@jones.tristand/integrators
v1.0.1
Published
A simple package containing methods for numerical integration of systems of differential equations.
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@jones.tristand/integrators
A simple package containing methods for numerical integration of systems of differential equations. Includes a simple Euler integrator and a fourth-order Runge-Kutta (RK4) integrator. This package also includes typings in the package and can be used with TypeScript directly.
Installation
$ npm install --save @jones.tristand/integrators
Usage
JavaScript
var integrators = require('@jones.tristand/integrators');
var y0 = [1, 1];
var dydt = function(y, t) {
return [
y[0], // dydt[0] = y[0]
y[1] // dydt[1] = y[1]
]
};
var t0 = 0;
var dt = 0.01;
var rk = new integrators.rk4(y0, dydt, t0, dt);
rk.step(100);
console.log(rk.y);
// Output: [ 2.718281828234404, 2.718281828234404 ]
TypeScript
import { rk4, euler } from '@jones.tristand/integrators';
const y0:number[] = [1, 1];
const dydt = (y:number[], t:number):number[] => {
return [
y[0], // dydt[0] = y[0]
y[1] // dydt[1] = y[1]
]
};
const t0:number = 0;
const dt:number = 0.01;
var rk = new rk4(y0, dydt, t0, dt);
rk.step(100);
console.log(rk.y);
// Output: [ 2.718281828234404, 2.718281828234404 ]
Testing
$ npm test
License
MIT © Tristan Jones