d3.js point.domain()用法及代碼示例

point.domain()函數用於將磅秤的範圍設置為指定的值數組。數組中的第一個元素映射到範圍中的第一個點，域中的第二個值映射到第二個點，依此類推。

用法:

point.domain([domain]);

參數：此函數接受上麵給定和下麵描述的單個參數：

domain:此參數設置點刻度的域，即最小值和最大值。

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：

<!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.v4.min.js"> 
    </script> 
      
</head>  
<style> 
</style> 
<body>  
    <script>  
    // Creating the point scale with  
   // specified domain and range. 
        var point = d3.scalePoint() 
                    .domain([1, 2, 3, 4]); 
        
        console.log("point(1):", point(1)); 
        console.log("point(2):", point(2)); 
        console.log("point(3):", point(3)); 
        console.log("point(4):", point(4)); 
    </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.v4.min.js"> 
    </script> 
      
</head>  
<style> 
</style> 
<body>  
    <script>  
// Creating the point scale with specified domain and range. 
        var point = d3.scalePoint() 
                    .domain([1, 2, 3, 4]) 
                    .range([10, 50]); 
        
        console.log("point(1):", point(1)); 
        console.log("point(2):", point(2)); 
        console.log("point(3):", point(3)); 
        console.log("point(4):", point(4)); 
    </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 point.domain() 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。