D3.js time.rangeRound() Function

Last Updated : 23 Sep, 2020

The time.rangeRound() function is used to set the range of the scale to the specified array of values along with setting the interpolator to intepolateRound.

Syntax:

time.rangeRound([range]);

Parameters: This function accepts one parameter that is given above and described below.

range: This parameter accepts an array of numbers or strings.

Return Value: This function does not return anything.

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

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="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> 
  
    <style> 
        body { 
            margin-left: 40px; 
        } 
  
        h2 { 
            color: green; 
        } 
  
        div { 
            float: left; 
            width: 280px; 
        } 
    </style> 
</head> 
  
<body> 
    <h2>Geeks for geeks</h2> 
    <p>time.rangeRound() Function </p> 
      
    <script> 
        var time = d3.scaleTime() 
            // Setting domain for the scale. 
            .domain([1, 10]) 
            // Setting the range of the scale. 
            .range([1, 100]); 
  
        document.write( 
            "<div><h3>Without time.rangeRound()</h3>"); 
        document.write( 
            "<h3>time(1.5): " + time(1.5) + "</h3>"); 
        document.write( 
            "<h3>time(2): " + time(2) + "</h3>"); 
        document.write( 
            "<h3>time(3.5): " + time(3.5) + "</h3>"); 
        document.write( 
            "<h3>time(4.5): " + time(4.5) + "</h3></div>"); 
  
        var time = d3.scaleTime() 
            // Setting domain for the scale. 
            .domain([1, 10]) 
            // Setting the range of the scale. 
            .rangeRound([1, 100]); 
        document.write( 
            "<div><h3>With time.rangeRound()</h3>"); 
        document.write( 
            "<div><h3>time(1.5): " + time(1.5) + "</h3>"); 
        document.write( 
            "<h3>time(2): " + time(2) + "</h3>"); 
        document.write( 
            "<h3>time(3.5): " + time(3.5) + "</h3>"); 
        document.write( 
            "<h3>time(4.5): " + time(4.5) + "</h3></div>"); 
    </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> 
    <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> 
  
    <style> 
        body { 
            margin-left: 40px; 
        } 
  
        h2 { 
            color: green; 
        } 
    </style> 
</head> 
  
<body> 
    <h2>Geeks for geeks</h2> 
    <p>time.rangeRound() Function </p> 
    <script> 
  
        var time = d3.scaleTime() 
  
            // Setting domain for the scale. 
            .domain([2001 - 01 - 01, 2000 - 01 - 02]) 
            .rangeRound([1, 10]) 
        document.write("<h3>time(2.4): "  
                + time(2.4) + "</h3>"); 
  
        document.write("<h3>time(2): "  
                + time(2) + "</h3>"); 
  
        document.write("<h3>time(6.4): "  
                + time(6.4) + "</h3>"); 
                  
        document.write("<h3>time(4.5): "  
                + time(4.5) + "</h3>"); 
    </script> 
</body> 
  
</html> 