diagonal matrix of a matrix with numpy and scipy

Question

I have a matrix (n*1) and I want to make a diagonal matrix with it.
but I can’t construct it with numpy.
I tried each methods in numpy such as methods in this

Asked By: Babak

||

Source

Answer 1

import numpy
arr = numpy.array([1,2,3])
mat = numpy.diag(arr)
print(mat)
>>> 
[[1 0 0]
 [0 2 0]
 [0 0 3]]

Answered By: Vincent

diagonal matrix of a matrix with numpy and scipy

Question:

Answers: