D3.js interpolateBrBG() Function

Last Updated : 17 Aug, 2020

The d3.interpolateBrBG() function in D3.js is a diverging color scheme that is available as a continuous interpolator. This function returns the corresponding color from the BrBG diverging color scheme.

Syntax:

d3.interpolateBrBG(t);

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

t: It is a number in a range [0,1]

Return Values: It returns an RGB string.

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

Example1:

HTML

<!DOCTYPE html> 
<html lang="en"> 
    <head> 
        <meta charset="UTF-8" /> 
        <meta
            name="viewport"
            path1tent="width=device-width,  
                       initial-scale=1.0"/> 
        <title>D3.js interpolateBrBG() Function</title> 
    </head> 
    <style></style> 
    <body> 
        <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> 
        <script> 
            console.log(d3.interpolateBrBG(0)); 
            console.log(d3.interpolateBrBG(0.1)); 
            console.log(d3.interpolateBrBG(0.001)); 
            console.log(d3.interpolateBrBG(0.2)); 
            console.log(d3.interpolateBrBG(0.211)); 
            console.log(d3.interpolateBrBG(0.3)); 
            console.log(d3.interpolateBrBG(1)); 
        </script> 
    </body> 
</html> 

Output:

Example2:

HTML

<!DOCTYPE html> 
<html lang="en"> 
    <head> 
        <meta charset="UTF-8" /> 
        <meta
            name="viewport"
            content="width=device-width,  
                     initial-scale=1.0"/> 
        <title>D3.js interpolateBrBG() Function</title> 
    </head> 
    <style> 
        div { 
            padding: 10px; 
            width: fit-content; 
            height: 100px; 
            float: left; 
        } 
    </style> 
    <body> 
        D3.interpolateBrBG() 
        <br /> 
        <br /> 
        <div class="b1"> 
            <span> 
                D3.interpolateBrBG(0.9) 
            </span> 
        </div> 
        <div class="b2"> 
            <span> 
                D3.interpolateBrBG(0.1) 
            </span> 
        </div> 
        <div class="b3"> 
            <span> 
                D3.interpolateBrBG(0.2) 
            </span> 
        </div> 
        <div class="b4"> 
            <span> 
                D3.interpolateBrBG(0.5) 
            </span> 
        </div> 
        <!--Fetching from CDN of D3.js -->
        <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> 
        <script> 
            // Array of colors is given 
            let color1 = d3.interpolateBrBG(0.9); 
  
            let color2 = d3.interpolateBrBG(0.1); 
            let color3 = d3.interpolateBrBG(0.2); 
            let color4 = d3.interpolateBrBG(0.5); 
  
            let b1 = document.querySelector(".b1"); 
            let b2 = document.querySelector(".b2"); 
            let b3 = document.querySelector(".b3"); 
            let b4 = document.querySelector(".b4"); 
            b1.style.backgroundColor = color1; 
            b2.style.backgroundColor = color2; 
            b3.style.backgroundColor = color3; 
            b4.style.backgroundColor = color4; 
        </script> 
    </body> 
</html>