nlcpy.squeeze

nlcpy.squeeze(a, axis=None)

Removes single-dimensional entries from the shape of an array.

Parameters

aarray_like

Input data.

axisNone or int or tuple of ints, optional

Selects a subset of the single-dimensional entries in the shape. If an axis is selected with shape entry greater than one, an error is raised.

Returns

squeezedndarray

The input array, but with all or a subset of the dimensions of length 1 removed. This is always a itself or a view into a.

参考

expand_dims

Expands the shape of an array.

reshape

Gives a new shape to an array without changing its data.

Examples

>>> import nlcpy as vp
>>> x = vp.array([[[0], [1], [2]]])
>>> x.shape
(1, 3, 1)
>>> vp.squeeze(x).shape
(3,)
>>> vp.squeeze(x, axis=0).shape
(3, 1)
>>> vp.squeeze(x, axis=1).shape   
Traceback (most recent call last):
...
ValueError: cannot select an axis to squeeze out which has size not equal to one
>>> vp.squeeze(x, axis=2).shape
(1, 3)