MatrixKt

Introduction

MatrixKt is a maths library that enables the use of matrices and matrix operations in Kotlin. The documentations are available at Docs.md.

	This is a hobby project and needs some more documentations. The code is almost complete, but lacks documentations

Features

This library supports almost all the basics matrix operations like:
Addition, Subtraction, Multiplication, Scalar Multiplication, Negation, Transpose, Determinant, Inverse, Minors, Cofactors, Adjoint, Echelon forms, Rank

The library also provide util function like:

Individual row/column getters, Row/column transforms, Row/column swapping, Iterators, forEach, forEachIndexed etc...

Basic Usage

All the matrix operations are done using the Matrix class. To create a matrix, use the following code;

import matrix.Matrix

val A = Matrix(arrayOf(
	1,2,
	3,4
), 2, 2)

This creates a 2x2 matrix.

Accessing elements

For accessing the element at (i,j) use A[i,j]
Where A is a Matrix.

NOTE: indices start from 0.

The matrix generated is also mutable. You can update/set value at (i,j) by using A[i,j] = b
Where A is a Matrix instance, b is Number

Basic Operations

You add, subtract, cross multiply two matrices. You can use +, - and * for the operations. Example:

import matrix.Matrix
import matrix.minus
import matrix.plus
import matrix.times

val A = Matrix(arrayOf(
    1,2,3,
    4,5,6,
    7,8,9
), 3, 3)
val B = Matrix(arrayOf(
    4,3,1,
    8,9,4,
    1,3,5
), 3, 3)

//Addition
val C = A + B
//Subraction
val D = A - B
//Multiplication
val E = A * B

Here C holds the matrix sum of A and B
D holds the matrix subtraction of A and B
E holds the matrix cross product between A and B

Operations are as simple as that!

You can also do stuff like finding the transpose, minor matrix, cofactor, adjoint, determinant, row and column transforms, rank etc.

For the full docs read here

TODO

• Documentation
• Testings
• Publications