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Configuring your Chart using AngularJS

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

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');

// Include 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>

The above chart has been rendered using the following steps:

  1. Include the necessary libraries and components using require. For example, angularjs-fusioncharts, fusioncharts, etc.

  2. Add the chart and the theme as dependencies to the core.

  3. Store the chart configurations in a JSON object.

  4. In the above sample, to update the chart generate random data using Math.random().

  5. Add updateData() function to randomly update the value of the chart when the button is clicked.

  6. Add controls.innerHTML to create the button inside the <div>.

  7. 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 alias 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 update the chart caption, sub-caption alignment and chart background dynamically, is shown below (click any one of the buttons shown below the chart to change the chart background and caption, sub-caption alignment):

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');

// Include 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"
        },
        "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 chartRef = evt.sender;

            chartRef.originalData = JSON.parse(JSON.stringify(chartRef.getJSONData()));

            chartRef.changeBackground = function() {
                var data = chartRef.getJSONData(); //copy of object
                data.chart.bgColor = '#efefef';
                chartRef.setJSONData(data);
            };

            // Resets all the chart data to it's initial verison
            chartRef.resetAttr = function() {
                chartRef.setJSONData(chartRef.originalData);
            };

            // Makes the caption text left aligned
            chartRef.makeCaptionLeft = function() {
                var data = chartRef.getJSONData();
                data.chart.captionAlignment = 'left';
                chartRef.setJSONData(data);
            };


            var btnContainer = document.createElement('div'),
                str;

            // buttons 
            str = '<button id="bgColorBtn" 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;">Change Chart Background</button>&nbsp&nbsp';
            str += '<button id="captionAlignBtn" 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;">Make Caption Text Left-Aligned</button>&nbsp&nbsp';
            str += '<button id="resetAttrBtn" 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;">Reset Attributes</button>';

            btnContainer.style.cssText = "text-align: center; width: 100%; margin: 10px;";
            btnContainer.innerHTML = str;
            //button attachment
            args.container.parentNode.insertBefore(btnContainer, args.container.nextSibling);
        },

        "renderComplete": function(evt, args) {
            var chartRef = evt.sender,
                bgColorBtn = document.getElementById('bgColorBtn'),
                captionAlignBtn = document.getElementById('captionAlignBtn'),
                resetAttrBtn = document.getElementById('resetAttrBtn');

            bgColorBtn.onclick = chartRef.changeBackground;
            captionAlignBtn.onclick = chartRef.makeCaptionLeft;
            resetAttrBtn.onclick = chartRef.resetAttr;
        }
    }
}

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="bgColorBtn()">Change chart background color</a>
<a class="btn btn-default" ng-click="captionAlignBtn()">Make Caption text left-aligned</a>
<a class="btn btn-default" ng-click="resetAttrBtn()">Reset Attributes</a>
</p>

The above chart has been rendered using the following steps:

  1. Included the necessary libraries and components using require. For example, angularjs-fusioncharts, fusioncharts, etc.

  2. Add the chart and the theme as dependencies to the core.

  3. Store the chart configurations in a JSON object. In this 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 (in pixels).
    • Set the dataFormat as JSON.
    • Embed the json data as the value of the dataSource.

  4. An event is triggered:

    • To update the chart caption, sub-capion alignment.
    • To update the backgroing color.
    • Reset all the chart data to it's initial version.

  5. A container is created to render buttons in the chart.

  6. Add the <div> with an fc-chart directive in your HTML, assuming that it is inside a controller named MyController.