D3.js schemeRdGy[]函数

d3.schemeRdGy[]函数用于返回一个 HEX 颜色代码字符串，该字符串对应于 d3.js 中“RdGy”发散配色方案的颜色。

句法：

d3.schemeRdGy[k];

参数：此函数接受如上所述和如下所述的单个参数：

• k：这是一个介于 3 和 10 之间的数字，包括 3 和 10。

返回值：此函数返回一个 HEX 数据格式的颜色字符串。

以下示例说明了 JavaScript 中的 D3.js schemeRdGy[]函数：

示例 1：

HTML

    
    
    
    
    
    
    
    
    
    


    Geeksforgeeks
     
D3.js schemeRdGy[] Function
 
    
        document.write("
<p><b>"
        +d3.schemeRdGy[10][9]+"</p>
</b>");
        document.write("
<p><b>"
        +d3.schemeRdGy[10][5]+"</p>
</b>");
        document.write("
<p><b>"
        +d3.schemeRdGy[10][4]+"</p>
</b>");
        document.write("
<p><b>"
        +d3.schemeRdGy[10][3]+"</p>
</b>");
        document.write("
<p><b>"
        +d3.schemeRdGy[10][2]+"</p>
</b>");
        document.write("
<p><b>"
        +d3.schemeRdGy[10][1]+"</p>
</b>");
        document.write("
<p><b>"
        +d3.schemeRdGy[10][0]+"</p>
</b>");
    

输出：

示例 2：

HTML

    
        
        
    
    
        div {
            padding: 6px;
            color: white;
            text-align: center;
            vertical-align: middle;
            display: flex;
            justify-content: center;
            width: fit-content;
            margin-top: 2px;
            height: 20px;
        }
    
    
        
            Geeksforgeeks
        
         
D3.schemeRdGy[] Function
 
        
            d3.schemeRdGy[10][9]
        
        
            d3.schemeRdGy[10][5]
        
        
            d3.schemeRdGy[10][4]
        
        
            d3.schemeRdGy[10][2]
        
        
            d3.schemeRdGy[10][0]
        
        
        
        
        
        
        
        
        
        
        
            // Creating different colors for
            // different value of k
            let color1 = d3.schemeRdGy[9][5];
            let color2 = d3.schemeRdGy[10][4];
            let color3 = d3.schemeRdGy[9][3];
            let color4 = d3.schemeRdGy[9][2];
            let color5 = d3.schemeRdGy[9][1];
 
            // 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：