The d3.lineRadial.angle() method is a radial line accessor method. It sets or returns the angle accessor. If the angle is provided, it must be a number or a function that returns a number representing an angle in radians.
Syntax:
d3.lineRadial.angle( angle );
Parameters:
- angle: This method takes an angle that can be a number or a function returning the angle.
Return Value: This method returns the angle accessor of the Radial line.
Example 1: Setting the angle using this method. For setting radius, we have used lineRadial.radius() method.
HTML
<!DOCTYPE html> <html>   <head>     <meta charset="utf-8">     <script src=     </script>     <script src=     </script> </head>   <body>     <h1 style="text-align:center; color:green;">         neveropen     </h1>           <center>         <svg id="gfg" width="200" height="200">             <g transform="translate(100,100)"></g>         </svg>     </center>       <script>         var lineRadialGenerator = d3.lineRadial();         var data = [             { angle: 0, radius: 10 },             { angle: 3.14 * .5, radius: 35 },             { angle: 3.14 * .75, radius: 55 },             { angle: 3.14, radius: 60 },             { angle: 3.14 * 1.25, radius: 65 },             { angle: 3.14 * 1.5, radius: 70 },             { angle: 3.14 * 1.75, radius: 75 },             { angle: 3.14 * 2, radius: 80 },             { angle: 3.14 * 2.25, radius: 85 },             { angle: 3.14 * 2.5, radius: 90 },             { angle: 3.14 * 2.75, radius: 95 },             { angle: 3.14 * 3, radius: 100 },             { angle: 3.14 * 3.25, radius: 105 },             { angle: 3.14 * 3.5, radius: 110 }         ];           var lineRadialGenerator = d3.lineRadial()             .angle((d) => d.angle)             .radius((d) => d.radius);           d3.select("#gfg")             .select("g")             .append("path")             .attr("d", lineRadialGenerator(data))             .attr("fill", "none")             .attr("stroke", "green");     </script> </body>   </html> |
Output:
Example 2: Getting the function for the angle.
HTML
<!DOCTYPE html> <html>   <head>     <meta charset="utf-8">     <script src=     </script>     <script src=     </script> </head>   <body>     <h1 style="text-align:center; color:green;">         neveropen     </h1>           <center>         <svg id="gfg" width="200" height="200">             <g transform="translate(100,100)"></g>         </svg>     </center>       <script>         var lineRadialGenerator = d3.lineRadial();         var data = [             { angle: 0, radius: 10 },             { angle: 3.14 * .5, radius: 35 },             { angle: 3.14 * .75, radius: 55 },             { angle: 3.14, radius: 60 },             { angle: 3.14 * 1.25, radius: 65 },             { angle: 3.14 * 1.5, radius: 70 },             { angle: 3.14 * 1.75, radius: 75 },             { angle: 3.14 * 2, radius: 80 },             { angle: 3.14 * 2.25, radius: 85 },             { angle: 3.14 * 2.5, radius: 90 },             { angle: 3.14 * 2.75, radius: 95 },             { angle: 3.14 * 3, radius: 100 },             { angle: 3.14 * 3.25, radius: 105 },             { angle: 3.14 * 3.5, radius: 110 }         ];           var lineRadialGenerator = d3.lineRadial()             .angle((d) => d.angle)             .radius((d) => d.radius);           d3.select("#gfg")             .select("g")             .append("path")             .attr("d", lineRadialGenerator(data))             .attr("fill", "none")             .attr("stroke", "green");           console.log(lineRadialGenerator.angle());         console.log(lineRadialGenerator.angle);     </script> </body>   </html> |
Output:
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