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recarray.sort(axis=-1, kind='quicksort', order=None)
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Sort an array, in-place.
Parameters: axis : int, optional
Axis along which to sort. Default is -1, which means sort along the last axis.
kind : {?quicksort?, ?mergesort?, ?heapsort?}, optional
Sorting algorithm. Default is ?quicksort?.
order : str or list of str, optional
When
a
is an array with fields defined, this argument specifies which fields to compare first, second, etc. A single field can be specified as a string, and not all fields need be specified, but unspecified fields will still be used, in the order in which they come up in the dtype, to break ties.See also
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numpy.sort
- Return a sorted copy of an array.
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argsort
- Indirect sort.
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lexsort
- Indirect stable sort on multiple keys.
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searchsorted
- Find elements in sorted array.
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partition
- Partial sort.
Notes
See
sort
for notes on the different sorting algorithms.Examples
>>> a = np.array([[1,4], [3,1]]) >>> a.sort(axis=1) >>> a array([[1, 4], [1, 3]]) >>> a.sort(axis=0) >>> a array([[1, 3], [1, 4]])
Use the
order
keyword to specify a field to use when sorting a structured array:>>> a = np.array([('a', 2), ('c', 1)], dtype=[('x', 'S1'), ('y', int)]) >>> a.sort(order='y') >>> a array([('c', 1), ('a', 2)], dtype=[('x', '|S1'), ('y', '<i4')])
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recarray.sort()
2017-01-10 18:20:15
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