Configuring Your Chart Using AngularJS

FusionCharts Suite XT includes advanced features that let you add context to your chart and make data visualization simpler. These features include chart updates, annotations, trend-lines, and events.

This article focuses on how you can configure the following using angularjs-fusioncharts component:

Update Chart Data

A chart configured to dynamically update data values is shown below (click Update Chart Data to start):

CHART
JSON

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 the above chart is given below:

//  Require AngularJS 
var angular = require('angular');

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

// Require angularjs-fusioncharts  
require('angularjs-fusioncharts');

// Require Chart modules 
var Charts = require('fusioncharts/fusioncharts.charts');

// Require Fusion theme
var FusionTheme = require('fusioncharts/themes/fusioncharts.theme.fusion');

// Initialize Charts with FusionCharts instance
Charts(FusionCharts);

// Initialize FusionTheme with FusionCharts instance
FusionTheme(FusionCharts);

var myApp = angular.module('myApp', ['ng-fusioncharts']);

myApp.controller('MyController', ['$scope', function($scope) {
    $scope.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",
            "updateAnimDuration": "0.3"
        },
        "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(evt, args) {
            var controls = document.createElement('div'),
                chartRef = evt.sender;

            chartRef.getRandomNumber = function() {
                var max = 300,
                    min = 50;
                return Math.round(((max - min) * Math.random()) + min);
            }
            updateData = function() {

                //clones data
                var data = Object.assign({}, chartRef.getJSONData());
                data.data[2].label = 'Canada';
                data.data[2].value = chartRef.getRandomNumber();

                data.data[3].label = 'Iran';
                data.data[3].value = chartRef.getRandomNumber();
                chartRef.setJSONData(data);
            };
            controls.innerHTML = '<button style="background-color: #6957da; border: none; border-radius: 3px; color: white; padding: 4px 12px; text-align: center; cursor: pointer; outline: none; text-decoration: none; display: inline-block; font-size: 14px;" onClick="updateData()" >Update chart data</button>';
            controls.style.cssText = 'text-align: center; width: 100%;';
            args.container.appendChild(controls);
        }
    }
}

Now, use the fusioncharts directive in a template. The HTML template is given below:

<div fusioncharts
    width="700" 
    height="400"
    type="column2d",
    datasource="{{dataSource}}"
></div>
<p><a class="btn btn-default" ng-click="updateMyChartData()">Click me to change data</a></p>

Render the above chart by following the steps mentioned below:

Include the necessary libraries (such as fusioncharts and angularjs-fusioncharts) and components using require.
Add the chart and the theme as dependencies to the core.
Store the chart configurations in a JSON object.
In the above sample, to update the chart generate random data using Math.random().
Add updateData() function to randomly update the value of the chart when the button is clicked.
Add controls.innerHTML to create the button inside the <div>.
Add the <div> with an fc-chart directive in your HTML, assuming that it is inside a controller named MyController. In the div:
- Set the chart type as column2d. Find the complete list of chart types with their respective aliases here.
- Set the width and height (in pixels).
- Embed the JSON data as the value of the dataSource.

Update Chart Attributes

A chart configured to dynamically update the alignments of chart caption and sub-caption, as well as the chart background is shown below. Click any one of the buttons below the chart to change the alignments of caption and sub-caption, as well as the chart background.

CHART
JSON