D3.js interpolateOrRd()函数

D3.js 中的d3.interpolateOrRd()函数用于从“OrRd”顺序配色方案中返回特定颜色，该配色方案作为 RGB字符串返回。

句法：

d3.interpolateOrRd(t)

参数：此函数接受如上所述和如下所述的单个参数：

• t： “t”是 [0,1] 范围内的数字

返回值：它返回一个 RGB字符串。

示例 1：

HTML

 
 
 
     
     
          
    D3.js interpolateOrRd() Function 
     
    
     
    
     
    
     
 
  
 
    
    GeeksForGeeks
      
    D3.js interpolateOrRd() Function
      
     
        document.write(d3.interpolateOrRd(0)+"<br>"); 
        document.write(d3.interpolateOrRd(0.1)+"<br>");
        document.write(d3.interpolateOrRd(0.2)+"<br>");
        document.write(d3.interpolateOrRd(0.3)+"<br>");
        document.write(d3.interpolateOrRd(0.4)+"<br>");
        document.write(d3.interpolateOrRd(0.5)+"<br>");
        document.write(d3.interpolateOrRd(0.6)+"<br>");
        document.write(d3.interpolateOrRd(0.7)+"<br>");
        document.write(d3.interpolateOrRd(0.8)+"<br>");
        document.write(d3.interpolateOrRd(0.9)+"<br>");
        document.write(d3.interpolateOrRd(1));
     
    
 

输出：

示例 2：

HTML

 
 
 
     
     
          
    D3.js interpolateOrRd() Function 
     
    
     
    
     
    
     
   
     
        div { 
            padding: 3px; 
            width: fit-content; 
            height: 20px;
            width: 250px;
        } 
     

  
 
    
    GeeksForGeeks
      
    D3.js interpolateOrRd() Function
      
     
         
            D3.interpolateOrRd(0) 
         
     
     
         
            D3.interpolateOrRd(0.1)  
         
     
     
         
            D3.interpolateOrRd(0.2)
         
     
     
         
            D3.interpolateOrRd(0.3)  
         
     
     
         
            D3.interpolateOrRd(0.4) 
         
     
     
         
            D3.interpolateOrRd(0.5)  
         
     
     
         
            D3.interpolateOrRd(0.6)  
         
     
     
         
            D3.interpolateOrRd(0.7) 
         
     
     
         
            D3.interpolateOrRd(0.8)  
         
     
     
         
            D3.interpolateOrRd(0.9)  
         
     
     
         
            D3.interpolateOrRd(1)  
         
     
     
        // Array of colors is given 
        let color1 = d3.interpolateOrRd(0.0); 
        let color2 = d3.interpolateOrRd(0.1); 
        let color3 = d3.interpolateOrRd(0.2); 
        let color4 = d3.interpolateOrRd(0.3); 
        let color5 = d3.interpolateOrRd(0.4); 
        let color6 = d3.interpolateOrRd(0.5);
        let color7 = d3.interpolateOrRd(0.6); 
        let color8 = d3.interpolateOrRd(0.7); 
        let color9 = d3.interpolateOrRd(0.8); 
        let color10 = d3.interpolateOrRd(0.9); 
        let color11 = d3.interpolateOrRd(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;
     
    
 

输出：