D3.js chord.padAngle() Function
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"> <script src="https://d3js.org/d3.v4.js"></script> </head> <body> <center> <h1 style="color:green;">w3wiki</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 src="https://d3js.org/d3.v4.min.js"></script> <script src="https://d3js.org/d3-color.v1.min.js"> </script> <script src= "https://d3js.org/d3-interpolate.v1.min.js"> </script> <script src= "https://d3js.org/d3-scale-chromatic.v1.min.js"> </script> </head> <body> <center> <h1 style="color:green;">w3wiki</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:
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