The d3.area() method in D3.js is used to return an area generator with default settings that can be further used to create areas.
Syntax:
d3.area()
Parameters: This method does not accept parameters.
Return Value: This method returns no value.
Below examples illustrate the d3.area() method in D3.js:
Example 1:
HTML
<!DOCTYPE html> <html>
<head>
</script>
</head>
<body>
<h1 style="text-align: center;
color: green;">
GeeksforGeeks
</h1>
<center>
<svg id="gfg" width="200" height="200">
</svg>
</center>
<script>
var data = [
{ x: 0, y: 10 },
{ x: 10, y: 30 },
{ x: 20, y: 150 },
{ x: 50, y: 10 },
{ x: 60, y: 150 },
{ x: 70, y: 50 },
{ x: 80, y: 190 }];
data.sort((a, b) => a.y - b.y);
var xScale = d3.scaleLinear()
.domain([0, 8])
.range([25, 200]);
var yScale = d3.scaleLinear()
.domain([0, 20])
.range([200, 25]);
// Using area() function to
// generate area
var Gen = d3.area()
.x((p) => p.x)
.y0((p) => 0)
.y1((p) => p.y);
d3.select("#gfg")
.append("path")
.attr("d", Gen(data))
.attr("fill", "green")
.attr("stroke", "black");
</script>
</body>
</html>
|
Output:
Example 2:
HTML
<!DOCTYPE html> <html>
<head>
</script>
</head>
<body>
<h1 style="text-align: center;
color: green;">
GeeksforGeeks
</h1>
<center>
<svg id="gfg" width="250" height="200">
</svg>
</center>
<script>
var points = [
{ xpoint: 25, ypoint: 150 },
{ xpoint: 75, ypoint: 50 },
{ xpoint: 100, ypoint: 150 },
{ xpoint: 100, ypoint: 50 },
{ xpoint: 200, ypoint: 150 }];
// Using area() function to generate area
var Gen = d3.area()
.x((p) => p.xpoint)
.y0((p) => 0)
.y1((p) => p.ypoint);
d3.select("#gfg")
.append("path")
.attr("d", Gen(points))
.attr("fill", "green")
.attr("stroke", "black");
</script>
</body>
</html>
|
Output: