D3.js arc() Function

0 0 1 minute read

The d3.arc() function is used to generate an arc generator that produce a circular chart. It is based on the difference between the start angle and the end angle.

Syntax:

d3.arc();

Parameters: This function does not accept any parameters.

Return Values: This function returns an arc generator function.

Below examples illustrate the d3.arc() function in D3.js:

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=  
        "https://d3js.org/d3.v6.min.js">  
    </script> 
</head>  
  
<body>  
    <div style="width:300px; height:300px;"> 
        <center> 
            <h1 style="color:green"> 
                zambiatek 
            </h1>  
  
            <h2> 
                d3.arc() 
            </h2>  
  
        </center> 
  
        <svg width="300" height="300"> 
        </svg> 
    </div> 
  
    <script>  
        var svg = d3.select("svg") 
            .append("g") 
            .attr("transform", "translate(150,50)"); 
  
        // Function is used 
        var arc = d3.arc() 
            .innerRadius(40) 
            .outerRadius(45) 
            .startAngle(100) 
            .endAngle(2 * 180); 
  
        svg.append("path") 
            .attr("class", "arc") 
            .attr("d", arc) 
            .attr("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"> 
                zambiatek 
            </h1>  
  
            <h2>d3.arc()</h2>  
        </center> 
  
        <svg width="300" height="300"> 
        </svg> 
    </div> 
  
    <script>  
        var svg = d3.select("svg") 
            .append("g") 
            .attr("transform", "translate(150,50)"); 
  
        // An arc will be created 
        var arc = d3.arc() 
            .innerRadius(40) 
            .outerRadius(45) 
            .startAngle(10) 
            .endAngle(8); 
  
        svg.append("path") 
            .attr("class", "arc") 
            .attr("d", arc) 
            .attr("fill","green"); 
    </script>  
</body>  
  
</html>

Output:

Example 3:

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>  
    <script>  
        var svg = d3.select("svg") 
            .append("g") 
            .attr("transform", "translate(150,50)"); 
  
        // An arc generator is produced 
        var arc = d3.arc() 
            .innerRadius(40) 
            .outerRadius(45) 
            .startAngle(10) 
            .endAngle(8); 
  
        let arr=arc().split(","); 
  
        arr.forEach((e,i)=>{ 
            console.log(i,e); 
        }) 
    </script>  
</body>  
  
</html>