unique

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unique#

class brainunit.math.unique(a, return_index=False, return_inverse=False, return_counts=False, axis=None, *, equal_nan=False, size=None, fill_value=None, **kwargs)#

Find the unique elements of a quantity or an array.

Parameters:

  • a (array_like, Quantity) – Input array.

  • return_index (bool, optional) – If True, also return the indices of a (along the specified axis, if provided) that result in the unique array.

  • return_inverse (bool, optional) – If True, also return the indices of the unique array (for the specified axis, if provided) that can be used to reconstruct a.

  • return_counts (bool, optional) – If True, also return the number of times each unique item appears in a.

  • axis (int, optional) – The axis along which to operate. If None, the array is flattened before use. Default is None.

  • equal_nan (bool, optional) – Whether to compare NaN’s as equal. If True, NaN’s in a will be considered equal to each other in the unique array.

  • size (int, optional) – The length of the output array. If size is not None, the output array will have the length of size.

  • fill_value (scalar, optional) – The value to use for missing values. If fill_value is not None, the output array will have the length of size.

Returns:

res – The sorted unique values.

Return type:

ndarray, Quantity

Examples

>>> import saiunit as u
>>> a = [0, 1, 2, 1, 0] * u.second
>>> u.math.unique(a)
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