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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