d3.js scaleDiverging()用法及代碼示例

D3.js中的d3.scaleDiverging()函數用於構造並返回具有指定域和固定範圍的發散標度。發散的刻度非常類似於連續的刻度。唯一的區別是此標度的輸出範圍由內插器固定，因此該範圍不可配置。

用法:

d3.scaleDiverging( domain, interpolator )

參數：上麵的函數接受上麵提到和下麵描述的兩個參數：

domain:這是最大和最小輸入值範圍。它是一個可選參數。默認域為[0,1]
interpolator:這需要一個內插器函數。它是一個可選參數。默認函數是身份函數。

返回值：此函數不返回任何內容。

下麵給出的是上麵給出的函數的一些例子。

範例1：

HTML

<!DOCTYPE html> 
<html> 
  
<head> 
    <script src="https://d3js.org/d3.v6.min.js"> 
    </script> 
</head> 
  
<body> 
    <h2 style="color:green"> 
        GeeksforGeeks 
    </h2> 
    <h4> d3.scaleDiverging() Function </h4> 
  
    <script> 
        var diverging = 
            d3.scaleDiverging( 
                d3.interpolateSpectral 
            ); 
  
        // Default domain is used i.e [0, 1] 
        document.write(" <p>diverging(0.1):", 
                    diverging(0.1) + "</p>"); 
        document.write("<p>diverging(0.2):", 
                    diverging(0.2) + "</p>"); 
        document.write("<p>diverging(0.3):", 
                    diverging(0.3) + "</p>"); 
        document.write("<p>diverging(0.4):", 
                    diverging(0.4) + "</p>"); 
        document.write("<p>diverging(0.5):", 
                    diverging(0.5) + "</p>"); 
        document.write("<p>diverging(0.6):", 
                    diverging(0.6) + "</p>"); 
    </script> 
</body> 
  
</html>

輸出：

範例2：

HTML

<!DOCTYPE html> 
<html> 
  
<head> 
    <script src="https://d3js.org/d3.v6.min.js"> 
    </script> 
</head> 
  
<body> 
    <h2 style="color:green"> 
        GeeksforGeeks 
    </h2> 
    <h4> d3.scaleDiverging() Function </h4> 
  
    <script> 
        var diverging = d3.scaleDiverging( 
            d3.interpolateRainbow 
        ); 
  
        // Default domain is used i.e [0, 1] 
        document.write("<p>diverging(0.1):", 
                    diverging(0.1) + "</p>"); 
        document.write("<p>diverging(0.2):", 
                    diverging(0.2) + "</p>"); 
        document.write("<p>diverging(0.3):", 
                    diverging(0.3) + "</p>"); 
        document.write("<p>diverging(0.4):", 
                    diverging(0.4) + "</p>"); 
        document.write("<p>diverging(0.5):", 
                    diverging(0.5) + "</p>"); 
        document.write("<p>diverging(0.6):", 
                    diverging(0.6) + "</p>"); 
    </script> 
</body> 
  
</html>

輸出：

相關用法

注：本文由純淨天空篩選整理自tarun007大神的英文原創作品 D3.js scaleDiverging() Function。非經特殊聲明，原始代碼版權歸原作者所有，本譯文未經允許或授權，請勿轉載或複製。