d3.js diverging.copy()用法及代碼示例

不同的尺度與連續尺度非常相似。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。

d3.js中的diverging.copy()函數用於構造並返回原始比例的精確副本。原始比例的任何更改都不會影響複印比例，反之亦然。

用法:

diverging.copy();

參數：此函數不帶任何參數。

返回值：此函數返回原始比例的副本。

下麵給出的是上麵給出的函數的一些例子。

範例1：

<!DOCTYPE html>  
<html lang="en">  
<head>  
    <meta charset="UTF-8" />  
    <meta name="viewport"
        path1tent="width=device-width,  
        initial-scale=1.0"/>  
    <title>GeekforGeeks</title> 
    <script src =  
"https://d3js.org/d3.v6.min.js"> 
</script> 
</head>  
<style> 
</style> 
<body>  
    <h2 style="color:green"> GeeksforGeeks </h2> 
    <h4> D3.js | diverging.copy() Function </h4> 
    <script>  
        var diverging =  
d3.scaleDiverging(d3.interpolateSpectral); 
        // Default domain is used i.e [0, 1] 
        document.write( 
        "<b>From original scale:</b>"); 
        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("<b>From copy scale:</b>"); 
        var divergingCopy = diverging.copy(); 
        document.write( 
"<p>divergingCopy(0.1):", divergingCopy(0.1) + "</p>"); 
        document.write( 
"<p>divergingCopy(0.2):", divergingCopy(0.2) + "</p>"); 
        document.write( 
"<p>divergingCopy(0.3):", divergingCopy(0.3) + "</p>"); 
    </script>  
</body>  
</html>

輸出：

範例2：

<!DOCTYPE html>  
<html lang="en">  
<head>  
    <meta charset="UTF-8" />  
    <meta name="viewport"
        path1tent="width=device-width,  
        initial-scale=1.0"/>  
    <title>GeekforGeeks</title> 
    <script src= 
"https://d3js.org/d3.v6.min.js"></script> 
</head>  
<style> 
</style> 
<body>  
    <h2 style="color:green"> GeeksforGeeks </h2> 
    <h4> D3.js | diverging.copy() Function </h4> 
    <script>  
        var diverging =  
d3.scaleDiverging(d3.interpolateSpectral); 
        // Default domain is used i.e [0, 1] 
        document.write( 
        "<b>From original scale:</b>"); 
        document.write( 
"<p>diverging(0.1):", diverging(0.1) + "</p>"); 
        document.write( 
"<p>diverging(0.2):", diverging(0.2) + "</p>"); 
        document.write( 
"<b>Change in copy scale does not"+ 
" effect original scale:</b>"); 
        var divergingCopy = diverging.copy(); 
        // Domain is changed to [10, 100] 
        divergingCopy.domain([10, 100]) 
        document.write( 
"<p>divergingCopy(0.1):", divergingCopy(0.1) + "</p>"); 
        document.write( 
"<p>divergingCopy(0.2):", divergingCopy(0.2) + "</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 diverging.copy() 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。