_variant.role

Name:
_variant.role

Definition:

   
    The value of _variant.role  specified a role for this variant.  
    Possible roles are null, "preferred", "raw data", and 
   "unsuccessful trial".
    A null value for _variant.role leaves the precise role of the 
    variant unspecified.  No inference should be made that the 
    variant with the latest time stamp is preferred.

Type: Code

The data value must be one of the following:

preferred A value of "preferred" indicates that rows of any categories specifying this variant should be used in preference to rows with the same key specifying other variants or the null variant. It is an error to specify two variants that appear in the same category with the same key as being preferred, but it is not an error to specify more than one variant as preferred in other cases.

'raw data' A value of "raw data" indicates data prior to any corrections, calculations or refinements. It is not necessarily an error for raw data to also be a variant of an earlier variant. It may be replacement raw data for earlier data believed to be erroneous.

'unsuccessful trial' A value of "unsuccessful trial" indicates data that should not be used for further calculation.

Category:
variant

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Crystallographic Information Framework

Image CIF dictionary (imgCIF) version 3.00.04

_variant.role

International Tables for Crystallography

Volume G: Definition and exchange of crystallographic data

Edited by S. R. Hall and B. McMahon

IUCrData