D3.js continuous.rangeRound() Function

Last Updated : 23 Aug, 2020

The continuous.rangeRound() function is used set the range of the scale to the specified array of values. It also sets the interpolator to interpolatorRound. The rounding interpolator may be useful for avoiding antialiasing artifacts.

Syntax:

continuous.rangeRound( [range] )

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

[range]: It is an array that contains the range for the domain specified.

Return Values: This function does not return anything.

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

Example 1:

HTML

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8" />
    <meta name="viewport" content=
        "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;">Geeksforgeeks</h2>

    <p>continuous.rangeRound() Function </p>

    <script>
        var continuous = d3.scaleLinear()
            // Domain ranges -10, 0, 10
            .domain([-10, 0, 10])
            // Range for the domain
            .rangeRound([10, 20, 30, 40, 
                    50, 60, 70, 80, 90]);

        document.write("<br/><div>");
        document.write("<p> With rangeRound()");
        document.write("<h3>" + continuous(10) + "</h3>");
        document.write("<h3>" + continuous(2) + "</h3>");
        document.write("<h3>" + continuous(11.5) + "</h3>");
        document.write("<h3>" + continuous(-1) + "</h3>");
        document.write("<h3>" + continuous(1.15) + "</h3>");
        document.write("<h3>" + continuous(5) + "</h3></div>");

        var continuous = d3.scaleLinear()

            // Domain ranges -10, 0, 10
            .domain([-10, 0, 10])
            // Range for the domain
            .range([10, 20, 30, 40, 50, 60, 70, 80, 90])

        document.write("<br/><div>");
        document.write("<p> Without rangeRound()");
        document.write("<h3>" + continuous(10) + "</h3>");
        document.write("<h3>" + continuous(2) + "</h3>");
        document.write("<h3>" + continuous(11.5) + "</h3>");
        document.write("<h3>" + continuous(-1) + "</h3>");
        document.write("<h3>" + continuous(1.15) + "</h3>");
        document.write("<h3>" + continuous(5) + "</h3></div>");
    </script>
</body>

</html>

Output:

Example 2:

HTML

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="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>
        div {
            line-height: 15px;
            float: left;
            padding: 10px;
            word-wrap: break-word;
            margin-left: 10px;
            height: 200px;
            width: 300px;
        }
    </style>
</head>

<body>
    <h2 style="color:green;">Geeks for geeks</h2>

    <p>continuous.rangeRound() Function </p>

    <script>
        var continuous = d3.scaleLinear()
            // Domain ranges -10, 0, 10
            .domain([-10, 0, 10])
            // Range for the domain
            .range([10, 20, 30, 40, 50, 60, 70, 80, 90])
            .interpolate(d3.interpolateRound);

        document.write("<br/><div>");
        document.write(
            "<p> With range().interpolate(d3.interpolate.Round)");
        document.write("<h3>" + continuous(10) + "</h3>");
        document.write("<h3>" + continuous(2) + "</h3>");
        document.write("<h3>" + continuous(11.5) + "</h3>");
        document.write("<h3>" + continuous(-1) + "</h3>");
        document.write("<h3>" + continuous(1.15) + "</h3>");
        document.write("<h3>" + continuous(5) + "</h3></div>");

        var continuous = d3.scaleLinear()
            // Domain ranges -10, 0, 10
            .domain([-10, 0, 10])
            // Range for the domain
            .rangeRound([10, 20, 30, 40, 50, 60, 70, 80, 90])

        document.write("<br/><div>");
        document.write("<p> With rangeRound()");
        document.write("<h3>" + continuous(10) + "</h3>");
        document.write("<h3>" + continuous(2) + "</h3>");
        document.write("<h3>" + continuous(11.5) + "</h3>");
        document.write("<h3>" + continuous(-1) + "</h3>");
        document.write("<h3>" + continuous(1.15) + "</h3>");
        document.write("<h3>" + continuous(5) + "</h3></div>");
    </script>
</body>

</html>

Output:

tarun007

Improve

Article Tags :

D3.js continuous.rangeRound() Function

Explore

JavaScript Basics

JS Variables & Datatypes

JS Operators

JS Statements

JS Loops

JS Perfomance & Debugging

JS Object

JS Function

JS Array

Thank You!

What kind of Experience do you want to share?