Math.net libraries

import clr
import System
import os
clr.AddReferenceToFileAndPath("C:\\Program Files\\ANSYS Inc\\v201\\Addins\\ACT\\bin\\Win64\\MathNet.Numerics.dll")
 

# Example 1

import MathNet

from MathNet.Numerics.LinearAlgebra import *

V=Vector[System.Double].Build

M=Matrix[System.Double].Build

 

m = M.Random(3,4)

v = V.Random(3)

 

r=v*m

print r

 

# Example 2

import MathNet.Numerics.LinearAlgebra as la

 

from System import Array as sys_array

def array(*x): return sys_array[float](x) #float is equivalent to .Net double

 

A = la.Double.Matrix.Build.DenseOfRowArrays(

array(3, 2,-1),

array(2,-2,4),

array(-1,.5,-1)

)

 

b = la.Double.Vector.Build.DenseOfArray(array(1, -2, 0))

x = A.Solve(b)

 

print x

 

# Example 3

A1 = la.Double.Matrix.Build.DenseOfRowArrays(

array(3.0, 4.0, -1.0, 0.0),

array(4.0, 5.0, 0.0, -1.0),

array(5.0, 6.0, 0.0, 0.0),

array(6.0, 7.0, 0.0, 0.0)

)

b1 = la.Double.Vector.Build.DenseOfArray(array(0, 0, 20, 0))

x1 = A1.Solve(b1)

 

print x1