Smoothie Charts: smooooooth JavaScript charts for realtime streaming data
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npm version

Smoothie Charts is a really small charting library designed for live streaming data. I built it to reduce the headaches I was getting from watching charts jerkily updating every second.


Getting Started


Given a <canvas>:

<canvas id="chart" width="400" height="100"></canvas>

Create a time series and chart with code resembling:

// Create a time series
var series = new TimeSeries();

// Find the canvas
var canvas = document.getElementById('chart');

// Create the chart
var chart = new SmoothieChart();
chart.addTimeSeries(series, { strokeStyle: 'rgba(0, 255, 0, 1)' });
chart.streamTo(canvas, 500);

Then, add data to your time series and it will be displayed on the chart:

// Randomly add a data point every 500ms
setInterval(function() {
    series.append(, Math.random() * 10000);
}, 500);


For help, use the Smoothie Charts Google Group.

License (MIT)