smoothie: Lightweight JavaScript library for smooth real-time charts in the browser
Providing real-time, smoothly updating charts in the browser is a challenge. London-based developer Joe Walnes has tackled the problem with Smoothie Charts, a lightweight JavaScript library that uses <canvas>
to do just that.
A quick example from the project homepage:
// Randomly add a data point every 500ms
var random = new TimeSeries();
setInterval(function() {
random.append(new Date().getTime(), Math.random() * 10000);
}, 500);
function createTimeline() {
var chart = new SmoothieChart();
chart.addTimeSeries(random, { strokeStyle: 'rgba(0, 255, 0, 1)', fillStyle: 'rgba(0, 255, 0, 0.2)', lineWidth: 4 });
chart.streamTo(document.getElementById("chart"), 500);
}
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