d3.js pie.endAngle()用法及代码示例

D3.js中的pie.endAngle()函数用于设置饼图的结束角度。指定角度后，它将端角设置为给定的角度或函数，并返回饼图生成器。如果未指定角度，它将返回当前的端角访问器，默认为无端角。

用法:

pie.endAngle( angle )

参数：该函数接受如上所述和以下描述的单个参数。

angle:它是一个数字或函数，以弧度指定结束角度。它是一个可选参数。

返回值：此函数不返回任何内容。

下面给出了D3.js中pie.endAngle()函数的一些示例；

范例1：

HTML

<!DOCTYPE html> 
<html> 
  
<head> 
    <script src="https://d3js.org/d3.v6.min.js"> 
    </script> 
</head> 
  
<body> 
    <div style="width:300px; height:300px;"> 
        <center> 
            <h1 style="color:green"> 
                GeeksforGeeks 
            </h1> 
            <h2> 
                pie.endAngle() 
            </h2> 
        </center> 
        <svg width="300" height="250"> 
        </svg> 
    </div> 
      
    <script> 
        // Data to be added in the pie chart 
        var data = [ 
            { "property":"p5", "value":19 }, 
            { "property":"p5", "value":12 }, 
            { "property":"p4", "value":11 }, 
            { "property":"p3", "value":10 }, 
            { "property":"p2", "value":9 }, 
        ] 
  
        // Selecting SVG using d3.select() 
        var svg = d3.select("svg"); 
  
        // Creating Pie generator 
        var pie = d3.pie() 
            .value((d) => { return d.value }) 
            .startAngle(3) 
            // Use of pie.endAngle() Functioon 
            .endAngle(1) 
            (data); 
        // Creating arc 
        var arc = d3.arc() 
            .innerRadius(0) 
            .outerRadius(80); 
  
        let g = svg.append("g") 
            .attr("transform", "translate(150,120)"); 
  
        // Grouping different arcs 
        var arcs = g.selectAll("arc") 
            .data(pie) 
            .enter() 
            .append("g"); 
  
        // Appending path  
        arcs.append("path") 
            .attr("fill", (data, i) => { 
                return d3.schemeSet3[i]; 
            }) 
            .attr("d", arc); 
    </script> 
</body> 
  
</html>

输出：

范例2：

HTML

<!DOCTYPE html> 
<html> 
  
<head> 
    <script src="https://d3js.org/d3.v6.min.js"> 
    </script> 
</head> 
  
<body> 
    <div style="width:300px; height:300px;"> 
        <center> 
            <h1 style="color:green"> 
                GeeksforGeeks 
            </h1> 
            <h2> 
                pie.endAngle() 
            </h2> 
        </center> 
        <svg width="300" height="250"> 
        </svg> 
    </div> 
    <script> 
        // Data to be added in the pie chart 
        var data = [ 
            { "property":"p5", "value":19 }, 
            { "property":"p5", "value":12 }, 
            { "property":"p4", "value":11 }, 
            { "property":"p3", "value":10 }, 
            { "property":"p2", "value":9 }, 
            { "property":"p5", "value":19 }, 
            { "property":"p5", "value":12 }, 
            { "property":"p4", "value":11 }, 
            { "property":"p3", "value":10 }, 
            { "property":"p2", "value":9 }, 
        ] 
  
        // Selecting SVG using d3.select() 
        var svg = d3.select("svg"); 
  
        // Creating Pie generator 
        var pie = d3.pie() 
            .value((d) => { return d.value }) 
            // Use of pie.endAngle() Functioon 
            .endAngle(4) 
            (data); 
        // Creating arc 
        var arc = d3.arc() 
            .innerRadius(10) 
            .outerRadius(80); 
  
        let g = svg.append("g") 
            .attr("transform", "translate(150,120)"); 
  
        // Grouping different arcs 
        var arcs = g.selectAll("arc") 
            .data(pie) 
            .enter() 
            .append("g"); 
  
        // Appending path  
        arcs.append("path") 
            .attr("fill", (data, i) => { 
                return d3.schemeSet3[i]; 
            }) 
            .attr("d", arc); 
    </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 pie.endAngle() 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。