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Special Points Customization in JavaScript Sparkline control

02 Feb 2023 / 2 minutes to read

You can customize the points by initializing the point colors. The customization options allows to differentiate the [start], [end], [positive], [negative], and [low] points. This customization is only applicable for line, column, and area type sparklines.

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index.ts
index.html
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import { Sparkline } from '@syncfusion/ej2-charts';

let sparkline: Sparkline = new Sparkline({
    height: '150px',
       width: '130px',
       dataSource: [
               { x: 0, xval: 'AUDI', yval: 1 },
               { x: 1, xval: 'BMW', yval: 5 },
               { x: 2, xval: 'BUICK', yval: -1 },
               { x: 3, xval: 'CETROEN', yval: -6 },
               { x: 4, xval: 'CHEVROLET', yval: 0 },
               { x: 5, xval: 'FIAT', yval: 1 },
               { x: 6, xval: 'FORD', yval: -2 },
               { x: 7, xval: 'HONDA', yval: 7 },
               { x: 8, xval: 'HYUNDAI', yval: -9 },
               { x: 9, xval: 'JEEP', yval: 0 },
               { x: 10, xval: 'KIA', yval: -10 },
               { x: 11, xval: 'MAZDA', yval: 3 }
           ],
       // Assign the dataSource values to series of sparkline 'xName and yName'
       xName: 'xval', yName: 'yval',
       // Assign 'Column' as type of the sparkline
       type:'Column',
       // Assign "Category" as the value type of the sparkline
       valueType: 'Category',
       // To configure sparkline series highest y value point color.
       highPointColor:'blue',
       // To configure sparkline series lowest y value point color.
       lowPointColor:'orange',
       // To configure sparkline series first x value point color.
       startPointColor:'green',
       // To configure sparkline series last x value point color.
       endPointColor:'green',
       // To configure sparkline series negative y value point color.
       negativePointColor:'red'
   });
sparkline.appendTo("#element");
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<!DOCTYPE html>
<html lang="en">

<head>
            
    <title>Essential JS 2 for Sparkline </title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta name="description" content="Essential JS 2 for Sparkline UI Control" />
    <meta name="author" content="Syncfusion" />
    <link href="index.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/20.4.48/ej2-charts/styles/material.css" rel="stylesheet" />
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <script src="systemjs.config.js"></script>
</head>

<body>
    <div id='loader'>Loading....</div>
    <div id='container' style="margin-top: 15%;">
            <div id="element" align="center" ></div>
    </div>
</body>

</html>

Tie point color

Tie point color is used to configure the win-loss series type sparkline’s y-value point color. The following code sample shows the tie point color of sparkline series.

Source
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index.ts
index.html
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import { Sparkline } from '@syncfusion/ej2-charts';

let sparkline: Sparkline = new Sparkline({
    height: '150px',
     width: '130px',
     dataSource: [12, 15, -10, 13, 15, 6, -12, 17, 13, 0, 8, -10],
     // Assign the 'WinLoss' as type of Sparkline
     type:'WinLoss',
     // Assign "Numeric" as the value type of the sparkline
     valueType: 'Numeric',
     tiePointColor:'blue'
 });
sparkline.appendTo("#element");
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<!DOCTYPE html>
<html lang="en">

<head>
            
    <title>Essential JS 2 for Sparkline </title>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta name="description" content="Essential JS 2 for Sparkline UI Control" />
    <meta name="author" content="Syncfusion" />
    <link href="index.css" rel="stylesheet" />
    <link href="//cdn.syncfusion.com/ej2/20.4.48/ej2-charts/styles/material.css" rel="stylesheet" />
    <script src="https://cdnjs.cloudflare.com/ajax/libs/systemjs/0.19.38/system.js"></script>
    <script src="systemjs.config.js"></script>
</head>

<body>
    <div id='loader'>Loading....</div>
    <div id='container' style="margin-top: 15%;">
            <div id="element" align="center" ></div>
    </div>
</body>

</html>