使用向量Python初始化矩阵

Question

I want to initialize a Matrix with 3 vectors. The special part about is that I want the vectors to be the columns the matrix.

Vx= np.zeros((npoints,))
Vy=np.zeros((npoints,))
Vz=np.zeros((npoints,))
V=np.matrix(([Vx,Vy,Vz]))

Now the problem here is that the vectors form the rows of the matrix. How can I fix that?

Answer 1

您可以使用np.column_stack ：

V = np.column_stack([Vx, Vy, Vz])

Answer 2

numpy中有一个速记：

V = np.c_[Vx, Vy, Vz]

Answer 3

unutbu解决方案的替代方法是使用np.vstack或np.hstack

V = np.matrix(np.vstack((Vx, Vy, Vz)).T)