# cf.Data.isclose¶

Data.isclose(y, rtol=None, atol=None)[source]

Return where data are element-wise equal to other, broadcastable data.

Two real numbers x and y are considered equal if |x-y|<=atol+rtol|y|, where atol (the tolerance on absolute differences) and rtol (the tolerance on relative differences) are positive, typically very small numbers. See the atol and rtol parameters.

For numeric data arrays, d.isclose(y, rtol, atol) is equivalent to abs(d - y) <= atol + rtol*abs(y), otherwise it is equivalent to d == y.

Parameters

y: data_like

atol: float, optional

The absolute tolerance for all numerical comparisons. By default the value returned by the atol function is used.

rtol: float, optional

The relative tolerance for all numerical comparisons. By default the value returned by the rtol function is used.

Returns

bool

Examples:

>>> d = cf.Data([1000, 2500], 'metre')
>>> e = cf.Data([1, 2.5], 'km')
>>> print(d.isclose(e).array)
[ True  True]

>>> d = cf.Data(['ab', 'cdef'])
>>> print(d.isclose([[['ab', 'cdef']]]).array)
[[[ True  True]]]

>>> d = cf.Data([[1000, 2500], [1000, 2500]], 'metre')
>>> e = cf.Data([1, 2.5], 'km')
>>> print(d.isclose(e).array)
[[ True  True]
[ True  True]]

>>> d = cf.Data([1, 1, 1], 's')
>>> print(d.isclose(1).array)
[ True  True  True]