Change Chart Type at Runtime
FusionCharts Suite XT includes advanced features that let you add more context to your chart and make data visualization simpler. These features include chart updates, update chart type at runtime, and events.
This article focuses on how you can change the chart type of the chart at runtime. The chart types used in the sample is:
- Column 2D
- Bar 2D
- Pie 2D
A chart configured to change the chart type, is shown below:
{
"chart": {
"caption": "Countries With Most Oil Reserves [2017-18]",
"subCaption": "In MMbbl = One Million barrels",
"xAxisName": "Country",
"yAxisName": "Reserves (MMbbl)",
"numberSuffix": "K",
"theme": "fusion"
},
"data": [
{
"label": "Venezuela",
"value": "290"
},
{
"label": "Saudi",
"value": "260"
},
{
"label": "Canada",
"value": "180"
},
{
"label": "Iran",
"value": "140"
},
{
"label": "Russia",
"value": "115"
},
{
"label": "UAE",
"value": "100"
},
{
"label": "US",
"value": "30"
},
{
"label": "China",
"value": "30"
}
]
}
The full code of the above sample is given below:
import FusionCharts from 'fusioncharts';
import Charts from 'fusioncharts/fusioncharts.charts';
import FusionTheme from 'fusioncharts/themes/fusioncharts.theme.fusion';
// Add the chart and theme as dependency
FusionCharts.addDep(Charts);
FusionCharts.addDep(FusionTheme);
// Create an Instance with chart options
var chartInstance = new FusionCharts({
type: 'column2d',
height: '400',
width: '700',
dataFormat: 'json',
renderAt: 'chart-container',
dataSource: {
"chart": {
"caption": "Countries With Most Oil Reserves [2017-18]",
"subCaption": "In MMbbl = One Million barrels",
"xAxisName": "Country",
"yAxisName": "Reserves (MMbbl)",
"numberSuffix": "K",
"theme": "fusion"
},
"data": [{
"label": "Venezuela",
"value": "290"
}, {
"label": "Saudi",
"value": "260"
}, {
"label": "Canada",
"value": "180"
}, {
"label": "Iran",
"value": "140"
}, {
"label": "Russia",
"value": "115"
}, {
"label": "UAE",
"value": "100"
}, {
"label": "US",
"value": "30"
}, {
"label": "China",
"value": "30"
}],
},
"events": {
"beforeRender": function(e, d) {
var container = e.data.container;
// Change the sizes according to your need
var options = {
'column2d': 'column2d',
'bar2d': 'bar2d',
'pie2d': 'pie2d'
};
var chartSelected = 'column2d';
function instantiate() {
// Create option containers
var parent = container.parentNode;
var optionsContainer = document.createElement('div');
optionsContainer.id = 'config-container';
var spanLabel = document.createElement('span');
spanLabel.id = 'select-text';
spanLabel.innerText = "Choose a chart type: ";
var radioContainer = document.createElement('div');
addClass(radioContainer, 'change-type');
window.__onChange = function(option) {
e.sender.chartType(option)
}
// Util to add class
function addClass(element, className) {
var element, name = className,
arr;
arr = element.className.split(" ");
if (arr.indexOf(name) == -1) {
element.className += " " + name;
}
}
function radioWrapper(wrapperId, inputId, label, selected, optionLabel) {
var item = "<div id='" + wrapperId + "' >";
item += "<input name='dimesion-selector' id='" + inputId + "' type='radio' " + (selected ? "checked='checked'" : '') + " onchange='__onChange(\"" + optionLabel + "\")'/>";
item += "<label for='" + inputId + "' >" + label + "</label>"
item += "</div>";
return item;
}
var changeTypeChilds = '';
Object.keys(options).forEach(function(option, index) {
var label = options[option];
var selected = chartSelected === option;
var radioOption = radioWrapper('radio' + (index + 1), 'radioButton' + (index + 1), label.toUpperCase(), selected, option);
changeTypeChilds += radioOption;
});
radioContainer.innerHTML = changeTypeChilds;
optionsContainer.appendChild(spanLabel);
optionsContainer.appendChild(radioContainer);
parent.appendChild(optionsContainer);
var css = '.change-type{display:inline-block;margin:0 10px;font-family:basefontRegular,Helvetica Neue,Arial,sans-serif}.change-type>div{display:inline-flex;position:relative;margin:0 10px}.change-type label{position:relative;padding:5px 4px 5px 30px;border-radius:4px}.change-type input{opacity:0;cursor:pointer;z-index:1;width:100%;height:100%;left:0;position:absolute}.change-type label:after,.change-type label:before{content:"";position:absolute}.change-type label:before{display:block;background:#fff;border:2px solid #949697;box-shadow:none;border-radius:50%;top: 15px;left: 9px;width:1rem;height:1rem}.change-type label:after{ width: .55rem;height: .55rem;top: 18px;left: 11px;border-radius: 100%;}.change-type input:checked~label{color:#48b884;font-weight:600;box-shadow:0 4px 9px 0 rgba(104,105,128,.22)}.change-type input:checked~label:before{color:#fff;box-shadow:none;border:2px solid #48b884}.change-type input:checked~label:after{background:#55bd8d}';
var styleNode = document.createElement('style');
styleNode.innerHTML = css;
document.body.appendChild(styleNode);
}
if (!window.__sample_change_chart_type_instansiated) {
instantiate();
}
window.__sample_change_chart_type_instansiated = true;
}
}
});// Render
chartInstance.render();
The above chart has been rendered using the following steps:
Include the necessary libraries and components using
import
. For example,fusioncharts
library, etc.Add the chart and theme as dependency.
Store the chart configuration in a JSON object. In the JSON object:
- Set the chart type as
column2d
. Find the complete list of chart types with their respective alias here . - Set the width and height of the chart in pixels.
- Set the
dataFormat
as JSON. - Embed the json data as the value of
dataSource
.
- Set the chart type as
beforeRender
event is called to update the chart type fromcolumn2d
tobar2d
orpie2d
.Radio buttons are created inside the
<div>
to choose a chart type from:- Column 2D
- Bar 2D
- Pie 2D
Functionalities are added to the radio buttons to update the chart type at runtime.