d3.js lineRadial()用法及代码示例

d3.lineRadial()方法用于使用默认设置构造一个新的径向线生成器。然后使用径向线生成器制作径向线。

用法:

d3.lineRadial();

参数：此方法不接受任何参数。

返回值：此方法返回径向线生成器。

范例1：下面的示例使用此方法制作一条径向曲线。

HTML

<!DOCTYPE html> 
<html> 
  
<head> 
    <script src=" 
https://cdnjs.cloudflare.com/ajax/libs/d3/4.2.2/d3.min.js"> 
    </script> 
  
    <script src=" 
https://d3js.org/d3.v4.min.js"> 
    </script> 
</head> 
  
<body> 
    <h1 style="text-align:center;color:green;"> 
        GeeksforGeeks 
    </h1> 
    <center> 
        <svg id="gfg" width="200" height="200"> 
            <g transform="translate(100, 100)"></g> 
        </svg> 
    </center> 
  
    <script> 
        var lineRadialGenerator = d3.lineRadial(); 
        var data = [ 
            [0, 10], 
            [3.14 * .5, 35], 
            [3.14 * .75, 55], 
            [3.14, 60], 
            [3.14 * 1.25, 65], 
            [3.14 * 1.5, 70], 
            [3.14 * 1.75, 75], 
            [3.14 * 2, 80], 
            [3.14 * 2.25, 85], 
            [3.14 * 2.5, 90], 
            [3.14 * 2.75, 95], 
            [3.14 * 3, 100], 
            [3.14 * 3.25, 105], 
            [3.14 * 3.5, 110]]; 
  
        var a = lineRadialGenerator(data); 
  
        d3.select("#gfg") 
            .select("g") 
            .append("path") 
            .attr("d", a) 
            .attr("fill", "none") 
            .attr("stroke", "green"); 
    </script> 
</body> 
  
</html>

输出：

范例2：

HTML

<!DOCTYPE html> 
<html> 
  
<head> 
    <meta charset="utf-8"> 
  
    <script src=" 
https://cdnjs.cloudflare.com/ajax/libs/d3/4.2.2/d3.min.js"> 
    </script> 
    <script src= 
        "https://d3js.org/d3.v4.min.js"> 
    </script> 
</head> 
  
<body> 
    <h1 style="text-align:center; color:green;"> 
        GeeksforGeeks</h1> 
    <center> 
        <svg id="gfg" width="200" height="200"> 
            <g transform="translate(100, 100)"></g> 
        </svg> 
    </center> 
  
    <script> 
        var lineRadialGenerator = d3.lineRadial(); 
        var data = [ 
            [0, 80], 
            [Math.PI * 0.25, 80], 
            [Math.PI * 0.5, 80], 
            [Math.PI * 0.75, 80], 
            [Math.PI, 80], 
            [Math.PI * 1.25, 80], 
            [Math.PI * 1.5, 80], 
            [Math.PI * 1.75, 80], 
            [Math.PI * 2, 80] 
        ]; 
        var a = lineRadialGenerator(data); 
  
        d3.select("#gfg") 
            .select("g") 
            .append("path") 
            .attr("d", a) 
            .attr("fill", "none") 
            .attr("stroke", "green"); 
    </script> 
</body> 
  
</html>

输出：

相关用法

注：本文由纯净天空筛选整理自taran910大神的英文原创作品 D3.js lineRadial() Method。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。