Package Exports

js-mat
js-mat/index.js

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Readme

js-mat

JavaScript library for representation and mathematical operations using matrix

Usage

Create a matrix of random values:

var M = Matrix.rand(3,3); // create a 3x3 matrix

Create a null matrix:

var M = Matrix.zeros(2,5); // create a 2x5 null matrix

Create a matrix of ones:

var M = Matrix.ones(2,2) // create a 2x2 matrix of ones

Create an identity matrix:

var I = Matrix.eye(4); // identity matrix of size 4x4

Create a matrix from a 2D array:

var M = Matrix.fromArray([
    [1,2,3],
    [4,5,6],
    [7,8,9]
]);

Create a matrix from another matrix

var M1 = Matrix.rand(3,6);
var M2 = Matrix.fromMatrix(M1); // equal to M1

Operations

Addition:

var M1 = Matrix.fromArray([
    [12,7,9],
    [5,-2,3]
]);
var M2 = Matrix.fromArray([
    [-3.6, 0, 5.4],
    [-12,-2,7]
]);

var result = M1.add(M2);
// [8.4, 7, 14.4]
// [-7, -4, -10]

Substraction:

var M1 = Matrix.fromArray([
    [12,7,9],
    [5,-2,3]
]);
var M2 = Matrix.fromArray([
    [-3.6, 0, 5.4],
    [-12,-2,7]
]);

var result = M1.subs(M2);
// [15.6, 7.0, 3.6]
// [17.0, 0, -4.0]

Multiplication:

// Multiply two matrices
var M1 = Matrix.fromArray([
    [1, 2, 9],
    [-3, 7, 1]
]);

var M2 = Matrix.fromArray([
    [-5, 1],
    [3, 12],
    [1, 1]
]);

var result = M1.multiply(M2);
// [10, 34]
// [37, 82]

// Multiply a matrix by a constant
var M1 = Matrix.fromArray([
    [1, 2, 9],
    [-3, 7, 1]
]);

var result = M1.multiply(5);
// [5, 10, 45]
// [-15, 35, 5]

Determinant:

var M = Matrix.fromArray([
]);