date-based value axis

If you take a close look at this chart, you will notice that grid lines are above the columns - equally dividing them into segments. This is an optional feature, of course. It allows you creating the charts close to the ones described by famous data visualization guru, <a href="http://www.edwardtufte.com/">Edward Tufte</a>, in his book "The Visual Display of Quantitative Information". <h2>From columns to bars - one simple step</h2> Click EDIT button on top of the chart, and add this text to the source (anywhere within curly brackets): <strong>"rotate":true,</strong>. Run the script and... The columns should became bars, category axis should be vertical now and value axis - horizontal! This is the only property you change to make this trick. All our Serial charts can be rotated in the same way.

by amcharts

HTML

<script type="text/javascript" src="http://www.amcharts.com/lib/3/amcharts.js"></script>
<script type="text/javascript" src="http://www.amcharts.com/lib/3/serial.js"></script>
<script type="text/javascript" src="http://www.amcharts.com/lib/3/themes/none.js"></script>
<div id="chartdiv"></div>

CSS

#chartdiv {
	width		: 100%;
	height		: 500px;
	font-size	: 11px;
}

JavaScript

var chart = AmCharts.makeChart("chartdiv", {
    "type": "serial",
    "theme": "none",
    "dataProvider": [{
        "country": "USA",
        "visits": 1303135000000
    }, {
        "country": "China",
        "visits": 1393300000000 
    }],
    "valueAxes": [{
        "gridColor":"#FFFFFF",
		"gridAlpha": 0.2,
		"dashLength": 0,
        "labelFunction":labelFunction
    }],
    "gridAboveGraphs": true,
    "startDuration": 1,
    "graphs": [{
        "balloonText": "[[category]]: <b>[[value]]</b>",
        "fillAlphas": 0.8,
        "lineAlpha": 0.2,
        "type": "column",
        "valueField": "visits"		
    }],
    "chartCursor": {
        "categoryBalloonEnabled": false,
        "cursorAlpha": 0,
        "zoomable": false
    },
    "categoryField": "country",
    "categoryAxis": {
        "gridPosition": "start",
        "gridAlpha": 0
    },
	"exportConfig":{
	  "menuTop": 0,
	  "menuItems": [{
      "icon": '/lib/3/images/export.png',
      "format": 'png'	  
      }]  
	}
});

function labelFunction(value){
    console.log(value)
    var date = new Date(value);
    return AmCharts.formatDate(date, "DD-MM-YYYY");
}