The d3.linkHorizontal() method returns a new link generator with Horizontal tangents. It is typically used when the root is on the top/bottom edge with the children going down/up.
Syntax:
var link = d3.linkHorizontal()
.x(function(d) { return d.x; })
.y(function(d) { return d.y; });
Parameters: This function does not take any parameter.
Return Value: This method returns a new link generator.
Example:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<script src=
"https://d3js.org/d3.v5.min.js">
</script>
</head>
<body>
<h1 style="text-align: center; color: green;">
GeeksforGeeks
</h1>
<h3 style="text-align: center;">
D3.js | linkHorizontal() Method
</h3>
<center>
<svg id="gfg" width="200" height="200"></svg>
</center>
<script>
var data = [
{source: [100,25], target: [200,175]},
{source: [100,25], target: [25,175]}];
// Horizontal link generator
var link = d3.linkHorizontal()
.source(function(d) {
return [d.source[1], d.source[0]];
})
.target(function(d) {
return [d.target[1], d.target[0]];
});
//Adding the link paths
d3.select("#gfg")
.selectAll("path")
.data(data)
.join("path")
.attr("d", link)
.classed("link", true);
</script>
</body>
</html>
Output:
