先阐述结论:多维数组通([None, ...(M-1次), N])过其他数组([None, ...(M次)])过滤时,得到新的array是None * N大小
示例如下:
n1 = np.random.randint(1,5, size=[2,3,4,5])
n2 = np.random.randint(1,5, size=[2,3,4])
n1[n2 > 2].shape
其他示例:
np.arange(9).reshape(3, 3)
a[a[:,0] > 3]
a[np.where(a[:,0] > 3)]
-- over --