The chord.padAngle() function in D3.js is used to set the pad angle between adjacent groups to the specified number in radians and returns the chord layout.
Syntax:
chord.padAngle([angle]);
Parameters: This function accepts a single parameter as mentioned above and described below
- angle: This parameter is the angle to set the pad angle between adjacent groups.
Return Value: This function returns the chord layout.
Below programs illustrate the chord.padAngle() function in D3.js
Example 1:
HTML
<!DOCTYPE html> <html>
<head>
<title>D3.js | chord.padAngle() Function</title>
<meta charset="utf-8">
</head>
<body>
<center>
<h1 style="color:green;">GeeksForGeeks</h1>
<h3>D3.js | chord.padAngle() Function</h3>
<div id="GFG"></div>
<script>
// Create the svg area
var svg = d3.select("#GFG")
.append("svg")
.attr("width", 340)
.attr("height", 340)
.append("g")
.attr("transform", "translate(170, 170)")
// Create input data
var data = [[10, 161, 80, 80],
[13, 990, 9, 69],
[175, 71, 16, 68],
[51, 148, 60, 71]];
// Give this matrix to d3.chord()
var chords = d3.chord()
// Use of chord.padAngle() Function
.padAngle(0.5)
(data)
svg.datum(chords)
.append("g")
.selectAll("g")
.data(function (d) { return d.groups; })
.enter()
.append("g")
.append("path")
.style("fill", "black")
.style("stroke", "black")
.attr("d", d3.arc()
.innerRadius(150)
.outerRadius(160)
)
svg.datum(chords)
.append("g")
.selectAll("path")
.data(function (d) { return d; })
.enter()
.append("path")
.attr("d", d3.ribbon()
.radius(150)
)
.style("fill", "#58b54a")
.style("stroke", "black");
</script>
</center>
</body>
</html>
|
Output:
Example 2:
HTML
<!DOCTYPE html> <html>
<head>
<title>D3.js | chord.padAngle() Function</title>
<meta charset="utf-8">
</script>
<script src=
</script>
<script src=
</script>
</head>
<body>
<center>
<h1 style="color:green;">GeeksForGeeks</h1>
<h3>D3.js | chord.padAngle() Function</h3>
<div id="GFG"></div>
<script>
// Create the svg area
var svg = d3.select("#GFG")
.append("svg")
.attr("width", 340)
.attr("height", 340)
.append("g")
.attr("transform", "translate(170, 170)")
// Create input data
var data = [[0, 71, 89, 68],
[11, 0, 60, 71],
[10, 145, 0, 85],
[13, 9, 9, 0]];
// 4 groups, so create a vector of 4 colors
var colors = [d3.schemeDark2[4], d3.schemeDark2[5],
d3.schemeDark2[6], d3.schemeDark2[7]];
// Give this matrix to d3.chord()
var chords = d3.chord()
// Use of chord.padAngle() Function
.padAngle(0.3)
.sortSubgroups(d3.ascending)
(data)
svg.datum(chords)
.append("g")
.selectAll("g")
.data(function (d) { return d.groups; })
.enter()
.append("g")
.append("path")
.style("fill", function (d, i) {
return colors[i]
})
.style("stroke", "black")
.attr("d", d3.arc()
.innerRadius(150)
.outerRadius(160)
)
svg.datum(chords)
.append("g")
.selectAll("path")
.data(function (d) { return d; })
.enter()
.append("path")
.attr("d", d3.ribbon()
.radius(150)
)
.style("fill", function (d) {
return (colors[d.source.index])
})
.style("stroke", "black");
</script>
</center>
</body>
</html>
|
Output: