删除一列的numpy数组 [英] Remove one column for a numpy array

问题描述

我有一个大小为(48，366，3)的numpy数组，我想从数组中删除最后一列以使其为(48，365，3).最好的方法是什么? (所有条目都是整数.我使用的是Python v2.6)

I have a numpy array of dimension (48, 366, 3) and I want to remove the last column from the array to make it (48, 365, 3). What is the best way to do that? (All the entries are integers. I'm using Python v2.6)

推荐答案

您可以尝试numpy.delete:

http://docs.scipy.org/doc/numpy/reference/generated/numpy.delete.html

或者只是获取所需的数组切片并将其写入新数组.

or just get the slice of the array you want and write it to a new array.

例如:

a = np.random.randint(0,2, size=(48,366,3))
b = np.delete(a, np.s_[-1:], axis=1)
print b.shape # <--- (48,365,3)

或等效地:

b = np.delete(a, -1, axis=1)

或:

b = a[:,:-1,:]

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