pure-js-chart

pure-js-chart

pure js line-chart render to png ,no canvas or any browser apis, all in javascript

纯粹使用js实现的一个线形图表，可以直接输出png，不使用canvas或者其他浏览器接口，只有js

usage

const chart = require('./chart').create({width: 500, height: 200});
let datas = [24, 57, 70, 100, 130, 120, 110, 170, 160, 110];
let pngArrayBuffer = chart.draw(datas);

//save to file
require('fs').writeFileSync('output.png', Buffer.from(png));
//or covert to dataurl
let dataURL = 'data:image/png;base64,' + Buffer.from(pngArrayBuffer).toString('base64');

thanks to

• Xiaolin Wu's line algorithm
• Dr. Dobb's Journal.Bresenham's algorithm
• UPNG
• pako

author

https://github.com/play175/pure-js-chart