d3.js schemeRdYlBu[]用法及代码示例

D3.js中的d3.schemeRdYlBu []函数用于从“RdYlBu”顺序配色方案中返回特定颜色，该颜色以HEX字符串形式返回。

用法:

d3.schemeRdYlBu[k]

参数：该函数接受如上所述和以下描述的单个参数：

k:“k”是一个数字。

返回值：它返回一个十六进制字符串。

以下示例说明了d3.schemeRdYlBu []D3.js中的函数：

范例1：

HTML

<!DOCTYPE html> 
<html lang="en"> 
  
<head> 
    <meta charset="UTF-8" /> 
    <meta name="viewport" path1tent= 
        "width=device-width,initial-scale=1.0" /> 
  
    <title>D3.js schemeRdYlBu[] Function</title> 
  
    <script src= 
        "https://d3js.org/d3.v4.min.js"> 
    </script> 
    <script src= 
        "https://d3js.org/d3-color.v1.min.js"> 
    </script> 
    <script src= 
        "https://d3js.org/d3-interpolate.v1.min.js"> 
    </script> 
    <script src= 
        "https://d3js.org/d3-scale-chromatic.v1.min.js"> 
    </script> 
</head> 
  
<body> 
    <center> 
        <h1 style="color:green;">GeeksForGeeks</h1> 
  
        <h3>D3.js schemeRdYlBu[] Function</h3> 
  
        <script> 
            document.write(d3.schemeRdYlBu[3][0] + "<br>"); 
            document.write(d3.schemeRdYlBu[3][1] + "<br>"); 
            document.write(d3.schemeRdYlBu[3][2] + "<br>"); 
            document.write(d3.schemeRdYlBu[4][1] + "<br>"); 
            document.write(d3.schemeRdYlBu[4][2] + "<br>"); 
            document.write(d3.schemeRdYlBu[4][3]); 
        </script> 
    </center> 
</body> 
  
</html>

输出：

范例2：

HTML

<!DOCTYPE html> 
<html lang="en"> 
  
<head> 
    <meta charset="UTF-8" /> 
    <meta name="viewport" path1tent= 
        "width=device-width,initial-scale=1.0" /> 
  
    <title>D3.js schemeRdYlBu[] Function</title> 
    <script src= 
        "https://d3js.org/d3.v4.min.js"> 
    </script> 
    <script src= 
        "https://d3js.org/d3-color.v1.min.js"> 
    </script> 
    <script src= 
"https://d3js.org/d3-interpolate.v1.min.js"> 
    </script> 
    <script src= 
"https://d3js.org/d3-scale-chromatic.v1.min.js"> 
    </script> 
</head> 
<style> 
    div { 
        padding:10px; 
        width:fit-content; 
        height:100px; 
    } 
</style> 
  
<body> 
    <center> 
        <h1 style="color:green;"> 
            GeeksForGeeks 
        </h1> 
  
        <h3>D3.js schemeRdYlBu[] Function</h3> 
  
        <div class="b1"> 
            <span> 
                D3.schemeRdYlBu[9][0] 
            </span> 
        </div> 
          
        <div class="b2"> 
            <span> 
                D3.schemeRdYlBu[3][1] 
            </span> 
        </div> 
  
        <script> 
            // Array of colors is given  
            let color1 = d3.schemeRdYlBu[9][0]; 
  
            let color2 = d3.schemeRdYlBu[3][1]; 
  
            let b1 = document.querySelector(".b1"); 
            let b2 = document.querySelector(".b2"); 
            b1.style.backgroundColor = color1; 
            b2.style.backgroundColor = color2;  
        </script> 
    </center> 
</body> 
  
</html>

输出：

相关用法

注：本文由纯净天空筛选整理自SHUBHAMSINGH10大神的英文原创作品 D3.js schemeRdYlBu[] Function。非经特殊声明，原始代码版权归原作者所有，本译文未经允许或授权，请勿转载或复制。