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D3.js arc.outerRadius() Function

  • Last Updated : 23 Sep, 2020
Geek Week

The arc.outerRadius() function in d3.js library is used to set the outer radius of the produced arc. It takes a number that defines the outer radius of the arc.

Syntax:

arc.outerRadius([radius]);

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

  • radius: This defines the size of the outer radius of the arc.

Return Value: This function does not return anything.

Below given are a few examples of the function given above.



Example 1:

HTML




<!DOCTYPE html>
<html lang="en">
  
<head>
    <meta charset="UTF-8" />
    <meta name="viewport" content=
        "width=device-width, initial-scale=1.0" />
  
    <!--Fetching from CDN of D3.js -->
    <script src=
    </script>
</head>
  
<body>
    <div style="width:300px; height:300px;">
        <center>
            <h1 style="color:green">
                GeeksforGeeks
            </h1>
            <h2>
                arc.outerRadius()
            </h2>
        </center>
        <svg width="300" height="300">
        </svg>
    </div>
      
    <script>
        var svg = d3.select("svg")
            .append("g")
            .attr("transform", "translate(150, 100)");
  
        // An arc will be produced
        var arc = d3.arc()
            .innerRadius(85)
            // Use of outerRadius Function 
            .outerRadius(88)
            .startAngle(0)
            .endAngle(10);
  
        svg.append("path")
            .attr("class", "arc")
            .attr("d", arc);
  
        let p = document.querySelector(".arc");
        p.style.fill = "green";
    </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" />
  
    <!--Fetching from CDN of D3.js -->
    <script src="https://d3js.org/d3.v6.min.js">
    </script>
</head>
  
<body>
    <div style="width:300px; height:300px;">
        <center>
            <h1 style="color:green">
                GeeksforGeeks
            </h1>
            <h2>
                arc.outerRadius()
            </h2>
        </center>
        <svg width="300" height="300">
        </svg>
    </div>
      
    <script>
        var svg = d3.select("svg")
            .append("g")
            .attr("transform", "translate(150, 100)");
  
        // An arc will be produced
        var arc = d3.arc()
            .innerRadius(0)
            // Use of outerRadius Function 
            .outerRadius(65)
            .startAngle(0)
            .endAngle(10);
  
        svg.append("path")
            .attr("class", "arc")
            .attr("d", arc);
  
        let p = document.querySelector(".arc");
        p.style.fill = "green";
    </script>
</body>
  
</html>

Output:

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