cfdm.core.FieldAncillary¶
-
class
cfdm.core.
FieldAncillary
(properties=None, data=None, source=None, copy=True, _use_data=True)[source]¶ Bases:
cfdm.core.abstract.propertiesdata.PropertiesData
A field ancillary construct of the CF data model.
The field ancillary construct provides metadata which are distributed over the same sampling domain as the field itself. For example, if a data variable holds a variable retrieved from a satellite instrument, a related ancillary data variable might provide the uncertainty estimates for those retrievals (varying over the same spatiotemporal domain).
The field ancillary construct consists of an array of the ancillary data, which is zero-dimensional or which depends on one or more of the domain axes, and properties to describe the data. It is assumed that the data do not depend on axes of the domain which are not spanned by the array, along which the values are implicitly propagated. CF-netCDF ancillary data variables correspond to field ancillary constructs. Note that a field ancillary construct is constrained by the domain definition of the parent field construct but does not contribute to the domain’s definition, unlike, for instance, an auxiliary coordinate construct or domain ancillary construct.
New in version 1.7.0.
Initialization
Parameters: - properties:
dict
, optional Set descriptive properties. The dictionary keys are property names, with corresponding values. Ignored if the source parameter is set.
- Parameter example:
properties={'standard_name': 'altitude'}
Properties may also be set after initialisation with the
set_properties
andset_property
methods.- data:
Data
, optional Set the data. Ignored if the source parameter is set.
The data also may be set after initialisation with the
set_data
method.- source: optional
Initialize the properties and data from those of source.
- copy:
bool
, optional If False then do not deep copy input parameters prior to initialization. By default arguments are deep copied.
- properties:
Properties¶
Methods
del_property |
Remove a property. |
get_property |
Return a property. |
has_property |
Whether a property has been set. |
set_property |
Set a property. |
properties |
Return all properties. |
clear_properties |
Remove all properties. |
set_properties |
Set properties. |