Get x,y,value 1D arrays from 2D numpy array (linear indexing)

Question

Say I have a 2D array like the one below:

array([3, 6, 7
       1,-1, 3])

I would like to get in 3 separate arrays the x, y and value of the array . In other words:

x      = [0, 1, 0,  1, 0, 1]
y      = [0, 0, 1,  1, 2, 2]
values = [3, 1, 6, -1, 7, 3]

How can I do this?

For reference, this is what MATLAB calls linear indexing.

Answer 1

How about something like:

x, y = np.indices(array.shape)
x = x.ravel(order='F')
y = y.ravel(order='F')
values = array.ravel(order='F')

Answer 2

def xyval(A):
    x, y = np.indices(A.shape)
    return x.ravel(), y.ravel(), A.ravel()