Histogram

<!DOCTYPE HTML>
<html>

<head>
    <title>ninjaPixel.js Histogram</title>
</head>
<style>
    .ninja-axis path,
    .ninja-axis line {
        fill: none;
        stroke: black;
        shape-rendering: crispEdges;
    }
    .ninja-background {
        fill: #333333;
        stroke: black;
    }
    text {
        font: 12px sans-serif;
        position: absolute;
    }
    .ninja-chartTitle {
        font: 18px sans-serif;
    }
    .yTitle,
    .xTitle {
        font: 16px sans-serif;
    }
    .ninja-horizontalGrid,
    .ninja-verticalGrid {
        stroke: black;
        opacity: 0.7;
    }
</style>

<body>
    <div id="chart"></div>
    <div id="message"></div>
</body>
<script src="ninjaPixel.bundle.js" charset="utf-8"></script>
<script>
    function irwinHallDistribution(n, m) {
        var distribution = [];
        for (var i = 0; i < n; i++) {
            for (var s = 0, j = 0; j < m; j++) {
                s += Math.random();
            }
            distribution.push(s / m);
        }
        return distribution;
    }

var chart = new ninjaPixel.Histogram();
    chart.transitionDuration(2000)
        .margin({
            top: 100,
            bottom: 50,
            left: 60,
            right: 30
        })
        .height(500)
        .axesOrigin({x:0.4, y:0})
        .plotFrequency(false)
        .bins(d3.scale.linear().ticks(15))
        .title('An Irwin-Hall Distribution');

function ready() {
        var data = irwinHallDistribution(10000, 3);
//        console.log(data);
        chart.plot(d3.select("#chart")
            .datum(data));
    }

ready();

</script>

</html>