D3.js | d3.cross() function

The d3.cross() function in D3.js is used to return the cartesian product of the given two arrays A and B.

Syntax:

d3.cross(Array1, Array2)

Parameters: This function accepts two parameters which are mentioned above and described below:



  • Array1: This is the first array whose elements are going to be performed cartesian product with array2.
  • Array2: This is the second array whose elements are going to be performed cartesian product with array1.

Return Value: It returns the cartesian product array of two-element each of two given array.

Below programs illustrate the d3.cross() function in D3.js.
Example 1:

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<html>
  
<head>
    <title>
      Getting cartesian product
      of the two given array
  </title>
</head>
  
<body>
    <script src='https://d3js.org/d3.v4.min.js'>
  </script>
  
    <script>
        // initialising the array of elements
        var Array1 = [10, 20, 30];
        var Array2 = [1, 2, 3];
  
        // Calling to d3.cross() function
        A = d3.cross(Array1, Array2);
  
        // Getting cartesian product of the two given array
        document.write(A + "<br>");
    </script>
</body>
  
</html>

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Output:

[[10, 1], [10, 2], [10, 3], [20, 1], [20, 2], [20, 3], [30, 1], [30, 2], [30, 3]]

Example 2:

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<html>
  
<head>
    <title>
      Getting cartesian product 
      of the two given array
  </title>
</head>
  
<body>
    <script src='https://d3js.org/d3.v4.min.js'>
  </script>
  
    <script>
        // initialising the array of elements
        var Array1 = ["A", "B", "C"];
        var Array2 = ["a", "b", "c"];
  
        // Calling to d3.cross() function
        A = d3.cross(Array1, Array2);
  
        // Getting cartesian product of the two given array
        document.write(A + "<br>");
    </script>
</body>
  
</html>

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Output:

[[A, a], [A, b], [A, c], [B, a], [B, b], [B, c], [C, a], [C, b], [C, c]]

Ref: https://devdocs.io/d3~4/d3-array#cross



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