我有一个多维度的NumPy数组:
In [1]: m = np.arange(1,26).reshape((5,5))
In [2]: m
Out[2]:
array([[ 1, 2, 3, 4, 5],
[ 6, 7, 8, 9, 10],
[11, 12, 13, 14, 15],
[16, 17, 18, 19, 20],
[21, 22, 23, 24, 25]])
还有一个数组 p = np.asarray([[1,1],[3,3]])
。我希望p
将作为m
的索引数组,即:
m[p]
array([7, 19])
然而我得到了:
In [4]: m[p]
Out[4]:
array([[[ 6, 7, 8, 9, 10],
[ 6, 7, 8, 9, 10]],
[[16, 17, 18, 19, 20],
[16, 17, 18, 19, 20]]])
如何使用p
获取所需的片段m
?