V3: Column rotated series

HTML

<script src="http://www.amcharts.com/lib/3/amcharts.js"></script>
<script src="http://www.amcharts.com/lib/3/serial.js"></script>
<div id="chartdiv" style="width: 100%; height: 362px;"></div>
<input type="text" id="category" value="France">
<input type="button" value="show" onclick="showBalloonAtCategory()">

JavaScript

var chart;
var chartCursor;
var chartData = [
    {
        "country": "USA",
        "visits": 3025,
        "color": "#FF0F00"
    },
    {
        "country": "China",
        "visits": 1882,
        "color": "#FF6600"
    },
    {
        "country": "Japan",
        "visits": 1809,
        "color": "#FF9E01"
    },
    {
        "country": "Germany",
        "visits": 1322,
        "color": "#FCD202"
    },
    {
        "country": "UK",
        "visits": 1122,
        "color": "#F8FF01"
    },
    {
        "country": "France",
        "visits": 1114,
        "color": "#B0DE09"
    },
    {
        "country": "India",
        "visits": 984,
        "color": "#04D215"
    },
    {
        "country": "Spain",
        "visits": 711,
        "color": "#0D8ECF"
    },
    {
        "country": "Netherlands",
        "visits": 665,
        "color": "#0D52D1"
    },
    {
        "country": "Russia",
        "visits": 580,
        "color": "#2A0CD0"
    },
    {
        "country": "South Korea",
        "visits": 443,
        "color": "#8A0CCF"
    },
    {
        "country": "Canada",
        "visits": 441,
        "color": "#CD0D74"
    }
];


AmCharts.ready(function () {
    // SERIAL CHART
    chart = new AmCharts.AmSerialChart();
    chart.dataProvider = chartData;
    chart.categoryField = "country";
    chart.startDuration = 1;
    
    // AXES
    // category
    var categoryAxis = chart.categoryAxis;
    categoryAxis.labelRotation = 45; // this line makes category values to be rotated
    categoryAxis.gridAlpha = 0;
    categoryAxis.fillAlpha = 1;
    categoryAxis.fillColor = "#FAFAFA";
    categoryAxis.gridPosition = "start";
    
    // value
    var valueAxis = new AmCharts.ValueAxis();
    valueAxis.dashLength = 5;
    valueAxis.title = "Visitors from country";
    valueAxis.axisAlpha = 0;
    chart.addValueAxis(valueAxis);
    
    // GRAPH
    var graph = new AmCharts.AmGraph();
    graph.valueField = "visits";
    graph.colorField = "color";
   ...