D3.js interpolateYlOrRd()函数

d3.js 中的d3.interpolateYlOrRd()函数用于从“YlOrRd”的发散配色方案中返回一个 RGB 颜色字符串。

句法：

d3.interpolateYlOrRd(t);

参数：此函数接受如上所述和如下所述的单个参数：

• t：数值，范围为[0,1]。

返回值：此函数返回一个 RGB 颜色字符串。

下面的示例说明了 JavaScript 中的 D3.js interpolateYlOrRd()函数：

示例 1：

HTML

    
        
        
        D3.js interpolateYlOrRd() Function
    
    
    
        
        
        
        
        
        
        
        
        
        
            console.log(d3.interpolateYlOrRd(0.14));
            console.log(d3.interpolateYlOrRd(0.4));
            console.log(d3.interpolateYlOrRd(0.2));
            console.log(d3.interpolateYlOrRd(0.25));
            console.log(d3.interpolateYlOrRd(0.54));
            console.log(d3.interpolateYlOrRd(0.85));
            console.log(d3.interpolateYlOrRd(2));
            console.log(d3.interpolateYlOrRd(1));
        
    

输出：

示例 2：

HTML

    
        
        
        Document
    
    
        div {
            padding: 6px;
            text-align: center;
            vertical-align: middle;
            display: flex;
            justify-content: center;
            width: 90px;
            height: 50px;
            float: left;
        }
    
    
        D3.interpolateYlOrRd()
        
             
        
        
             
        
        
             
        
        
             
        
        
             
        
        
        
        
        
        
        
        
        
        
        
            // Creating different colors for different
            // Values of t is 0.1
            let color1 = d3.interpolateYlOrRd(0.1);
            // Values of t is 0.3
            let color2 = d3.interpolateYlOrRd(0.3);
            // Values of t is 0.5
            let color3 = d3.interpolateYlOrRd(0.5);
            // Values of t is 0.8
            let color4 = d3.interpolateYlOrRd(0.8);
            // Values of t is 1.0
            let color5 = d3.interpolateYlOrRd(1.0);
  
            // 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");
  
            // 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;
        
    

输出：