Zabulonov.MatrixLib 1.0.3

About MatrixLib

A simple library for working with matrices, contains the basic functionality and api that may be useful to you 😃

Changes in the new version 1.0.2!

Major changes:

• NEW! AddAsRow();<br /> Updates the current matrix by replacing the selected row with a double array.
• NEW! AddAsColumn();<br /> Updates the current matrix by replacing the selected column with a double array.
• Updated the documentation in the readme.

Installation

Package Manager

NuGet\Install-Package Zabulonov.MatrixLib -Version 1.0.2

.NET CLI

dotnet add package Zabulonov.MatrixLib --version 1.0.2

Working with the matrix

First, include the library:

using MatrixLib;

Creating a matrix

To create a matrix, just type:

Matrix matrix = new Matrix(rowsLength, columnsLength);

You can also create a matrix from a double[,] array:

double[,] arr1 = new double[3, 3] { { 1, 2, 3 }, { 4, 5, 6 }, { 7, 8, 0 } };

Matrix m1 = new Matrix(arr1);

Accessing Matrix Elements

Implemented indexed access to matrix elements using matrixName[row, column] For example:

Matrix m1 = new Matrix(arr1);

Console.WriteLine(m1[2,2]);

You can also run foreach in the matrix, it will go through all the elements of the matrix.

foreach (var item in m1)
{
    Console.WriteLine(item);
}

Operators

For ease of use, all operators have been overloaded: +, -, *, /, !=, ==

So for example you can use * to multiply 2 matrices or to multiply an entire matrix by a number:

var m3 = m1 * m2;

m3 *= 5;

Or if you want to compare 2 matrices or 2 matrix elements:

if (m1 == m2)
    Console.WriteLine("true");
// - - -
if (m1[1,1] == m2[1,1])
    Console.WriteLine("true");

Functions

Available Functions:

• isSquare(); <br /> Returns boolean. Checks whether the matrix is square (rows == columns)
• MinorMatrix(); <br /> Returns a new minor matrix from an existing one.
• Det();<br /> Returns a double, determine the current matrix. The matrix must be square!
• Equals();<br /> Returns boolean. Compares 2 matrices, you can also use the == operator.
• GetHashCode();<br /> Returns unique(I hope) hash code
• GetRow(int number);<br /> Returns the selected row/column as a double array.
• GetColumn(int number);<br /> Returns the selected row/column as a double array.
• Transpose();<br /> Returns a new transposed matrix from the current one.
• ToDoubleArray();<br /> Converts the current matrix to a double array.
• CWGetMatrix();<br /> Displays the current matrix in the console.
• AddAsRow();<br /> Updates the current matrix by replacing the selected row with a double array.
• AddAsColumn();<br /> Updates the current matrix by replacing the selected column with a double array.