The d3.lineRadial.radius() method is a radial line accessor method. It sets or gets the radius accessor. If the radius is provided, it must be a number or a function that returns a number representing the radius.
Syntax:
d3.lineRadial.radius(radius);
Parameters:
- radius: This method takes the radius that can be a number or a function returning the radius.
Return Value: This method returns the radius accessor of the Radial line.
Example 1: Setting the radius using this method. For setting angle here we have used lineRadial.angle() function.
<!DOCTYPE html> < html >
< meta charset = "utf-8" >
< head >
< title >D3.js | d3.lineRadial.radius()</ title >
</ head >
< script src =
</ script >
< body >
< h1 style = "text-align: center; color: green;" >
GeeksforGeeks
</ h1 >
< center >
< svg id = "gfg" width = "200" height = "200" >
< g transform = "translate(100, 100)" ></ g >
</ svg >
</ center >
</ body >
< 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 >
</ html >
|
Output:
Example 2: getting the function for the radius.
<!DOCTYPE html> < html >
< meta charset = "utf-8" >
< head >
< title >D3.js | d3.lineRadial.radius()</ title >
</ head >
< script src =
</ script >
< body >
< h1 style = "text-align: center; color: green;" >
GeeksforGeeks
</ h1 >
< center >
< svg id = "gfg" width = "200" height = "200" >
< g transform = "translate(100, 100)" ></ g >
</ svg >
</ center >
</ body >
< 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.radius()); console.log(lineRadialGenerator.radius); </ script >
</ html >
|
Output: