The areaRadial.innerRadius() method is used to set or return the innerRadius accessor of the areaRadial. It can be a number or a function that returns a number representing the innerRadius of our areaRadial.
Syntax:
areaRadial.innerRadius(inner_Rad);
Parameters: This method accepts single parameter as mentioned above and described below:
- inner_Rad: This parameter holds the innerRadius that can be a number or a function returning the innerRadius.
Return Value: This method returns the innerRadius accessor function of the area radial.
Example 1:
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.innerRadius() 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: 1},                 {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()              .angle(d => xScale(d.x/2))                // Setting innerRadius function              .innerRadius(d => yScale(d.x/4))              .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 >     < 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.innerRadius() 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]);           var Gen = d3.areaRadial()              .angle(d => xScale(d.x))                // Setting innerRadius function              .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: