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numpy.split

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xdtech

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发表于 2019-9-6 20:23:02 | 显示全部楼层 |阅读模式
numpy.split(ary, indices_or_sections, axis=0)[source]
Split an array into multiple sub-arrays.
Parameters:
ary : ndarray
Array to be divided into sub-arrays.
indices_or_sections : int or 1-D array
If indices_or_sections is an integer, N, the array will be divided into N equal arrays along axis. If such a split is not possible, an error is raised.
If indices_or_sections is a 1-D array of sorted integers, the entries indicate where along axisthe array is split. For example, [2, 3] would, for axis=0, result in
  • ary[:2]
  • ary[2:3]
  • ary[3:]

If an index exceeds the dimension of the array along axis, an empty sub-array is returned correspondingly.
axis : int, optional
The axis along which to split, default is 0.
Returns:
sub-arrays : list of ndarrays
A list of sub-arrays.
Raises:
ValueError
If indices_or_sections is given as an integer, but a split does not result in equal division.

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