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D3.js band.rangeRound() Function

  • Last Updated : 24 Aug, 2020

The band.rangeRound() function is used to set the range of the scale to the specified two-element array along with this it also set the round to true.

Syntax:

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band.rangeRound([range]) 

Parameters: This function accepts single parameters as given above and described below:

  • range: This parameter accepts a two-element array of numbers.

Return Values: This function does not return anything.



Below given are a few examples of the function given above.

Example 1:




<!DOCTYPE html> 
<html lang = "en"
<head
    <meta charset = "UTF-8" /> 
    <meta name = "viewport"
        path1tent = "width=device-width, 
        initial-scale = 1.0"/> 
    <script src =
    </script>
      
</head
<body
    <script
    // Creating the band scale with
    // specified domain and range.
        var band = d3.scaleBand()
                    .domain([10, 20, 30, 40, 50])
                    .range([0, 1]);
  
        console.log("Without rangeRound function:");
        console.log("band(10): ", band(10));
        console.log("band(20): ", band(20));
        
        console.log("With rangeRound function:");
        
        var band = d3.scaleBand()
                    .domain([10, 20, 30, 40, 50])
                    .rangeRound([0, 1]);
        
        console.log("band(10): ", band(10));
        console.log("band(20): ", band(20));
    </script
</body
</html>

Output:

Example 2:




<!DOCTYPE html> 
<html lang = "en"
<head
    <meta charset = "UTF-8" /> 
    <meta name = "viewport"
        path1tent = "width=device-width, 
        initial-scale = 1.0"/> 
    <script src =
    </script>
      
</head
<body
    <script
    // Creating the band scale with
     // specified domain and range.
        var band = d3.scaleBand()
                    .domain([1, 2, 3, 4])
        // When range is in string
                    .range(["0", "10"]);
        console.log("Without rangeRound function:");
        console.log("band(1): ", band(1));
        console.log("band(2): ", band(2));
        
        console.log("With rangeRound function:");
        
        var band = d3.scaleBand()
                    .domain([1, 2, 3, 4, 5])
                    .rangeRound(["0", "10"]);
        
        console.log("band(1): ", band(1));
        console.log("band(2): ", band(2));
    </script
</body
</html>

Output:




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