The d3.schemeRdBu[] function in d3.js is used to return a color in Hex code. This scheme is a part of the diverging color scheme in D3.js. This gives the color in red and blue hex code color range.
Syntax:
d3.schemeRdBu[k];
Parameters: This function accepts a single parameter as mentioned above and described below:
- t: It is any number or the index of the hex code.
Return Values: It returns a Hex color code of the color.
Below examples illustrate the D3.js schemeRdBu[] function in JavaScript:
Example1:
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 schemeRdBu[] Function</title>     </head>     <style></style>     <body>         <!--Fetching from CDN of D3.js -->        <script src=         </script>         <script src=         </script>         <script src=         </script>         <script src=         </script>         <script>             console.log(d3.schemeRdBu[3][0]);             console.log(d3.schemeRdBu[3][1]);             console.log(d3.schemeRdBu[11][0]);             console.log(d3.schemeRdBu[11][1]);             console.log(d3.schemeRdBu[11][2]);             console.log(d3.schemeRdBu[11][3]);         </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"/>         <title>D3.js schemeRdBu[] Function</title>     </head>     <style>         div {             padding: 5px;             text-align: center;             vertical-align: middle;             display: flex;             justify-content: center;             width: fit-content;             height: 50px;             float: left;         }     </style>     <body>         <h2>D3.schemeRdBu()</h2>         <div class="box1">             <span>                 (0.1)             </span>         </div>         <div class="box2">             <span>                 (0.2)             </span>         </div>         <div class="box3">             <span>                 (0.3)             </span>         </div>         <div class="box4">             <span>                 (0.4)             </span>         </div>         <div class="box5">             <span>                 (0.5)             </span>         </div>         <div class="b6">             <span>                 (0.6)             </span>         </div>         <div class="b7">             <span>                 (0.7)             </span>         </div>         <div class="b8">             <span>                 (0.8)             </span>         </div>         <div class="b9">             <span>                 (0.9)             </span>         </div>         <div class="b10">             <span style="color: honeydew;">                 (1.0)             </span>         </div>         <!--Fetching from CDN of D3.js -->        <script src=         </script>         <script src=         </script>         <script src=         </script>         <script src=         </script>         <script>             // Creating different colors for             // different values in a array             let color1 = d3.schemeRdBu[3][0];             let color2 = d3.schemeRdBu[3][1];             let color3 = d3.schemeRdBu[3][2];             let color4 = d3.schemeRdBu[4][3];             let color5 = d3.schemeRdBu[10][5];             let color6 = d3.schemeRdBu[8][5];             let color7 = d3.schemeRdBu[10][2];             let color8 = d3.schemeRdBu[11][5];             let color9 = d3.schemeRdBu[11][1];             let color10 = d3.schemeRdBu[11][0];               // Selecting Div using query selector             let box1 = document.querySelector(".box1");             let box2 = document.querySelector(".box2");             let box3 = document.querySelector(".box3");             let box4 = document.querySelector(".box4");             let box5 = document.querySelector(".box5");             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");               // Setting style and BG color of the particular DIVs             box1.style.backgroundColor = color1;             box2.style.backgroundColor = color2;             box3.style.backgroundColor = color3;             box4.style.backgroundColor = color4;             box5.style.backgroundColor = color5;             b6.style.backgroundColor = color6;             b7.style.backgroundColor = color7;             b8.style.backgroundColor = color8;             b9.style.backgroundColor = color9;             b10.style.backgroundColor = color10;         </script>     </body> </html> |
Output:
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