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D3.js interpolateInferno() Function
  • Last Updated : 19 Aug, 2020

The d3.interpolateInferno() function in D3.js is used to return a particular color from the “inferno” sequential color scheme which is returned as an RGB string.

Syntax:

d3.interpolateInferno(t)

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

  • t: “t” is a number in the range [0, 1].

Return Value: It returns an RGB string.

Example 1:



HTML

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<!DOCTYPE html>
<html lang="en">
  
<head>
    <meta charset="UTF-8" />
    <meta name="viewport" path1tent=
        "width=device-width,initial-scale=1.0" />
  
    <title>D3.js interpolateInferno() Function</title>
    <script src="https://d3js.org/d3.v4.min.js">
    </script>
    <script src="https://d3js.org/d3-color.v1.min.js">
    </script>
    <script src=
    </script>
    <script src=
    </script>
</head>
  
<body>
    <center>
        <h1 style="color:green;">GeeksForGeeks</h1>
  
        <h3>D3.js interpolateInferno() Function</h3>
  
        <script>
            document.write(d3.interpolateInferno(0) + "<br>");
            document.write(d3.interpolateInferno(0.1) + "<br>");
            document.write(d3.interpolateInferno(0.2) + "<br>");
            document.write(d3.interpolateInferno(0.3) + "<br>");
            document.write(d3.interpolateInferno(0.4) + "<br>");
            document.write(d3.interpolateInferno(0.5) + "<br>");
            document.write(d3.interpolateInferno(0.6) + "<br>");
            document.write(d3.interpolateInferno(0.7) + "<br>");
            document.write(d3.interpolateInferno(0.8) + "<br>");
            document.write(d3.interpolateInferno(0.9) + "<br>");
            document.write(d3.interpolateInferno(1));
        </script>
    </center>
</body>
  
</html>

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Output:

Example 2:

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brightness_4
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<!DOCTYPE html>
<html lang="en">
  
<head>
    <meta charset="UTF-8" />
    <meta name="viewport" path1tent=
        "width=device-width,initial-scale=1.0" />
  
    <title>
        D3.js interpolateInferno() Function
    </title>
    <script src=
    </script>
    <script src=
    </script>
    <script src=
    </script>
    <script src=
    </script>
</head>
<style>
    div {
        padding: 3px;
        width: fit-content;
        height: 20px;
        width: 200px;
    }
</style>
  
<body>
    <center>
        <h1 style="color:green;">GeeksForGeeks</h1>
  
        <h3>D3.js interpolateInferno() Function</h3>
  
        <div class="b1">
            <span>
                D3.interpolateInferno(0)
            </span>
        </div>
        <div class="b2">
            <span>
                D3.interpolateInferno(0.1)
            </span>
        </div>
        <div class="b3">
            <span>
                D3.interpolateInferno(0.2)
            </span>
        </div>
        <div class="b4">
            <span>
                D3.interpolateInferno(0.3)
            </span>
        </div>
        <div class="b5">
            <span>
                D3.interpolateInferno(0.4)
            </span>
        </div>
        <div class="b6">
            <span>
                D3.interpolateInferno(0.5)
            </span>
        </div>
        <div class="b7">
            <span>
                D3.interpolateInferno(0.6)
            </span>
        </div>
        <div class="b8">
            <span>
                D3.interpolateInferno(0.7)
            </span>
        </div>
        <div class="b9">
            <span>
                D3.interpolateInferno(0.8)
            </span>
        </div>
        <div class="b10">
            <span>
                D3.interpolateInferno(0.9)
            </span>
        </div>
        <div class="b11">
            <span>
                D3.interpolateInferno(1)
            </span>
        </div>
        <script>
            // Array of colors is given 
            let color1 = d3.interpolateInferno(0.0);
            let color2 = d3.interpolateInferno(0.1);
            let color3 = d3.interpolateInferno(0.2);
            let color4 = d3.interpolateInferno(0.3);
            let color5 = d3.interpolateInferno(0.4);
            let color6 = d3.interpolateInferno(0.5);
            let color7 = d3.interpolateInferno(0.6);
            let color8 = d3.interpolateInferno(0.7);
            let color9 = d3.interpolateInferno(0.8);
            let color10 = d3.interpolateInferno(0.9);
            let color11 = d3.interpolateInferno(1.0);
  
            let b1 = document.querySelector(".b1");
            let b2 = document.querySelector(".b2");
            let b3 = document.querySelector(".b3");
            let b4 = document.querySelector(".b4");
            let b5 = document.querySelector(".b5");
            let b6 = document.querySelector(".b6");
            let b7 = document.querySelector(".b7");
            let b8 = document.querySelector(".b8");
            let b9 = document.querySelector(".b9");
            let b10 = document.querySelector(".b10");
            let b11 = document.querySelector(".b11");
  
            b1.style.backgroundColor = color1;
            b2.style.backgroundColor = color2;
            b3.style.backgroundColor = color3;
            b4.style.backgroundColor = color4;
            b5.style.backgroundColor = color5;
            b6.style.backgroundColor = color6;
            b7.style.backgroundColor = color7;
            b8.style.backgroundColor = color8;
            b9.style.backgroundColor = color9;
            b10.style.backgroundColor = color10;
            b11.style.backgroundColor = color11;
        </script>
    </center>
</body>
  
</html>

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Output:

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