amcharts Radar simple

HTML

<script src="http://www.amcharts.com/lib/3/amcharts.js" type="text/javascript"></script>
<div id="chartdiv" style="width: 100%; height: 362px;"></div>

JavaScript

var chart;

var chartData = [{
    country: "Czech Republic",
    litres: 156.90},
{
    country: "Ireland",
    litres: 131.10},
{
    country: "Germany",
    litres: 115.80},
{
    country: "Australia",
    litres: 109.90},
{
    country: "Austria",
    litres: 108.30},
{
    country: "UK",
    litres: 99.00}];

AmCharts.ready(function() {
    // RADAR CHART
    chart = new AmCharts.AmRadarChart();
    chart.dataProvider = chartData;
    chart.categoryField = "country";
    chart.startDuration = 2;

    // VALUE AXIS
    var valueAxis = new AmCharts.ValueAxis();
    valueAxis.axisAlpha = 0.15;
    valueAxis.minimum = 0;
    valueAxis.dashLength = 3;
    valueAxis.axisTitleOffset = 20;
    valueAxis.gridCount = 5;
    chart.addValueAxis(valueAxis);

    // GRAPH
    var graph = new AmCharts.AmGraph();
    graph.valueField = "litres";
    graph.bullet = "round";
    graph.balloonText = "[[value]] litres of beer per year";
    chart.addGraph(graph);

    // WRITE
    chart.write("chartdiv");
});