d3.js diverging.copy()用法及代码示例

不同的尺度与连续尺度非常相似。唯一的区别是此标度的输出范围由内插器固定，因此该范围不可配置。

d3.js中的diverging.copy()函数用于构造并返回原始比例的精确副本。原始比例的任何更改都不会影响复印比例，反之亦然。

用法:

diverging.copy();

参数：此函数不带任何参数。

返回值：此函数返回原始比例的副本。

下面给出的是上面给出的函数的一些例子。

范例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>

输出：

范例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>

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 diverging.copy() 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。