是你想要的嗎?
In [37]: a = np.array([(0,0,8)
....: ,(0,1,5)
....: ,(0,2,3)
....: ,(1,0,4)
....: ,(1,1,0)
....: ,(1,2,0)
....: ,(2,0,1)
....: ,(2,1,2)
....: ,(2,2,5)])
In [38]:
In [38]: a
Out[38]:
array([[0, 0, 8],
[0, 1, 5],
[0, 2, 3],
[1, 0, 4],
[1, 1, 0],
[1, 2, 0],
[2, 0, 1],
[2, 1, 2],
[2, 2, 5]])
In [39]:
In [39]: a[:, 2].reshape(3,len(a)//3)
Out[39]:
array([[8, 5, 3],
[4, 0, 0],
[1, 2, 5]])
或更靈活一點(後您的comment):
In [48]: a[:, 2].reshape([int(len(a) ** .5)] * 2)
Out[48]:
array([[8, 5, 3],
[4, 0, 0],
[1, 2, 5]])
說明:
這給你的第3列(值):
In [42]: a[:, 2]
Out[42]: array([8, 5, 3, 4, 0, 0, 1, 2, 5])
In [49]: [int(len(a) ** .5)]
Out[49]: [3]
In [50]: [int(len(a) ** .5)] * 2
Out[50]: [3, 3]
另外,請解釋如何得到結果數組? – Divakar
....這就是我要求的.... – ibi0tux
問題是模棱兩可的...我的信息缺失。你ñ例如,你正在創建一個9x3的3x3陣列...它似乎你只想要最後一列..但爲什麼要一個3x3陣列? –