inspired by the Map function in Processing . This module scales a number from one range to another

NPM

Build Status codecov

$ npm install range-map

var rangeMap = require("range-map");
var mapped = rangeMap(50, 0, 100, 0, 1000);
//mapped == 500
var clampMapped = rangeMap(500, 0, 100, 0, 1000, true);
//clampMapped == 1000

mapped(input, inputLowest, inputHighest, outputLowest, outputHighest, [clamped=false])

returns a number that has been rounded with Math.round() The ranges will also work with negative numbers.

If clamped is truthy then output value will be clamped to the minimum and maximum output values.