Logarithmic axis in EJ2 TypeScript 3D Chart control

10 Jan 202416 minutes to read

Logarithmic axis uses logarithmic scale and it is very useful in visualizing data, when it has numerical values in both lower order of magnitude (eg: 10-6) and higher order of magnitude (eg: 106).

import { Chart3D, DateTime3D, Legend3D, Logarithmic3D, ColumnSeries3D, Tooltip3D, Highlight3D } from '@syncfusion/ej2-charts';
Chart3D.Inject(ColumnSeries3D, DateTime3D, Logarithmic3D,  Legend3D, Tooltip3D, Highlight3D);

let chartData: any[] = [
    { x: new Date(1995, 0, 1), y: 80 }, { x: new Date(1996, 0, 1), y: 200 },
    { x: new Date(1997, 0, 1), y: 400 }, { x: new Date(1998, 0, 1), y: 600 },
    { x: new Date(1999, 0, 1), y: 700 }, { x: new Date(2000, 0, 1), y: 1400 },
    { x: new Date(2001, 0, 1), y: 2000 }, { x: new Date(2002, 0, 1), y: 4000 },
    { x: new Date(2003, 0, 1), y: 6000 }, { x: new Date(2004, 0, 1), y: 8000 },
    { x: new Date(2005, 0, 1), y: 11000 }
];

let chart: Chart3D = new Chart3D({
    primaryXAxis: {
        valueType: 'DateTime'
    },
    primaryYAxis:
    {
        valueType: 'Logarithmic'
    },
    series: [
        {
            type: 'Column', xName: 'x', yName: 'y',
            dataSource: chartData
        }
    ],
    wallColor: 'transparent',
    enableRotation: true,
    rotation: 7,
    tilt: 10,
    depth: 100
}, '#element');
<!DOCTYPE html>
<html lang="en">

<head>
    <title>EJ2 Animation</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta name="description" content="Typescript UI Controls" />
    <meta name="author" content="Syncfusion" />
    <link href="index.css" rel="stylesheet" />
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <script src="systemjs.config.js"></script>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>

<body>
    <div id='loader'>Loading....</div>
    <div id='container'>
        <div id='element'></div>
    </div>
</body>

</html>

Note: To use logarithmic axis, we need to inject Logarithmic3D module using the Chart3D.Inject(Logarithmic3D) method and set the valueType of the axis to Logarithmic.

Range

The range of an axis will be calculated automatically based on the provided data and it can also be customized by using the minimum, maximum and interval properties of the axis.

import { Chart3D, DateTime3D, Legend3D, Logarithmic3D, ColumnSeries3D, Tooltip3D, Highlight3D } from '@syncfusion/ej2-charts';
Chart3D.Inject(ColumnSeries3D, DateTime3D, Logarithmic3D,  Legend3D, Tooltip3D, Highlight3D);

let chartData: any[] = [
    { x: new Date(1995, 0, 1), y: 80 }, { x: new Date(1996, 0, 1), y: 200 },
    { x: new Date(1997, 0, 1), y: 400 }, { x: new Date(1998, 0, 1), y: 600 },
    { x: new Date(1999, 0, 1), y: 700 }, { x: new Date(2000, 0, 1), y: 1400 },
    { x: new Date(2001, 0, 1), y: 2000 }, { x: new Date(2002, 0, 1), y: 4000 },
    { x: new Date(2003, 0, 1), y: 6000 }, { x: new Date(2004, 0, 1), y: 8000 },
    { x: new Date(2005, 0, 1), y: 11000 }
];

let chart: Chart3D = new Chart3D({
    primaryXAxis: {
        valueType: 'DateTime'
    },
    primaryYAxis:
    {
        valueType: 'Logarithmic',
        minimum: 100,
        maximum: 10000,
        interval: 1000
    },
    series: [
        {
            type: 'Column', xName: 'x', yName: 'y',
            dataSource: chartData
        }
    ],
    wallColor: 'transparent',
    enableRotation: true,
    rotation: 7,
    tilt: 10,
    depth: 100
}, '#element');
<!DOCTYPE html>
<html lang="en">

<head>
    <title>EJ2 Animation</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta name="description" content="Typescript UI Controls" />
    <meta name="author" content="Syncfusion" />
    <link href="index.css" rel="stylesheet" />
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <script src="systemjs.config.js"></script>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>

<body>
    <div id='loader'>Loading....</div>
    <div id='container'>
        <div id='element'></div>
    </div>
</body>

</html>

Logarithmic base

Logarithmic base can be customized by using the logBase property of the axis. For example when the logBase is 5, the axis values follows 5-2, 5-1, 50, 51, 52 etc.

import { Chart3D, DateTime3D, Legend3D, Logarithmic3D, ColumnSeries3D, Tooltip3D, Highlight3D } from '@syncfusion/ej2-charts';
Chart3D.Inject(ColumnSeries3D, DateTime3D, Logarithmic3D,  Legend3D, Tooltip3D, Highlight3D);

let chartData: any[] = [
    { x: new Date(1995, 0, 1), y: 80 }, { x: new Date(1996, 0, 1), y: 200 },
    { x: new Date(1997, 0, 1), y: 400 }, { x: new Date(1998, 0, 1), y: 600 },
    { x: new Date(1999, 0, 1), y: 700 }, { x: new Date(2000, 0, 1), y: 1400 },
    { x: new Date(2001, 0, 1), y: 2000 }, { x: new Date(2002, 0, 1), y: 4000 },
    { x: new Date(2003, 0, 1), y: 6000 }, { x: new Date(2004, 0, 1), y: 8000 },
    { x: new Date(2005, 0, 1), y: 11000 }
];

let chart: Chart3D = new Chart3D({
    primaryXAxis: {
        valueType: 'DateTime'
    },
    primaryYAxis:
    {
        valueType: 'Logarithmic',
        logBase: 2
    },
    //Initializing Chart Series
    series: [
        {
            type: 'Column', xName: 'x', yName: 'y', columnSpacing: 0.1,
            dataSource: chartData
        }
    ],
    wallColor: 'transparent',
    enableRotation: true,
    rotation: 7,
    tilt: 10,
    depth: 100
}, '#element');
<!DOCTYPE html>
<html lang="en">

<head>
    <title>EJ2 Animation</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta name="description" content="Typescript UI Controls" />
    <meta name="author" content="Syncfusion" />
    <link href="index.css" rel="stylesheet" />
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <script src="systemjs.config.js"></script>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>

<body>
    <div id='loader'>Loading....</div>
    <div id='container'>
        <div id='element'></div>
    </div>
</body>

</html>

Logarithmic interval

The interval of the logarithmic axis can be customized by using the interval property in the axis. When the logarithmic base is 10 and logarithmic interval is 2, then the axis labels are placed at an interval of 102. The default value of the interval is 1.

import { Chart3D, DateTime3D, Legend3D, Logarithmic3D, ColumnSeries3D, Tooltip3D, Highlight3D } from '@syncfusion/ej2-charts';
Chart3D.Inject(ColumnSeries3D, DateTime3D, Logarithmic3D,  Legend3D, Tooltip3D, Highlight3D);

let chartData: any[] = [
    { x: new Date(1995, 0, 1), y: 80 }, { x: new Date(1996, 0, 1), y: 200 },
    { x: new Date(1997, 0, 1), y: 400 }, { x: new Date(1998, 0, 1), y: 600 },
    { x: new Date(1999, 0, 1), y: 700 }, { x: new Date(2000, 0, 1), y: 1400 },
    { x: new Date(2001, 0, 1), y: 2000 }, { x: new Date(2002, 0, 1), y: 4000 },
    { x: new Date(2003, 0, 1), y: 6000 }, { x: new Date(2004, 0, 1), y: 8000 },
    { x: new Date(2005, 0, 1), y: 11000 }
];

let chart: Chart3D = new Chart3D({
    primaryXAxis: {
        valueType: 'DateTime'
    },
    primaryYAxis:
    {
        valueType: 'Logarithmic',
        interval: 2
    },
    series: [
        {
            type: 'Column', xName: 'x', yName: 'y',
            dataSource: chartData
        }
    ],
    wallColor: 'transparent',
    enableRotation: true,
    rotation: 7,
    tilt: 10,
    depth: 100
}, '#element');
<!DOCTYPE html>
<html lang="en">

<head>
    <title>EJ2 Animation</title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta name="description" content="Typescript UI Controls" />
    <meta name="author" content="Syncfusion" />
    <link href="index.css" rel="stylesheet" />
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <script src="systemjs.config.js"></script>
<script src="https://cdn.syncfusion.com/ej2/syncfusion-helper.js" type ="text/javascript"></script>
</head>

<body>
    <div id='loader'>Loading....</div>
    <div id='container'>
        <div id='element'></div>
    </div>
</body>

</html>