D3.js Ribbon()函数

D3.js中的d3.ribbon()函数用于返回具有默认设置的构造的新功能区生成器。

句法：

d3.ribbon();

参数：此函数不接受任何参数。

返回值：该函数返回新建的功能区生成器。

下面的程序说明了D3.js中的d3.ribbon()函数

示例 1：

HTML

 
 
 
  
  
 

   
    GeeksForGeeks
    D3.js | d3.ribbon() Function
    
    
      // Create the svg area
      var svg = d3.select("#GFG")
          .append("svg")
          .attr("width", 300)
          .attr("height", 300)
          .append("g")
          .attr("transform", "translate(150,150)");
  
      // Create input data
      var data = [[ 51, 148, 60, 71, 34, 5, 1],
                  [ 10, 161, 80, 80, 12, 34, 53],
                  [175,  71, 16, 68, 0, 0, 3],
                  [ 13, 990,  9, 69, 76, 35, 4],
                  [ 51, 148, 60, 71, 34, 5, 1]];
  
      // Give this matrix to d3.chord()
      var chords = d3.chord()
          .padAngle(0.2) 
          .sortSubgroups(d3.descending)
          .sortChords(d3.descending)
          (data);
  
      // Use of d3.ribbon() function
      var ribboon = d3.ribbon().radius(140);  
  
      svg.datum(chords)
          .append("g")
          .selectAll("path")
          .data(function (d) { return d; })
          .enter()
          .append("path")
          .attr("d", ribboon)
          .style("fill", "#449db8")
          .style("stroke", "black");
     
  
 

输出：

示例 2：

HTML

 
      
 
  
  
    
  
  
 
 
   
    GeeksForGeeks
    D3.js | d3.ribbon() 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 = [[0,  58, 71, 89, 16, 28, 68],
                  [ 19, 51, 0, 20, 60, 61, 71],
                  [ 80, 10, 16, 145, 0, 80, 45],
                  [ 10, 13,   9, 90,  94, 0, 0],
                  [ 80, 10, 16, 145, 0, 80, 45],
                  [ 10, 13,   9, 90,  94, 0, 0]];
  
      // 4 groups, so create a vector of 4 colors
      var colors = [d3.schemeCategory10[0], 
          d3.schemeCategory10[1],
          d3.schemeCategory10[2], d3.schemeCategory10[3],
          d3.schemeCategory10[4], d3.schemeCategory10[5],
          d3.schemeCategory10[6], d3.schemeCategory10[7]];
  
      // Give this matrix to d3.chord()
      var chords = d3.chord()
          .padAngle(0.175)
          .sortSubgroups(d3.ascending)
          (data);
  
      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：