d3.js interpolateYlGnBu()用法及代码示例

d3.js中的d3.interpolateYlGnBu()函数用于返回与顺序配色方案相对应的RGB颜色字符串。

用法:

d3.interpolateYlGnBu(t);

参数：above-given函数仅采用上面给出并在下面描述的一个参数：

t:整数形式，取值范围是[0，1]。

返回值：该函数返回一个字符串。

以下示例说明了D3.js中的d3.interpolateYlGnBu()函数：

范例1：

HTML

<!DOCTYPE html> 
<html lang="en"> 
  
<head> 
    <meta charset="UTF-8"> 
    <meta name="viewport" content="width=device-width,  
                initial-scale=1.0"> 
  
    <!--Fetching from CDN of D3.js -->
    <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> 
    <script> 
        console.log(d3.interpolateYlGnBu(0.4)); 
        console.log(d3.interpolateYlGnBu(0.3)); 
        console.log(d3.interpolateYlGnBu(0.2)); 
        console.log(d3.interpolateYlGnBu(0.5)); 
        console.log(d3.interpolateYlGnBu(0.4)); 
        console.log(d3.interpolateYlGnBu(0.9)); 
        console.log(d3.interpolateYlGnBu(0.2)); 
        console.log(d3.interpolateYlGnBu(0)); 
    </script> 
</body> 
  
</html>

输出：

范例2：

HTML

<!DOCTYPE html> 
<html lang="en"> 
  
<head> 
    <meta charset="UTF-8"> 
    <meta name="viewport" content="width=device-width,  
                initial-scale=1.0"> 
  
    <!--Fetching from CDN of D3.js -->
    <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> 
  
    <style> 
        div { 
            padding:6px; 
            text-align:center; 
            vertical-align:middle; 
            display:flex; 
            justify-content:center; 
            width:100px; 
            height:100px; 
            float:left; 
        } 
    </style> 
</head> 
  
<body> 
    <h2>D3.interpolateYlGnBu() </h2> 
    <div class="pixel1"> 
        <span>t = 0.4</span> 
    </div> 
    <div class="pixel2"> 
        <span>t = 0.6</span> 
    </div> 
      
    <script> 
  
        // creating different colors for different 
        // Values of t is 0.4 
        let color1 = 
            d3.interpolateYlGnBu(0.4); 
        // Values of t is 0.6 
        let color2 = 
            d3.interpolateYlGnBu(0.6); 
  
        // Selecting Div using query selector 
        let pixel1 = document.querySelector(".pixel1"); 
        let pixel2 = document.querySelector(".pixel2"); 
  
        // Setting style and BG color of 
        // the particular DIVs 
        pixel1.style.backgroundColor = color1; 
        pixel2.style.backgroundColor = color2; 
    </script> 
</body> 
  
</html>

输出：

相关用法

注：本文由纯净天空筛选整理自tarun007大神的英文原创作品 D3.js interpolateYlGnBu() 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。