The density.size() function is used to set the size of the density estimator function. The size is given in the form of range as shown in the below-given examples. If the size is not specified it returns the current default size i.e [960, 500].
Syntax:
d3.contourDensity.x().y().size([size]);
Parameters: This function takes one parameter as given above and described below.
- size: It is an array that takes two values i.e width and height.
Return Value: This function does not return anything.
Below given are a few examples of the density.size() function.
Example 1:
HTML
<!DOCTYPE html> <html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="
width=device-width, initial-scale=1.0">
<script type="text/javascript"
</script>
</script>
</head>
<body>
<h1 style="color:green">GeeksforGeeks</h1>
<script>
// svg object is appended to the body.
var svg = d3.select("body")
.append("svg")
.attr("width", 530)
.attr("height", 480)
.append("g")
.attr("transform",
"translate(" + 40 + ", " + -80 + ")");
// read data
d3.csv("./data.csv", function(data)
{
var y = d3.scaleLinear()
.domain([2, 30])
.range([ 300, 100 ]);
var x = d3.scaleLinear()
.domain([2, 22])
.range([ 0, 200]);
svg.append("g")
.call(d3.axisLeft(y));
svg.append("g")
.attr("transform", "translate(0, " + 300 + ")")
.call(d3.axisBottom(x));
var density= d3.contourDensity()
.y(function(d) { return y(d.y); })
.bandwidth(15)
// Use of size() Function
.size([50, 350])
.x(function(d) { return x(d.x); })(data)
svg.selectAll("path")
.data(density)
.enter()
.append("path")
.attr("d", d3.geoPath())
.attr("fill", "none")
.attr("stroke", "green")
});
// Data for csv file
// x, y, group
// 9.45, 14.14, H
// 9.1, 14.14, H
// 9.9, 9.9, H
// 9.6, 14.5, H
// 9.1, 9.7, H
// 14.7, 9.5, H
// 7.9, 9.6, H
// 14.7, 9.7, H
// 9.45, 14.14, H
// 12.1, 9.14, H
// 7.5, 9, H
// 14.5, 14.5, H
// 9.45, 9.7, H
// 14.45, 9.6, H
// 9.5, 7.6, H
// 9, 9.45, H
// 14.7, 12, H
// 9.7, 9.7, H
// 9.6, 9, H
// 12, 9, H
// 9.45, 14.5, H
// 9.9, 14.6, H
// 12.7, 9.9, H
// 9, 12.14, H
// 9, 14.9, H
// 9.5, 9.7, H
// 9.7, 14.7, H
// 9.9, 14.5, H
// 14, 14.5, H
// 7.9, 9, H
// 9.9, 9.45, H
// 9, 14.14, H
// 14.7, 9.7, H
// 14.5, 9.9, H
</script>
</body>
</html>
|
Output:
Example 2:
HTML
<!DOCTYPE html> <html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="
width=device-width, initial-scale=1.0">
<script type="text/javascript"
</script>
</script>
</head>
<body>
<h1 style="color:green">GeeksforGeeks</h1>
<script>
// append the svg object to the body.
var svg = d3.select("body")
.append("svg")
.attr("width", 530)
.attr("height", 480)
.append("g")
.attr("transform",
"translate(" + 40 + ", " + -80 + ")");
// read data
d3.csv("./data.csv", function(data) {
var y = d3.scaleLinear()
.domain([2, 30])
.range([ 300, 100 ]);
var x = d3.scaleLinear()
.domain([2, 22])
.range([ 0, 200]);
svg.append("g")
.call(d3.axisLeft(y));
svg.append("g")
.attr("transform", "translate(0, " + 300 + ")")
.call(d3.axisBottom(x));
var density= d3.contourDensity()
.y(function(d) { return y(d.y); })
.x(function(d) { return x(d.x); })
// Use of size() Function
.size([100, 200])
(data)
svg.selectAll("path")
.data(density)
.enter()
.append("path")
.attr("d", d3.geoPath())
.attr("fill", "none")
.attr("stroke", "green")
});
// Data for csv file
// x, y, group
// 9.45, 14.14, H
// 9.1, 14.14, H
// 9.9, 9.9, H
// 9.6, 14.5, H
// 9.1, 9.7, H
// 14.7, 9.5, H
// 7.9, 9.6, H
// 14.7, 9.7, H
// 9.45, 14.14, H
// 12.1, 9.14, H
// 7.5, 9, H
// 14.5, 14.5, H
// 9.45, 9.7, H
// 14.45, 9.6, H
// 9.5, 7.6, H
// 9, 9.45, H
// 14.7, 12, H
// 9.7, 9.7, H
// 9.6, 9, H
// 12, 9, H
// 9.45, 14.5, H
// 9.9, 14.6, H
// 12.7, 9.9, H
// 9, 12.14, H
// 9, 14.9, H
// 9.5, 9.7, H
// 9.7, 14.7, H
// 9.9, 14.5, H
// 14, 14.5, H
// 7.9, 9, H
// 9.9, 9.45, H
// 9, 14.14, H
// 14.7, 9.7, H
// 14.5, 9.9, H
</script>
</body>
</html>
|
Output: