glpk.js

glpk.js

JavaScript (emscripten) port of GLPK (GNU Linear Programming Kit).

Rather than porting the complete GLPK library (including GLPSOL) this project aims at creating a simple JSON interface to setup and solve LP/MILP with JavaScript.

Usage

const glpk = require('../glpk.js');

let lp = {
  name: 'LP',
  objective: {
    direction: glpk.GLP_MAX,
    name: 'obj',
    vars: [
      { name: 'x1', coef: 0.6 },
      { name: 'x2', coef: 0.5 }
    ]
  },
  subjectTo: [
    {
      name: 'cons1',
      vars: [
        { name: 'x1', coef: 1.0 },
        { name: 'x2', coef: 2.0 }
      ],
      bnds: { type: glpk.GLP_UP, ub: 1.0, lb: 0.0 }
    },
    {
      name: 'cons2',
      vars: [
        { name: 'x1', coef: 3.0 },
        { name: 'x2', coef: 1.0 }
      ],
      bnds: { type: glpk.GLP_UP, ub: 2.0, lb: 0.0 }
    }
  ]
};

console.log(
  glpk.solve(lp, glpk.GPL_MSG_ALL)
);

Examples

• http://jvail.github.io/dairy.js/
• https://zalf-lse.github.io/solid-dss/

Acknowledgements

The research leading to these results has received funding from the European Community’s Seventh Framework Programme (FP7/2007–2013) under grant agreement No. FP7-266367 (SOLID).