frontend/d3.html at gh-pages · emerging-tech/frontend · GitHub

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<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>Emerging tech</title>
  <style type="text/css">
  body{font-family: sans-serif;} label{display:block;}
  path {
    stroke: #08f;
    fill: none;
    stroke-width: 2;
  }
  </style>

</head>
<body>

  <script src="bower_components/pubnub/web/pubnub.min.js"></script>
  <script src="bower_components/d3/d3.min.js"></script>
  <script type="text/javascript">

    var byId = document.getElementById.bind(document);

    var pubnub = PUBNUB.init({
      subscribe_key: 'sub-c-9c92c072-698f-11e4-97dd-02ee2ddab7fe',
      publish_key: 'pub-c-10a63f9f-359c-472b-a6ba-d55766a60e69'
    });


var width = 300,
    height = 200;

var x = d3.time.scale()
    .range([0, width]);

var y = d3.scale.linear()
    .range([height, 0]);

var line = d3.svg.line()
    .x(function(d) { return x(d.time); })
    .y(function(d) { return y(d.value); });

var svg = d3.select("body").append("svg")
    .attr("width", width)
    .attr("height", height)

var path = svg.append("path");

    var data = {}

    // write the messages into the pre divs
    pubnub.subscribe({
      channel: 'outbound,network_def',
      backfill: true,
      callback: function(message, _stuff, channel){
        if(channel == 'outbound'){
          if(message.node && message.payload && message.node == 'e884'){

            var value = parseInt(message.payload.substr(0,4),16),
                points = (data[message.node] = data[message.node] || []);

                console.log(value)
            points.push({
              time: + new Date,
              value: value
            })

            while(points.length > 50){
              points.shift()
            }

            x.domain(d3.extent(points, function(d) { return d.time; }));
            y.domain(d3.extent(points, function(d) { return d.value; }));

            path.attr("d", line(points));


           }
          // data.message[mess]
        }
        // var element = byId(channel);
        // if(element)
        //   element.innerText = JSON.stringify(message, null, 2);
      }
    });

  </script>
</body>
</html>