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D3.js arc.padRadius() Function

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  • Last Updated : 09 Jul, 2021
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The d3.padRadius() function is used to set the pad radius in the arc. If pad radius is provided then it sets the pad radius to the specified function or number and returns this arc generator.

If radius is not provided then it returns the current pad radius accessor, which is by defaults to null, that indicates the pad radius auto computed as sqrt(innerRadius * innerRadius + outerRadius * outerRadius). The pad radius compute the fixed linear distance separating adjacent arcs, defined as padRadius * padAngle.

Syntax: 

arc.padRadius([radius])

Parameters: This method accepts a single parameter as mentioned above and described below:

  • radius: The value of pad radius.

Return : It returns an arc with specified pad radius.

Example 1:

HTML




<!DOCTYPE html>
<html lang="en">
 
<head>
    <meta charset="UTF-8" />
    <meta name="viewport"
        content="width=device-width,
                initial-scale=1.0"/>
 
 
    <script src=
    </script>
</head>
 
<body>
    <div style="width:300px; height:300px;">
        <center>
           
   
            <h2 style="color:black">
                d3.arcpad()
            </h2
   
        </center>
         
        <svg width="200" height="200">
        </svg>
    </div>
 
    <script>
        var svg = d3.select("svg")
            .append("g")
            .attr("transform", "translate(150,50)");
 
        // padding radius =10
        var arcpad = d3.arc()
            .innerRadius(48)
            .outerRadius(50)
            .padRadius(10)
            .startAngle(90)
            .endAngle(2 * 180);
 
        svg.append("path")
            .attr("class", "arc")
            .attr("d", arcpad)
            .attr("fill","red");
    </script>
</body>
 
</html>

Output :

Example 2:

HTML




<!DOCTYPE html>
<html lang="en">
 
<head>
    <meta charset="UTF-8" />
    <meta name="viewport"
        content="width=device-width,
                initial-scale=1.0"/>
 
 
    <script src=
    </script>
</head>
 
<body>
    <div style="width:300px; height:300px;">
        <center>
           
   
            <h2 style="color:black">
                d3.arcpad()
            </h2
   
        </center>
         
        <svg width="200" height="200">
        </svg>
    </div>
 
    <script>
        var svg = d3.select("svg")
            .append("g")
            .attr("transform", "translate(150,50)");
 
        // padding radius =5
        var arcpad = d3.arc()
            .innerRadius(48)
            .outerRadius(50)
            .padRadius(5)
            .startAngle(10)
            .endAngle(5);
 
        svg.append("path")
            .attr("class", "arc")
            .attr("d", arcpad)
            .attr("fill","red");
    </script>
</body>
 
</html>

Output :


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