I am new to javascript and am creating a piechart which loads data from a comma separated file data.txt but I cannot see anything in the browser when I open the html file.
data.txt consists the following data -
United States,9252
China,1882
Japan,1809
Germany,1322
United Kingdom,1122
India,984
My html code is-
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>amCharts examples</title>
<link rel="stylesheet" href="style.css" type="text/css">
<script src="amcharts/amcharts.js" type="text/javascript"></script>
<script type="text/javascript">
var chart;
var dataProvider;
window.onload = function() {
createChart();
loadCSV("data.csv");
}
// method which loads external data
function loadCSV(file) {
if (window.XMLHttpRequest) {
// IE7+, Firefox, Chrome, Opera, Safari
var request = new XMLHttpRequest();
}
else {
// code for IE6, IE5
var request = new ActiveXObject('Microsoft.XMLHTTP');
}
// load
request.open('GET', file, false);
request.send();
parseCSV(request.responseText);
}
// method which parses csv data
function parseCSV(data){
//replace UNIX new lines
data = data.replace (/\r\n/g, "\n");
//replace MAC new lines
data = data.replace (/\r/g, "\n");
//split into rows
var rows = data.split("\n");
// create array which will hold our data:
dataProvider = [];
// loop through all rows
for (var i = 0; i < rows.length; i++){
// this line helps to skip empty rows
if (rows[i]) {
// our columns are separated by comma
var column = rows[i].split(",");
// column is array now
// first item is date
var country = column[0];
// second item is value of the second column
var visits = column[1];
// third item is value of the fird column
// create object which contains all these items:
var dataObject = {country:country, visits:visits};
// add object to dataProvider array
dataProvider.push(dataObject);
}
}
// set data provider to the chart
chart.dataProvider = dataProvider;
// this will force chart to rebuild using new data
chart.validateData();
}
function createChart(){ // PIE CHART
chart = new AmCharts.AmPieChart();
// title of the chart
chart.addTitle("Visitors countries", 16);
chart.titleField = "country";
chart.valueField = "visits";
chart.sequencedAnimation = true;
chart.startEffect = "elastic";
chart.innerRadius = "30%";
chart.startDuration = 2;
chart.labelRadius = 15;
chart.pullOutEffect = "elastic";
chart.pullOutDuration = 1;
// the following two lines makes the chart 3D
chart.depth3D = 10;
chart.angle = 15;
// WRITE
chart.write("chartdiv");
}
</script>
</head>
<body>
<div id="chartdiv" style="width:600px; height:400px;"></div>
</body>
I have taken the code from http://blog.amcharts.com/2011/03/amcharts-javascript-tutorials-part-2.html and changed it according to piechart. Please tell me what am I doing wrong. I have placed data.txt in the same folder as the html file and have not hosted the file on a web server
