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I am new to datavis and the D3 library and I'm trying to follow the tut here http://mbostock.github.com/d3/tutorial/bar-1.html
When I run the code, nothing displays on my webpage, can anyone point out the problem??
I think its something to do with the d3.select method. When I run the code and inspect it, the body is empty, so Im assuming nothing is being created. Any help would be hugely appreciated!!!
<title>3Dtut - 1</title>
<script type="text/javascript" src="http://mbostock.github.com/d3/d3.js?2.4.5"> </script>
<script type="text/javascript">
var data = [4, 8, 15, 16, 23, 42];
//container for the bar chart
var chart = d3.select("body").append("div")
.attr("class", "chart");
//adding div elements to the bar chart
chart.selectAll("div")
.data(data)
.enter().append("div")
.style("width", function(d) { return d * 10 + "px"; })
.text(function(d) { return d; });
</script>
<STYLE type="text/css">
.chart div {
font: 10px sans-serif;
background-color: steelblue;
text-align: right;
padding: 3px;
margin: 1px;
color: white;
}
</STYLE>
</head>
<body>
</body>
</html>
760
The problem is related to the position of your <script> .. </script> within the html document.
No body element exists yet at the moment that your script is being executed. That means that d3.select("body") will be empty, and no div.chart is being appended.
Try to move your <script> .. </script> inside the <body> .. </body> part. This will guarantee that the body element exists when your code is being executed.
101
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