Data Item _refine.correlation_coeff_Fo_to_Fc
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General 
- Item name
- _refine.correlation_coeff_Fo_to_Fc
- Category name
- refine
- Attribute name
- correlation_coeff_Fo_to_Fc
- Required in PDB entries
- no
- Used in current PDB entries
- Yes, in about 35.5 % of entries
Item Description
The correlation coefficient between the observed and
calculated structure factors for reflections included in
the refinement.
The correlation coefficient is scale independent and gives
an idea of the quality of the refined model.
sumi(Foi Fci - <Fo><Fc>)
Rcorr = ------------------------------------------------------------
SQRT{sumi(Foi)2-<Fo>2} SQRT{sumi(Fci)2-<Fc>2}
Fo = observed structure factors
Fc = calculated structure factors
<> = denotes average value
summation is over reflections included in the refinement
Data Type 
- Data type code
- float
- Data type detail
- int item types are the subset of numbers that are the floating numbers.
- Primitive data type code
- numb
- Regular expression
- -?(([0-9]+)[.]?|([0-9]*[.][0-9]+))([(][0-9]+[)])?([eE][+-]?[0-9]+)?
Aliases
| Alias Item Name | Dictionary Name | Dictionary Version |
|---|---|---|
| _refine.ebi_Correlation_coeff_Fo_to_Fc | ebi_extensions | 1.0 |