D3.js chord.padAngle()函数

D3.js中的chord.padAngle()函数用于将相邻组之间的 pad 角度设置为指定的弧度数，并返回和弦布局。

句法：

chord.padAngle([angle]);

参数：此函数接受如上所述和如下所述的单个参数

• angle：此参数是设置相邻组之间焊盘角度的角度。

返回值：此函数返回和弦布局。

下面的程序说明了D3.js中的chord.padAngle()函数

示例 1：

HTML

  

    D3.js | chord.padAngle() Function
    
    

  

    
        GeeksForGeeks
  
        D3.js | chord.padAngle() Function
        
  
        
            // Create the svg area
            var svg = d3.select("#GFG")
                .append("svg")
                .attr("width", 340)
                .attr("height", 340)
                .append("g")
                .attr("transform", "translate(170, 170)")
  
            // Create input data
            var data = [[10, 161, 80, 80],
            [13, 990, 9, 69],
            [175, 71, 16, 68],
            [51, 148, 60, 71]];
  
            // Give this matrix to d3.chord()
            var chords = d3.chord()
              
                // Use of chord.padAngle() Function
                .padAngle(0.5)
                (data)
  
            svg.datum(chords)
                .append("g")
                .selectAll("g")
                .data(function (d) { return d.groups; })
                .enter()
                .append("g")
                .append("path")
                .style("fill", "black")
                .style("stroke", "black")
                .attr("d", d3.arc()
                    .innerRadius(150)
                    .outerRadius(160)
                )
  
            svg.datum(chords)
                .append("g")
                .selectAll("path")
                .data(function (d) { return d; })
                .enter()
                .append("path")
                .attr("d", d3.ribbon()
                    .radius(150)
                )
                .style("fill", "#58b54a")
                .style("stroke", "black");
        
    

  

输出：

示例 2：

HTML

  

    D3.js | chord.padAngle() Function
    
  
    
    
    
    
    
    
    

  

    
        GeeksForGeeks
  
        D3.js | chord.padAngle() Function
        
  
        
            // Create the svg area
            var svg = d3.select("#GFG")
                .append("svg")
                .attr("width", 340)
                .attr("height", 340)
                .append("g")
                .attr("transform", "translate(170, 170)")
  
            // Create input data
            var data = [[0, 71, 89, 68],
            [11, 0, 60, 71],
            [10, 145, 0, 85],
            [13, 9, 9, 0]];
  
            // 4 groups, so create a vector of 4 colors
            var colors = [d3.schemeDark2[4], d3.schemeDark2[5],
            d3.schemeDark2[6], d3.schemeDark2[7]];
  
            // Give this matrix to d3.chord()
            var chords = d3.chord()
  
                // Use of chord.padAngle() Function
                .padAngle(0.3)
                .sortSubgroups(d3.ascending)
                (data)
  
            svg.datum(chords)
                .append("g")
                .selectAll("g")
                .data(function (d) { return d.groups; })
                .enter()
                .append("g")
                .append("path")
                .style("fill", function (d, i) {
                    return colors[i]
                })
                .style("stroke", "black")
                .attr("d", d3.arc()
                    .innerRadius(150)
                    .outerRadius(160)
                )
  
            svg.datum(chords)
                .append("g")
                .selectAll("path")
                .data(function (d) { return d; })
                .enter()
                .append("path")
                .attr("d", d3.ribbon()
                    .radius(150)
                )
                .style("fill", function (d) {
                    return (colors[d.source.index])
                })
                .style("stroke", "black");
        
    

  

输出：