D3.js | d3.continuous.invert() Function

0 0 1 minute read

The d3.continuous.invert() function in D3.js is used to return the corresponding value from the domain if a value from the range is given.

Syntax:

.invert( Value )

Parameters: This function accepts single parameter Value which holds the value of range.

Return Value: This function returns the corresponding value from the domain if a value from the range is given.

Below programs illustrate the d3.continuous.invert() function in D3.js:

Example 1:

<!DOCTYPE html> 
<html> 
  
<head> 
    <title> 
        D3.js | d3.continuous.invert() Function 
    </title> 
      
    <script src =  
        "https://d3js.org/d3.v4.min.js"> 
    </script> 
</head> 
  
<body> 
    <script> 
          
        // Calling scaleLinear() function 
        var x = d3.scaleLinear().domain([10, 150]) 
                    .range([0, 1000]); 
  
        // Calling the .invert() function 
        // and getting the corresponding value 
        // from domain if value from range is given 
        console.log(x.invert(150));  
        console.log(x.invert(999)); 
    </script> 
</body> 
  
</html> 

Output:

31
149.86

Example 2:

<!DOCTYPE html> 
<html> 
  
<head> 
    <title> 
        D3.js | d3.continuous.invert() Function 
    </title> 
      
    <script src =  
        "https://d3js.org/d3.v4.min.js"> 
    </script> 
</head> 
  
<body> 
    <script> 
          
        // Calling scaleLinear() function 
        var x = d3.scaleLinear().domain([0, 1]) 
                .range([10, 20]); 
  
        // Calling the .invert() function 
        // and getting the corresponding value 
        // from domain if value from range is given 
        console.log(x.invert(11));  
        console.log(x.invert(13)); 
        console.log(x.invert(15));  
        console.log(x.invert(19)); 
          
    </script> 
</body> 
</html>     

Output:

0.1
0.3
0.5
0.9

Reference: https://devdocs.io/d3~5/d3-scale#continuous_invert

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