设置对角线很简单:
import numpy as np
a = np.random.randint(0,10,(11,10)) # I notice your matrix is not square!
In [31] a
Out[31]:
array([[0, 7, 6, 0, 8, 6, 4, 1, 0, 9],
[4, 7, 6, 0, 3, 4, 6, 6, 9, 2],
[2, 3, 9, 6, 2, 3, 0, 0, 2, 7],
[5, 9, 6, 8, 3, 3, 0, 8, 3, 5],
[0, 0, 7, 0, 4, 8, 2, 4, 8, 7],
[3, 3, 1, 6, 6, 4, 9, 5, 1, 2],
[8, 1, 8, 4, 9, 6, 6, 4, 2, 7],
[0, 8, 0, 1, 1, 9, 9, 7, 7, 1],
[9, 2, 6, 2, 8, 9, 4, 8, 0, 8],
[4, 4, 2, 7, 7, 4, 4, 7, 8, 6],
[5, 3, 5, 8, 1, 7, 3, 5, 5, 7]])
np.fill_diagonal(a,a[:,0])
In [33] a
Out[33]:
array([[0, 7, 6, 0, 8, 6, 4, 1, 0, 9],
[4, 4, 6, 0, 3, 4, 6, 6, 9, 2],
[2, 3, 2, 6, 2, 3, 0, 0, 2, 7],
[5, 9, 6, 5, 3, 3, 0, 8, 3, 5],
[0, 0, 7, 0, 0, 8, 2, 4, 8, 7],
[3, 3, 1, 6, 6, 3, 9, 5, 1, 2],
[8, 1, 8, 4, 9, 6, 8, 4, 2, 7],
[0, 8, 0, 1, 1, 9, 9, 0, 7, 1],
[9, 2, 6, 2, 8, 9, 4, 8, 9, 8],
[4, 4, 2, 7, 7, 4, 4, 7, 8, 4],
[5, 3, 5, 8, 1, 7, 3, 5, 5, 7]])
但是,如果你想做一个转化/旋转,那么你必须确定你想怎么这样的事情发生(我不知道你是如何工作的是在非方形矩阵上)。
举例说明预期的输入以及期望的输出以及迄今为止解决该问题的代码。 – shuttle87
我试过用这样的代码使用np.argmin函数:b = a [:,np.argmin(a,axis = 1)]。 –
你在找什么样的确切转换?请尝试用精确的数学术语解释。 – shuttle87