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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