scipy tutorial - Baustatik-Info-Server

SciPy Reference Guide, Release 0.8.dev
Notes
The determinant is computed via LU factorization, LAPACK routine z/dgetrf.
norm(a, ord=None)
Matrix or vector norm.
This function is able to return one of seven different matrix norms, or one of an infinite number of vector norms
(described below), depending on the value of the ord parameter.
Notes
Parameters
x : array_like, shape (M,) or (M, N)
Input array.
ord : {non-zero int, inf, -inf, ‘fro’}, optional
Returns
n : float
Order of the norm (see table under Notes). inf means numpy’s inf object.
Norm of the matrix or vector.
For values of ord >> from numpy import linalg as LA
>>> a = np.arange(9) - 4
>>> a
array([-4, -3, -2, -1, 0, 1, 2, 3, 4])
>>> b = a.reshape((3, 3))
>>> b
array([[-4, -3, -2],
[-1, 0, 1],
[ 2, 3, 4]])
220 Chapter 3. Reference