The areaRadial.angle() method is used to set or gets the angle accessor. The angle must be a number or a function that returns a number representing an angle in radians.
Syntax:
areaRadial.angle(angle);
Parameters: This method accepts single parameter as mentioned above and described below:
- angle: This parameter holds an angle that can be a number or a function returning the angle ranging (0 to 2π) radians.
Return Value: This method returns the angle accessor of the area radial.
Example 1: The following example sets the angle using this method.
HTML
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <script src= </script> </head> <body> <h1 style="text-align: center; color: green;"> neveropen </h1> <h3 style="text-align: center;"> D3.js | areaRadial.angle() 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]); var Gen = d3.areaRadial() // Setting the angle function .angle(d => xScale(d.x*4)) .innerRadius(d => yScale(d.y/6)) .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: The following example demonstrates getting the function for the angle.
HTML
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <script src= </script> </head> <body> <h1 style="text-align: center; color: green;"> neveropen </h1> <h3 style="text-align: center;"> D3.js | areaRadial.angle() 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]); var Gen = d3.areaRadial() // Setting the angle function .angle(d => xScale(d.x*4)) .innerRadius(d => yScale(d.y/6)) .outerRadius(d => yScale(d.y)); d3.select("#gfg") .select("g") .append("path") .attr("d", Gen(points)) .attr("fill", "green") .attr("stroke", "black"); console.log(Gen.angle); console.log(Gen.angle()); </script> </body> </html> |
Output:
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