cf.CoordinateConversion¶

class
cf.
CoordinateConversion
(parameters=None, domain_ancillaries=None, source=None, copy=True)[source]¶ Bases:
cfdm.coordinateconversion.CoordinateConversion
A coordinate conversion component of a coordinate reference construct of the CF data model.
A coordinate conversion formula converting coordinate values taken from the dimension or auxiliary coordinate constructs to a different coordinate system. A term of the conversion formula can be a scalar or vector parameter which does not depend on any domain axis constructs, may have units, or may be a descriptive string (such as the projection name “mercator”), or it can be a reference to a domain ancillary construct (such as one containing spatially varying orography data). A coordinate reference construct relates the coordinate values of the field to locations in a planetary reference frame.
New in version 3.0.0.
Initialisation
 Parameters
 parameters:
dict
, optional Set parameters. The dictionary keys are term names, with corresponding parameter values.
Parameters may also be set after initialisation with the
set_parameters
andset_parameter
methods. Parameter example:
parameters={'earth_radius': 6371007.}
 domain_ancillaries:
dict
, optional Set references to domain ancillary constructs. The dictionary keys are term names, with corresponding domain ancillary construct keys.
Domain ancillaries may also be set after initialisation with the
set_domain_ancillaries
andset_domain_ancillary
methods. Parameter example:
domain_ancillaries={'orog': 'domainancillary2'}
 source: optional
Convert source, which can be any type of object, to a
CoordinateConversion
instance.All other parameters, apart from copy, are ignored and their values are instead inferred from source by assuming that it has the
CoordinateConversion
API. Any parameters that can not be retrieved from source in this way are assumed to have their default value.Note that if
x
is also aCoordinateConversion
instance thencf.CoordinateConversion(source=x)
is equivalent tox.copy()
. copy:
bool
, optional If True (the default) then deep copy the input parameters prior to initialisation. By default the parameters are not deep copied.
 parameters:
Parameter terms¶
Methods
Delete a parameter. 

Get a parameter value. 

Whether a parameter has been set. 

Set a parametervalued term. 

Return all parameters. 

Remove all parameters. 

Set parameters. 
Domain ancillary terms¶
Methods
Delete a domain ancillary. 

Return a domain ancillary term. 

Whether a domain ancillary has been set. 

Set an domain ancillaryvalued term. 

Return all domain_ancillaries. 

Remove all domain_ancillaries. 

Set domain_ancillaries. 
Miscellaneous¶
Methods
Return a deep copy. 

Whether two instances are the same. 
Special¶
Methods
Called by the 

Called by the 



Called by the 

Called by the 