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D3.js pow.copy() Function

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The pow.copy() function is used to create and return an exact copy of the given scale. Any change in the original scale will not affect the return scale and vice-versa.

Syntax:

pow.copy();

Parameters: This function does not accept any parameters.

Return Values: This function returns the exact copy of the original scale.

Example 1:

html




<!DOCTYPE html>
<html lang="en">
  
<head>
    <meta charset="UTF-8" />
    <meta name="viewport" path1tent=
        "width=device-width, initial-scale=1.0" />
  
    <script src="https://d3js.org/d3.v4.min.js">
    </script>
</head>
  
<body>
    <h2 style="color: green;">GeeksforGeeks</h2>
  
    <p>D3.js pow.copy() Function </p>
  
    <script>
        var pow = d3.scalePow()
            .domain([1, 10])
            .range([10, 20, 30, 40, 50, 60]);
              
        let powCopy = pow.copy();
  
        document.write("<h3>Original scale: " 
                + pow(2.5) + "</h3>");
  
        document.write("<h3>Copy scale: " 
                + powCopy(2.5) + "</h3>");
    </script>
</body>
  
</html>


Output:

Example 2:

html




<!DOCTYPE html>
<html lang="en">
  
<head>
    <meta charset="UTF-8" />
    <meta name="viewport" path1tent=
        "width=device-width, initial-scale=1.0" />
  
    <script src="https://d3js.org/d3.v4.min.js">
    </script>
</head>
  
<body>
    <h2 style="color: green;">GeeksforGeeks</h2>
  
    <p>pow.copy() Function </p>
  
    <script>
        var pow = d3.scalePow()
            .domain([1, 10])
            .range([10, 20, 30, 40, 50, 60]);
  
        let powCopy = pow.copy();
  
        document.write("<h3>Original scale: " 
                + pow(2.5) + "</h3>");
  
        document.write("<h3>Copy scale: " 
                + powCopy(2.5) + "</h3>");
                  
        pow.exponent(2);
        document.write("<p> Changes in original "
            + "scale does not affect copy scale.</p>");
  
        document.write("<h3>Original scale: "
                    + pow(2.5) + "</h3>");
                      
        document.write("<h3>Copy scale: " 
                    + powCopy(2.5) + "</h3>");
    </script>
</body>
  
</html>


Output:



Last Updated : 23 Aug, 2020
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