D3.js chord.sortGroups()函数

D3.js中的chord.sortGroups()函数用于将组比较器设置为指定函数或 null 并返回此和弦布局。

句法：

chord.sortGroups( [compare] )

参数：此函数接受如上所述和如下所述的单个参数

• compare：此参数是设置组比较器的函数。

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.sortGroups()函数：

示例 1：

HTML

  

    
    

  

    
        GeeksForGeeks
  
        D3.js | chord.sortGroups() Function
        
  
        
            // Create the svg area
            var svg = d3.select("#GFG")
                .append("svg")
                .attr("width", 320)
                .attr("height", 320)
                .append("g")
                .attr("transform", "translate(160,160)")
  
            // Create input data
            var data = [[10, 161, 80, 80, 12, 34, 53],
            [13, 990, 9, 69, 76, 35, 4],
            [175, 71, 16, 68, 0, 0, 3],
            [51, 148, 60, 71, 34, 5, 1],
            [13, 990, 9, 69, 76, 35, 4],
            [175, 71, 16, 68, 0, 0, 3],
            [51, 148, 60, 71, 34, 5, 1]];
  
            // Give this matrix to d3.chord()
            var chords = d3.chord()
                .padAngle(0.1)
  
                // Use of chord.sortGroups() Function
                .sortGroups(d3.ascending)
                (data)
  
            svg.datum(chords)
                .append("g")
                .selectAll("g")
                .data(function (d) { return d.groups; })
                .enter()
                .append("g")
                .append("path")
                .style("fill", "green")
                .style("stroke", "black")
                .attr("d", d3.arc()
                    .innerRadius(100)
                    .outerRadius(150)
                )
  
            svg.datum(chords)
                .append("g")
                .selectAll("path")
                .data(function (d) { return d; })
                .enter()
                .append("path")
                .attr("d", d3.ribbon()
                    .radius(100)
                )
                .style("fill", "red")
                .style("stroke", "black");
        
    

  

输出：

示例 2：

HTML

  

    
    
    
    
    
    
    
    

  

    
        GeeksForGeeks
  
        D3.js | chord.sortGroups() 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, 71, 89, 68],
            [11, 0, 60, 71, 9, 9, 0],
            [10, 145, 0, 85, 145, 0, 85],
            [13, 9, 9, 0, 0, 60, 71],
            [13, 9, 9, 0, 0, 60, 71],
            [10, 145, 0, 85, 145, 0, 85],
            [0, 71, 89, 68, 71, 89, 68]];
  
            // 4 groups, so create a vector
            // of 4 colors
            var colors = [d3.schemeSet1[0], 
                d3.schemeCategory10[1],
                d3.schemeCategory10[2], 
                d3.schemeCategory10[3],
                d3.schemeCategory10[4], 
                d3.schemeCategory10[5],
                d3.schemeCategory10[6]];
  
            var colors_1 = [d3.schemeSet1[0], 
                d3.schemeSet1[1],
                d3.schemeSet1[2], 
                d3.schemeSet1[3],
                d3.schemeSet1[4], 
                d3.schemeSet1[5],
                d3.schemeSet1[6]];
  
            // Give this matrix to d3.chord()
            var chords = d3.chord()
                .padAngle(0.07)
  
                // Use of chord.sortGroups() Function
                .sortGroups(d3.descending)
                (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, i) {
                    return colors_1[i]
                })
                .style("stroke", "black");
        
    

  

输出：