cfdm.AuxiliaryCoordinate¶
-
class
cfdm.
AuxiliaryCoordinate
(properties=None, data=None, bounds=None, geometry=None, interior_ring=None, source=None, copy=True, _use_data=True)[source]¶ Bases:
cfdm.mixin.netcdf.NetCDFVariable
,cfdm.mixin.coordinate.Coordinate
,cfdm.core.auxiliarycoordinate.AuxiliaryCoordinate
An auxiliary coordinate construct of the CF data model.
An auxiliary coordinate construct provides information which locate the cells of the domain and which depend on a subset of the domain axis constructs. Auxiliary coordinate constructs have to be used, instead of dimension coordinate constructs, when a single domain axis requires more then one set of coordinate values, when coordinate values are not numeric, strictly monotonic, or contain missing values, or when they vary along more than one domain axis construct simultaneously. CF-netCDF auxiliary coordinate variables and non-numeric scalar coordinate variables correspond to auxiliary coordinate constructs.
The auxiliary coordinate construct consists of a data array of the coordinate values which spans a subset of the domain axis constructs, an optional array of cell bounds recording the extents of each cell (stored in a
Bounds
object), and properties to describe the coordinates. An array of cell bounds spans the same domain axes as its coordinate array, with the addition of an extra dimension whose size is that of the number of vertices of each cell. This extra dimension does not correspond to a domain axis construct since it does not relate to an independent axis of the domain. Note that, for climatological time axes, the bounds are interpreted in a special way indicated by the cell method constructs.NetCDF interface
The netCDF variable name of the construct may be accessed with the
nc_set_variable
,nc_get_variable
,nc_del_variable
andnc_has_variable
methods.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.
Properties may also be set after initialisation with the
set_properties
andset_property
methods.- Parameter example:
properties={'standard_name': 'latitude'}
- data:
Data
, optional Set the data array. Ignored if the source parameter is set.
The data array may also be set after initialisation with the
set_data
method.- bounds:
Bounds
, optional Set the bounds array. Ignored if the source parameter is set.
The bounds array may also be set after initialisation with the
set_bounds
method.- source: optional
Initialize the properties, data and bounds 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:
Inspection¶
Methods
A full description of the auxiliary coordinate construct. |
|
Return the canonical identity. |
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Return all possible identities. |
Attributes
Return a description of the construct type. |
Properties¶
Methods
Remove a property. |
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Return a property. |
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Whether a property has been set. |
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Set a property. |
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Return all properties. |
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Remove all properties. |
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Set properties. |
Data¶
Methods
Remove the data. |
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Return the data. |
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Whether a data has been set. |
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Set the data. |
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Expand the shape of the data array. |
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Remove size one axes from the data array. |
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Permute the axes of the data array. |
Attributes
Return the data. |
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Data-type of the data elements. |
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The number of dimensions in the data array. |
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A tuple of the data array’s dimension sizes. |
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The number of elements in the data array. |
Bounds¶
Methods
Remove the bounds. |
|
Return the bounds. |
|
Whether or not there are bounds. |
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Set the bounds. |
Attributes
Return the bounds. |
Miscellaneous¶
Methods
Return a deep copy. |
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Whether two auxiliary coordinate constructs are the same. |
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Uncompress the construct. |
NetCDF¶
Methods
Remove the netCDF variable name. |
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Return the netCDF variable name. |
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Whether the netCDF variable name has been set. |
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Set the netCDF variable name. |
Special¶
Methods
Called by the |
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Return a subspace of the construct defined by indices |
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Called by the |
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Called by the |