d_res_low.
   This is the conventional R factor. See also the
   definition of _reflns_class.wR_factor_all.

       sum | F(obs) - F(calc) |
   R = ------------------------
             sum | F(obs) |

   F(obs)  = the observed structure-factor amplitudes
   F(calc) = the calculated structure-factor amplitudes

   and the sum is taken over the reflections of this class.

Type: float

Mandatory item: no

_reflns_class_R_factor_gt (cif_core.dic version 2.3)
The permitted range is [0.0, infinity)

Category: reflns_class