cf.CoordinateReference.identity

CoordinateReference.identity(default='')[source]

Return the canonical identity.

By default the identity is the first found of the following:

  • The standard_name coordinate conversion parameter, preceded by 'standard_name:'.

  • The grid_mapping_name coordinate conversion parameter, preceded by 'grid_mapping_name:'.

  • The netCDF variable name (corresponding to a netCDF grid mapping variable), preceded by 'ncvar%'.

  • The value of the default parameter.

New in version (cfdm): 1.7.0

See also

identities

Parameters
default: optional

If no identity can be found then return the value of the default parameter.

Returns

The identity.

Examples

>>> f = cf.example_field(1)
>>> c = f.get_construct('coordinatereference0')
>>> c.identity()
'standard_name:atmosphere_hybrid_height_coordinate'

>>> c = f.get_construct('coordinatereference1')
>>> c.identity()
'grid_mapping_name:rotated_latitude_longitude'

>>> c = cf.CoordinateReference()
>>> c.identity()
''
>>> c.identity(default='no identity')
'no identity'