The chord.sortChords() function in D3.js is used to set the chord comparator to the specified function or null and returns this chord layout.
Syntax:
chord.sortChords(compare);
Parameters: This function accepts a single parameter as mentioned above and described below
- compare: This parameter is the function to set the chord comparator.
Return Value: This function returns the chord layout.
Below programs illustrate the chord.sortChords() function in D3.js
Example 1:
HTML
<!DOCTYPE html> <html>
<head>
<meta charset="utf-8">
</head>
<body>
<center>
<h1 style="color:green;">GeeksForGeeks</h1>
<h3>D3.js | chord.sortChords() Function</h3>
<div id="GFG"></div>
<script>
// Create the svg area
var svg = d3.select("#GFG")
.append("svg")
.attr("width", 440)
.attr("height", 220)
.append("g")
.attr("transform", "translate(220,220)");
// Create input data
var data = [[51, 148, 60, 71, 34, 5, 1],
[ 10, 161, 80, 80, 12, 34, 53],
[175, 71, 16, 68, 0 , 0, 3],
[13, 990, 9, 69, 76, 35, 4],
[175, 71, 16, 68, 0 , 0, 3],
[13, 990, 9, 69, 76, 35, 4],
[51, 148, 60, 71, 34, 5, 1]];
// Give this matrix to d3.chord()
var chords = d3.chord()
.padAngle(0.2)
.sortSubgroups(d3.ascending)
// Use of chord.sortChords() Function
.sortChords(d3.ascending)(data)
svg.datum(chords)
.append("g")
.selectAll("g")
.data(function (d) { return d.groups; })
.enter()
.append("g")
.append("path")
.style("fill", "purple")
.style("stroke", "black")
.attr("d", d3.arc()
.innerRadius(170)
.outerRadius(200)
);
svg.datum(chords)
.append("g")
.selectAll("path")
.data(function (d) { return d; })
.enter()
.append("path")
.attr("d", d3.ribbon()
.radius(180)
)
.style("fill", "blue")
.style("stroke", "black");
</script>
</center>
</body>
</html>
|
Output:
Example 2:
HTML
<!DOCTYPE html> <html>
<head>
<meta charset="utf-8">
<script src=
</script>
<script src=
</script>
</head>
<body>
<center>
<h1 style="color:green;">GeeksForGeeks</h1>
<h3>D3.js | chord.sortChords() Function</h3>
<div id="GFG"></div>
<script>
// Create the svg area
var svg = d3.select("#GFG")
.append("svg")
.attr("width", 400)
.attr("height", 200)
.append("g")
.attr("transform", "translate(200,200)");
// Create input data
var data = [[0, 71, 89, 68, 71, 89, 68],
[ 11, 0, 60, 71, 9, 9, 0],
[ 10, 145, 0, 85, 145, 0, 85],
[ 13, 9, 9, 0, 0, 60, 71],
[ 13, 9, 9, 0, 0, 60, 71],
[ 10, 145, 0, 85, 145, 0, 85],
[0, 71, 89, 68, 71, 89, 68]];
// 4 groups, so create a vector of 4 colors
var colors_1 = [d3.schemeSet1[0], d3.schemeCategory10[1],
d3.schemeCategory10[2], d3.schemeCategory10[3],
d3.schemeCategory10[4], d3.schemeCategory10[5],
d3.schemeCategory10[6]];
var colors = [d3.schemeSet1[0], d3.schemeSet1[1],
d3.schemeSet1[2], d3.schemeSet1[3],
d3.schemeSet1[4], d3.schemeSet1[5],
d3.schemeSet1[6]];
// Give this matrix to d3.chord()
var chords = d3.chord()
.padAngle(0.2)
.sortSubgroups(d3.ascending)
// Use of chord.sortChords() Function
.sortChords(d3.descending)(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(180)
);
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, i) {
return colors_1[i]
})
.style("stroke", "black");
</script>
</center>
</body>
</html>
|
Output: