D3.js pow.interpolate() Function

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The pow.interpolate() function is used to set the range interpolator factory which is used to create the interpolators for each pair of values from the adjacent ranges.

Syntax:

pow.interpolate(interpolate);

Parameters: This function accepts a single parameter as mentioned above and described below.

interpolator: This parameter accepts an interpolator.

Return Value: This function does not return anything.

Below examples illustrate the pow.interpolate() function in D3.js:

Example: Below given is a example of the function given mentioned above.

<!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= 
    "https://d3js.org/d3-color.v1.min.js"> 
    </script> 
    <script src= 
    "https://d3js.org/d3-interpolate.v1.min.js"> 
    </script> 
    <script src= 
    "https://d3js.org/d3-scale-chromatic.v1.min.js"> 
    </script> 
</head> 
  
<body> 
    <h2 style="color:green;"> 
        zambiatek 
    </h2> 
  
    <p>D3.js pow.interpolate() Function</p> 
  
    <script> 
        var pow = d3.scalePow() 
          
            // Domain ranges -10, 0, 10 
            .domain([-10, 0, 10]) 
          
            // Range for the domain 
            .range([10, 20, 30, 40, 50, 60, 70, 80, 90]) 
          
            // Using interpolateRound 
            .interpolate(d3.interpolateRound); 
  
        document.write("<h3>pow(1.0): " + pow(1.0) + "</h3>"); 
        document.write("<h3>pow(2.0): " + pow(2.0) + "</h3>"); 
        document.write("<h3>pow(3.5): " + pow(3.5) + "</h3>"); 
        document.write("<h3>pow(4.1): " + pow(4.1) + "</h3>"); 
        document.write("<h3>pow(1.3): " + pow(1.3) + "</h3>"); 
        document.write("<h3>pow(-1.5): " + pow(-2.5) + "</h3>"); 
    </script> 
</body> 
  
</html> 

Output:

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