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: