Matrix Class

 1using System;
 2using FinMath.LinearAlgebra;
 3using FinMath.Statistics.Distributions;
 4
 5namespace FinMath.Samples
 6{
 7    class Program
 8    {
 9        static void Main()
10        {
11+Constructing Matrices11-            #region Constructing Matrices
12 
13             // Way #1: no arguments. Creates a matrix with 0 columns and 0 rows.
14             Matrix m1 = new Matrix(2);
15             Console.WriteLine($"m1 = {m1}");
16             Console.WriteLine();
17 
18             // Way #1: specify the order. All elements are set to 0.
19             Matrix m2 = new Matrix(3);
20             Console.WriteLine($"m2 = {m2}");
21             Console.WriteLine();
22 
23             // Way #3: specify the order. All elements are set to 10.
24             Matrix m3 = new Matrix(2, 10.0);
25             Console.WriteLine($"m3 = {m3}");
26             Console.WriteLine();
27 
28             // Way #3: specify the size. All elements are set to 10.
29             Matrix m4 = new Matrix(2, 3, 10.0);
30             Console.WriteLine($"m4 = {m4}");
31             Console.WriteLine();
32 
33             // Way #4: specify the elements of the vector as a double array. 
34             Double[,] elements = { { 1.0, 2.0, 3.0 }, { 4.0, 5.0, 6.0 } };
35             Matrix m5 = new Matrix(elements);
36             Console.WriteLine($"m5 = {m5}");
37             Console.WriteLine();
38 
39             // Way #5: specify a univariate distribution
40             Matrix m6 = Matrix.Random(2, 3, new Normal(0.0, 5.0));
41             Console.WriteLine($"m6 = {m6:F}");
42             Console.WriteLine();
43 
44             // Way #5: specify a multivariate distribution
45             Matrix m7 = Matrix.Random(new MatrixNormal(2, 3));
46             Console.WriteLine($"m7 = {m7:F}");
47             Console.WriteLine();
48 
49             #endregion
50
51+Matrix Properties51-            #region Matrix Properties
52 
53             // The size property
54             Console.WriteLine($"m2.Size = {m2.Size}");
55             Console.WriteLine();
56 
57             // The rows property
58             Console.WriteLine($"m2.Rows = {m2.Rows}");
59             Console.WriteLine();
60 
61             #endregion
62
63+Accessing Matrix Elements63-            #region Accessing Matrix Elements
64 
65             // The Matrix class defines an indexer property that takes
66             // a zero-based index.
67             Console.WriteLine($"m2[2,0] = {m2[2, 0]}");
68             Console.WriteLine();
69             // You can assign to this property.
70             m2[2, 0] = 9.0;
71             Console.WriteLine($"m2[2,0] = {m2[2, 0]}");
72             Console.WriteLine();
73 
74             #endregion
75        }
76    }
77}