Property in Amcharts to set balloon alignment? - amcharts

Question

Does anybody have any idea about the property that changes the alignment of the balloon in amcharts to the one in figure 1. By default the balloon alignment in the charts rendered in my project is as in figure 2, which sometimes leads to truncation and overflow as shown in figure 3 if the balloon-text is too long.Hoping that alignment of balloon-text as shown in figure 1 will help me resolve this issue.

Answer 1

What you are probably looking for is a fixed position for the rollover balloon.
This can be achieved by setting fixedPosition in your balloon settings. I.e.:
"balloon": {
"fixedPosition": true
}
Another solution is to enable chart cursor. When chart cursor is enabled all balloons will be adaptively displayed either to the left or to the right of the column center.
Here's a chart cursor that is set up to not display anything beyond a single balloon of the hovered column segment:
"chartCursor": {
"cursorAlpha": 0,
"oneBalloonOnly": true
}
Finally, the very long continuous strings can be a problem as well. I suggest you use \n symbol to add line break points into those. I.e.:
"title": "North Americaaaaa\naaaaaaaaaaaaaaaaaaaaaaaaaa\naaaaaaaaaaaaaaaaaaaaaa",
Here's a complete working demo:
var chart = AmCharts.makeChart("chartdiv", {
"type": "serial",
"theme": "light",
"legend": {
"horizontalGap": 10,
"maxColumns": 1,
"position": "right",
"useGraphSettings": true,
"markerSize": 10
},
"dataProvider": [{
"year": 2003,
"europe": 2.5,
"namerica": 2.5,
"asia": 2.1,
"lamerica": 0.3,
"meast": 0.2,
"africa": 0.1
}, {
"year": 2004,
"europe": 2.6,
"namerica": 2.7,
"asia": 2.2,
"lamerica": 0.3,
"meast": 0.3,
"africa": 0.1
}, {
"year": 2005,
"europe": 2.8,
"namerica": 2.9,
"asia": 2.4,
"lamerica": 0.3,
"meast": 0.3,
"africa": 0.1
}],
"valueAxes": [{
"stackType": "regular",
"axisAlpha": 0.3,
"gridAlpha": 0
}],
"graphs": [{
"balloonText": "<b>[[title]]</b><br><span style='font-size:14px'>[[category]]: <b>[[value]]</b></span>",
"fillAlphas": 0.8,
"labelText": "[[value]]",
"lineAlpha": 0.3,
"title": "Europe",
"type": "column",
"color": "#000000",
"valueField": "europe"
}, {
"balloonText": "<b>[[title]]</b><br><span style='font-size:14px'>[[category]]: <b>[[value]]</b></span>",
"fillAlphas": 0.8,
"labelText": "[[value]]",
"lineAlpha": 0.3,
"title": "North Americaaaaa\naaaaaaaaaaaaaaaaaaaaaaaaaa\naaaaaaaaaaaaaaaaaaaaaa",
"type": "column",
"color": "#000000",
"valueField": "namerica"
}, {
"balloonText": "<b>[[title]]</b><br><span style='font-size:14px'>[[category]]: <b>[[value]]</b></span>",
"fillAlphas": 0.8,
"labelText": "[[value]]",
"lineAlpha": 0.3,
"title": "Asia-Pacific",
"type": "column",
"color": "#000000",
"valueField": "asia"
}, {
"balloonText": "<b>[[title]]</b><br><span style='font-size:14px'>[[category]]: <b>[[value]]</b></span>",
"fillAlphas": 0.8,
"labelText": "[[value]]",
"lineAlpha": 0.3,
"title": "Latin America",
"type": "column",
"color": "#000000",
"valueField": "lamerica"
}, {
"balloonText": "<b>[[title]]</b><br><span style='font-size:14px'>[[category]]: <b>[[value]]</b></span>",
"fillAlphas": 0.8,
"labelText": "[[value]]",
"lineAlpha": 0.3,
"title": "Middle-East",
"type": "column",
"color": "#000000",
"valueField": "meast"
}, {
"balloonText": "<b>[[title]]</b><br><span style='font-size:14px'>[[category]]: <b>[[value]]</b></span>",
"fillAlphas": 0.8,
"labelText": "[[value]]",
"lineAlpha": 0.3,
"title": "Africa",
"type": "column",
"color": "#000000",
"valueField": "africa"
}],
"balloon": {
"fixedPosition": true,
"maxWidth": 10000
},
"chartCursor": {
"cursorAlpha": 0,
"oneBalloonOnly": true
},
"categoryField": "year",
"categoryAxis": {
"gridPosition": "start",
"axisAlpha": 0,
"gridAlpha": 0,
"position": "left"
},
"export": {
"enabled": true
}
});
#chartdiv {
width: 1000px;
height: 500px;
}
<script src="http://www.amcharts.com/lib/3/amcharts.js"></script>
<script src="http://www.amcharts.com/lib/3/serial.js"></script>
<script src="http://www.amcharts.com/lib/3/themes/light.js"></script>
<div id="chartdiv"></div>