The zip() function in D3.js is used to form a matrix from an array given as a parameter. It helps to visualize data. D3.js stands for Data-Driven Documents.
Syntax:
d3.zip(arrays…)
Parameters: This function accepts a single parameter as mentioned above and described below:
- arrays: This parameter holds the series of arrays.
Return Value: It returns the array of arrays.
Below examples illustrate the zip() function in D3.js:
Example 1:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport"
content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body>
<!--fetching from CDN of D3.js-->
<script type = "text/javascript"
src = "https://d3js.org/d3.v4.min.js">
</script>
<script>
console.log("Making matrix using zip function: ")
let m=d3.zip(["aa","ab","ac"],
["ac","ad","ah"],["ae","af","ag"]);
console.log("Matrix returned by zip function is: ",m)
</script>
</body>
</html>
Output:
Example 2: When nothing is given in the parameter an empty array is returned by the zip function.
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport"
content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body>
<!--fetching from CDN of D3.js -->
<script type = "text/javascript"
src = "https://d3js.org/d3.v4.min.js">
</script>
<script>
let m=d3.zip();
console.log("Type of m is: ",typeof(m))
console.log("Matrix returned by zip function is: ",m)
</script>
</body>
</html>
Output:
