# cf.Field.del_coordinate_reference¶

Field.del_coordinate_reference(identity=None, construct=None, default=ValueError())[source]

Remove a coordinate reference construct and all of its domain ancillary constructs.

New in version 3.0.0.

Parameters
identity: optional

Select the coordinate reference construct by one of:

• The identity of a coordinate reference construct.

A construct has a number of string-valued identities

defined by its identities method, and is selected if any of them match the identity parameter. identity may be a string that equals one of a construct’s identities; or a re.Pattern object that matches one of a construct’s identities via re.search.

Note that in the output of a dump method or print call, a metadata construct is always described by one of its identities, and so this description may always be used as an identity value.

• The key of a coordinate reference construct

• None. This is the default, which selects the coordinate reference construct when there is only one of them.

Parameter example:

identity='standard_name:atmosphere_hybrid_height_coordinate'

Parameter example:

identity='grid_mapping_name:rotated_latitude_longitude'

Parameter example:

identity='transverse_mercator'

Parameter example:

identity='coordinatereference1'

Parameter example:

identity='key%coordinatereference1'

Parameter example:

identity='ncvar%lat_lon'

Parameter example:

identity=cf.eq('rotated_pole')'

Parameter example:

identity=re.compile('^rotated')

construct: optional

TODO

default: optional

Return the value of the default parameter if the construct can not be removed, or does not exist.

If set to an Exception instance then it will be

Returns

The removed coordinate reference construct.

Examples

>>> f.del_coordinate_reference('rotated_latitude_longitude')
<CF CoordinateReference: rotated_latitude_longitude>