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Configuring your Chart using Ember

FusionCharts Suite XT includes advanced features that let you add more context to your charts 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 the ember-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"
        }
    ]
}

Setup ember-cli-build.js

In this step we will include all the necessary files and add the dependency to create the Column 2D chart. The code is given below:

/* eslint-env node */
'use strict';

const EmberAddon = require('ember-cli/lib/broccoli/ember-addon');

module.exports = function (defaults) {
    let app = new EmberAddon(defaults, {
        // Add options here
    });

    // Import FusionCharts library
    app.import('bower_components/fusioncharts/fusioncharts.js');
    app.import('bower_components/fusioncharts/fusioncharts.charts.js');        
    app.import('bower_components/fusioncharts/themes/fusioncharts.theme.fusion.js');

    return app.toTree();
};

In the above code, include the necessary libraries and components using import. For example, ember-fusioncharts, fusioncharts, etc.

If you need to use different assets in different environments, specify an object as the first parameter. That object's keys should be the environment name and the values should be the asset to use in that environment.

Add chart data to chart-viewer.js

Add the following code to chart-viewer.js:

import Component from '@ember/component';

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

export default Component.extend({
    width: 700,
    height: 400,
    type: 'column2d',
    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"
        }]
    },
    actions: {
        updateData() {
            const prevDs = Object.assign({}, this.get('dataSource'));            
            prevDs.data[2].value = getRandomNumber();            
            prevDs.data[3].value = getRandomNumber();
            this.set('dataSource', prevDs);
        }
    }
});

In the above code:

  1. Create a chart component to render the chart.

  2. Generate random data to update the chart using Math.random().

  3. 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.

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

Add data to chart-viewer.hbs

Add the following code to chart-viewer.hbs:

{{fusioncharts-xt
    width=width
    height=height
    type=type
    dataFormat=dataFormat
    dataSource=dataSource}}

<button {{action "updateData"}}>CHANGE CHART DATA</button>

In the above code:

  1. Add the fusioncharts component to render the chart.

  2. Add a button using <button> to update the data when clicked.

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"
        }
    ]
}

Setup ember-cli-build.js

In this step, include all the necessary files and add the dependency to create the Column 2D chart. The code is given below:

/* eslint-env node */
'use strict';

const EmberAddon = require('ember-cli/lib/broccoli/ember-addon');

module.exports = function (defaults) {
    let app = new EmberAddon(defaults, {
        // Add options here
    });

    // Import FusionCharts library
    app.import('bower_components/fusioncharts/fusioncharts.js');
    app.import('bower_components/fusioncharts/fusioncharts.charts.js');        
    app.import('bower_components/fusioncharts/themes/fusioncharts.theme.fusion.js');    

    return app.toTree();
};

In the above code, include the necessary libraries and components using import. For example, ember-fusioncharts, fusioncharts, etc.

If you need to use different assets in different environments, specify an object as the first parameter. That object's keys should be the environment name and the values should be the asset to use in that environment.

Add chart data to chart-viewer.js

Add the following code to chart-viewer.js:

import Component from '@ember/component';

export default Component.extend({    
    width: 700,
    height: 400,
    type: 'column2d',
    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"
        }]
    },
    actions: {
        changeBackgroundColor() {
            const prevDs = JSON.parse(JSON.stringify(this.get('dataSource')));
            prevDs.chart.bgColor = '#efefef';
            this.set('dataSource', prevDs);
        },
        changeCaptionTextAlignment() {
            const prevDs = JSON.parse(JSON.stringify(this.get('dataSource')));            
            prevDs.chart.captionAlignment = 'left';
            this.set('dataSource', prevDs);
        },
        reset() {            
            this.set('dataSource', dataSource);
        }
    }
});

In the above code:

  1. Create a chart component to render the chart.

  2. 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.

  3. Action takes place to:

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

Add data to chart-viewer.hbs

Add the following code to chart-viewer.hbs:

{{fusioncharts-xt
    width=width
    height=height
    type=type
    dataFormat=dataFormat
    dataSource=dataSource}}

<button {{action "changeBackgroundColor"}}>CHANGE BACKGROUND</button>
<button {{action "changeCaptionTextAlignment"}}>CHANGE CAPTION ALIGNMENT</button>
<button {{action "reset"}}>RESET</button>

In the above code:

  1. Add the fusioncharts component to render the chart.

  2. Add Buttons using <button> to update the chart according to the action.