cf.FieldAncillary.arctan

FieldAncillary.arctan(*args, **kwargs)[source]

Take the trigonometric inverse tangent of the data element-wise.

Units are ignored in the calculation. The result has units of radians.

The “standard_name” and “long_name” properties are removed from the result.

New in version 3.0.7.

See also

tan

Parameters
inplace: bool, optional

If True then do the operation in-place and return None.

Returns
FieldAncillary or None

The construct with the trigonometric inverse tangent of data values. If the operation was in-place then None is returned.

Examples:

>>> print(f.array)
[[0.5 0.7]
 [0.9 1.1]]
>>> g = f.arctan()
>>> g.Units
<Units: radians>
>>> print(g.array)
[[0.46364761 0.61072596]
 [0.7328151  0.83298127]]

>>> print(f.array)
[1.2 1.0 0.8 0.6 --]
>>> f.arctan(inplace=True)
>>> print(f.array)
[0.8760580505981934 0.7853981633974483 0.6747409422235527
 0.5404195002705842 --]