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D3.js lineRadial() Method

Last Updated : 30 Mar, 2023
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The d3.lineRadial() method is used to construct a new Radial line generator with the default settings. The Radial line generator is then used to make a Radial line.

Syntax:

d3.lineRadial();

Parameters: This method does not accept any parameters.

Return Value: This method returns a Radial line Generator.

Example 1: The following example makes a Radial curve line using this method.

HTML 
<!DOCTYPE html>
<html>

<head>
    <script src="
https://cdnjs.cloudflare.com/ajax/libs/d3/4.2.2/d3.min.js">
    </script>

    <script src="
https://d3js.org/d3.v4.min.js">
    </script>
</head>

<body>
    <h1 style="text-align:center;color: green;">
        GeeksforGeeks
    </h1>
    <center>
        <svg id="gfg" width="200" height="200">
            <g transform="translate(100, 100)"></g>
        </svg>
    </center>

    <script>
        var lineRadialGenerator = d3.lineRadial();
        var data = [
            [0, 10],
            [3.14 * .5, 35],
            [3.14 * .75, 55],
            [3.14, 60],
            [3.14 * 1.25, 65],
            [3.14 * 1.5, 70],
            [3.14 * 1.75, 75],
            [3.14 * 2, 80],
            [3.14 * 2.25, 85],
            [3.14 * 2.5, 90],
            [3.14 * 2.75, 95],
            [3.14 * 3, 100],
            [3.14 * 3.25, 105],
            [3.14 * 3.5, 110]];

        var a = lineRadialGenerator(data);

        d3.select("#gfg")
            .select("g")
            .append("path")
            .attr("d", a)
            .attr("fill", "none")
            .attr("stroke", "green");
    </script>
</body>

</html>

Output:

Example 2:

HTML 
<!DOCTYPE html>
<html>

<head>
    <meta charset="utf-8">

    <script src="
https://cdnjs.cloudflare.com/ajax/libs/d3/4.2.2/d3.min.js">
    </script>
    <script src=
        "https://d3js.org/d3.v4.min.js">
    </script>
</head>

<body>
    <h1 style="text-align:center; color:green;">
        GeeksforGeeks</h1>
    <center>
        <svg id="gfg" width="200" height="200">
            <g transform="translate(100, 100)"></g>
        </svg>
    </center>

    <script>
        var lineRadialGenerator = d3.lineRadial();
        var data = [
            [0, 80],
            [(Math.PI * 0.25), 80],
            [(Math.PI * 0.5), 80],
            [(Math.PI * 0.75), 80],
            [(Math.PI), 80],
            [(Math.PI * 1.25), 80],
            [(Math.PI * 1.5), 80],
            [(Math.PI * 1.75), 80],
            [(Math.PI * 2), 80]
        ];
        var a = lineRadialGenerator(data);

        d3.select("#gfg")
            .select("g")
            .append("path")
            .attr("d", a)
            .attr("fill", "none")
            .attr("stroke", "green");
    </script>
</body>

</html>

Output:


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D3.js lineRadial.radius() method

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