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D3.js continuous.copy() Function

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  • Last Updated : 26 Aug, 2020
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The continuous.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:

continuous.copy();

Parameters: This function does not accept any parameters.

Return Value: This function returns a copy of original scale.

Below examples illustrate the continuous.copy() function in D3.js:

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>
    <script src=
    </script>
    <script src=
    </script>
    <script src=
    </script>
</head>
  
<body>
    <h2 style="color:green;">Geeks for geeks</h2>
  
    <p>continuous.copy() Function </p>
  
    <script>
        var x = d3.scaleLinear()
            .domain([0, 1])
            .range([1, 2, 3, 4, 5, 6])
  
        var copy = x.copy();
        document.write("</br>");
        document.write("<p> This is from original: ");
        document.write("<h3>" + x(0.5144) + "</h3>");
        document.write("<p> This is a copy of original: ");
        document.write("<h3>" + copy(0.5144) + "</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" />
    <title>Geeks for geeks</title>
    <script src="https://d3js.org/d3.v4.min.js">
    </script>
    </script>
    <script src=
    </script>
    <script src=
    </script>
</head>
  
<body>
    <h2>Geeks for geeks</h2>
  
    <p>continuous.copy() Function </p>
  
    <script>
        var x = d3.scaleLinear()
            .domain([0, 1])
            .range([1, 2, 3, 4, 5, 6])
  
        var copy = x.copy()
            .interpolate(d3.interpolateRound);
              
        document.write("</br>");
        document.write("This is from original: ");
        document.write("<h3>" + x(0.5144) + "</h3>");
        document.write("This is a copy of original: ");
        document.write("<h3>" + copy(0.5144) + "</h3>");
    </script>
</body>
  
</html>

Output:


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