The d3.areaRadial() method in D3.js returns an area radial generator with the default settings for creating radial areas. A radial area generator uses angle and radius accessors for creating the area. Radial areas are always positioned relative to the origin.
Syntax:
d3.areaRadial()
Parameters: This method does not accept any parameters.
Return Value: This method does not return any value.
Below given are a few examples of d3.areaRadial() method in D3.js;
Example 1:
HTML
<!DOCTYPE html> <html>   <head>     </script> </head>   <body>     <h1 style="text-align: center;              color: green;">         neveropen     </h1>     <h3 style="text-align: center;">         D3.js | d3.areaRadial() Method     </h3>     <center>         <svg id="gfg" width="200" height="200">             <g transform="translate(100,100)"></g>         </svg>     </center>     <script>         var points = [             { x: 0, y: 0 },             { x: 2, y: 3 },             { x: 4, y: 12 },             { x: 6, y: 8 },             { x: 8, y: 17 },             { x: 10, y: 15 },             { x: 12, y: 20 }];           var xScale = d3.scaleLinear()             .domain([0, 6])             .range([0, 2 * Math.PI]);         var yScale = d3.scaleLinear()             .domain([0, 20])             .range([90, 30]);           // Use the areaRadial() method         // to get an area generator         var Gen = d3.areaRadial()             .angle(d => xScale(d.x))             .innerRadius(d => yScale(d.y / 3))             .outerRadius(d => yScale(d.y));           d3.select("#gfg")             .select("g")             .append("path")             .attr("d", Gen(points))             .attr("fill", "green")             .attr("stroke", "black");     </script> </body>   </html> |
Output:
Example 2:
HTML
<!DOCTYPE html> <html>   <head>     </script> </head>   <body>     <h1 style="text-align: center;              color: green;">         neveropen     </h1>     <h3 style="text-align: center;">         D3.js | d3.areaRadial() Method     </h3>     <center>         <svg id="gfg" width="500" height="500">             <g transform="translate(180,180)"></g>         </svg>     </center>     <script>         var data = [             { x: 10, y: 1 },             { x: 15, y: 3 },             { x: 20, y: 5 },             { x: 25, y: 7 },             { x: 30, y: 9 },             { x: 35, y: 11 },             { x: 40, y: 13 }];           var xScale = d3.scaleLinear()             .domain([0, 8])             .range([25, 200]);         var yScale = d3.scaleLinear()             .domain([0, 20])             .range([200, 25]);           // Use the areaRadial() method         // to get an area generator         var Gen = d3.areaRadial()             .angle(d => xScale(d.x))             .innerRadius(d => yScale(d.y / 3))             .outerRadius(d => yScale(d.y));           d3.select("#gfg")             .select("g")             .append("path")             .attr("d", Gen(data))             .attr("fill", "green")             .attr("stroke", "black");     </script> </body>   </html> |
Output:
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