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Percentage Calculation

Events are signals that let you execute specific actions—such as sending data to the server, and so on—using JavaScript, in response to any interactions/updates for a chart. 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, percentage calculation, and events.

This article focuses on how you can calculate the percentage of a data plot with respect to all the data plots using jquery-fusioncharts component.

A chart configured to calculate the percent, is shown below:

FusionCharts will load here..
{
    "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 code to render a chart using require is given below:

// Include fusioncharts
var FusionCharts = require('fusioncharts');

// Include chart modules
var Charts = require('fusioncharts/fusioncharts.charts');

// Include the theme file
var FusionTheme = require('fusioncharts/themes/fusioncharts.theme.fusion');

var $ = require('jquery');
var jQueryFusionCharts = require('jquery-fusioncharts');

// Resolve Charts as dependency for FusionCharts
Charts(FusionCharts); 

// Resolve Fusion theme as dependency for FusionCharts
FusionTheme(FusionCharts); 

// Resolve FusionCharts as dependency for jqueryFusionCharts
jQueryFusionCharts(FusionCharts); 

$('document').ready(function () {
    // bind beforeDataUpdate and dataUpdated events
    $('#chart-container').bind('fusionchartsbeforedataupdate', function (event, args) {
        $('#message').append('beforeDataUpdate, ');
    });
    $('#chart-container').bind('fusionchartsdataupdated', function (event, args) {
        $('#message').append('dataUpdated, ');
    });

    $('#chart-container').insertFusionCharts({
        type: 'column2d',
        width: '700',
        height: '400',
        dataFormat: 'json',
        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"
            }]
        }
    });

    // bind drawComplete and renderComplete events
    $('#chart-container').bind('fusionchartsdrawcomplete', function (event, args) {
        $('#message').append('drawComplete, ');
    });
    $('#chart-container').bind('fusionchartsrendercomplete', function (event, args) {
        $('#message').append('renderComplete');
    });
});

The HTML template of the above sample is shown below:

<div id="chart-container">
    FusionCharts will render here
</div>
<p style="padding: 10px; background: rgb(245, 242, 240);" id="message">
    <b>Status:</b>
</p>

The above chart has been rendered using the following steps:

  1. Included the necessary libraries and components using import. For example, jquery-fusioncharts, fusioncharts, etc.

  2. Resolve charts as dependency for FusionCharts, Fusion Theme and jquery-fusioncharts.

  3. Stored the chart configuration in a JSON object. In the JSON object:

    • The chart type has been set to column2d. Find the complete list of chart types with their respective alias here.
    • The width and height of the chart has been set in pixels.
    • The dataFormat is set as JSON.
    • The json data has been embedded as the value of the dataSource.

  4. Used FusionChart's jQuery method insertFusionCharts() to create FusionCharts.

  5. In the above sample:

    • beforeDataUpdate and dataUpdated events are binded.
    • renderComplete event calculates and stores the total value of the chart data.

  6. Created an HTML template to render the chart.