Question

我的饼图工作正常，但我想添加一个像这样的好传奇（用mspaint制作）

但不能完全发挥作用......

这是我的饼图代码（没有图例部分）：

<!DOCTYPE html>
<html>

<head>
  <script data-require="d3@3.5.3" data-semver="3.5.3" src="//cdnjs.cloudflare.com/ajax/libs/d3/3.5.3/d3.js"></script>
</head>

<body>
  <script>
    var newData = [{
        count: 1,
        emote: "OneTwoThree"
      }, {
        count: 1,
        emote: "FourFiveSix"
      }, {
        count: 1,
        emote: "SevenEightNine"
      }, {
        count: 15,
        emote: "TenElevenTwelve"
      },

    ]

    // Define size & radius of donut pie chart
    var width = 450,
      height = 800,
      radius = Math.min(width, height) / 2;

    // Define arc colours
    var colour = d3.scale.category20();

    // Define arc ranges
    var arcText = d3.scale.ordinal()
      .rangeRoundBands([0, width], .1, .3);

    // Determine size of arcs
    var arc = d3.svg.arc()
      .innerRadius(radius - 130)
      .outerRadius(radius - 10);

    // Create the donut pie chart layout
    var pie = d3.layout.pie()
      .value(function(d) {
        return d.count;
      })
      .sort(null);

    // Append SVG attributes and append g to the SVG
    var mySvg = d3.select('body').append("svg")
      .attr("width", width)
      .attr("height", height);

    var svg = mySvg
      .append("g")
      .attr("transform", "translate(" + radius + "," + radius + ")");

    var svgText = mySvg
      .append("g")
      .attr("transform", "translate(" + radius + "," + radius + ")");

    // Define inner circle
    svg.append("circle")
      .attr("cx", 0)
      .attr("cy", 0)
      .attr("r", 100)
      .attr("fill", "#fff");

    // Calculate SVG paths and fill in the colours
    var g = svg.selectAll(".arc")
      .data(pie(newData))
      .enter().append("g")
      .attr("class", "arc");

    // Append the path to each g
    g.append("path")
      .attr("d", arc)
      //.attr("data-legend", function(d, i){ return parseInt(newData[i].count) + ' ' + newData[i].emote; })
      .attr("fill", function(d, i) {
        return colour(i);
      });

    var textG = svg.selectAll(".labels")
      .data(pie(newData))
      .enter().append("g")
      .attr("class", "labels");

    // Append text labels to each arc
    textG.append("text")
      .attr("transform", function(d) {
        return "translate(" + arc.centroid(d) + ")";
      })
      .attr("dy", ".35em")
      .style("text-anchor", "middle")
      .attr("fill", "#fff")
      .text(function(d, i) {
        return d.data.count > 0 ? d.data.emote : '';
      });
  </script>
</body>

</html>

Answer 1

我很惊讶那里没有更多＆＃34; stock＆＃34;这种事情的例子。

这是一个与您的数据相关的快速图例：

// again rebind for legend
var legendG = mySvg.selectAll(".legend") // note appending it to mySvg and not svg to make positioning easier
  .data(pie(newData))
  .enter().append("g")
  .attr("transform", function(d,i){
    return "translate(" + (width - 110) + "," + (i * 15 + 20) + ")"; // place each legend on the right and bump each one down 15 pixels
  })
  .attr("class", "legend");   

legendG.append("rect") // make a matching color rect
  .attr("width", 10)
  .attr("height", 10)
  .attr("fill", function(d, i) {
    return colour(i);
  });

legendG.append("text") // add the text
  .text(function(d){
    return d.value + "  " + d.data.emote;
  })
  .style("font-size", 12)
  .attr("y", 10)
  .attr("x", 11);

完整示例：

＆＃13;

<!DOCTYPE html>
<html>

<head>
  <script data-require="d3@3.5.3" data-semver="3.5.3" src="//cdnjs.cloudflare.com/ajax/libs/d3/3.5.3/d3.js"></script>
</head>

<body>
  <script>
    var newData = [{
        count: 1,
        emote: "OneTwoThree"
      }, {
        count: 1,
        emote: "FourFiveSix"
      }, {
        count: 1,
        emote: "SevenEightNine"
      }, {
        count: 15,
        emote: "TenElevenTwelve"
      },

    ]

    // Define size & radius of donut pie chart
    var width = 450,
      height = 800,
      radius = Math.min(width, height) / 2.5;

    // Define arc colours
    var colour = d3.scale.category20();

    // Define arc ranges
    var arcText = d3.scale.ordinal()
      .rangeRoundBands([0, width], .1, .3);

    // Determine size of arcs
    var arc = d3.svg.arc()
      .innerRadius(radius - 130)
      .outerRadius(radius - 10);

    // Create the donut pie chart layout
    var pie = d3.layout.pie()
      .value(function(d) {
        return d.count;
      })
      .sort(null);

    // Append SVG attributes and append g to the SVG
    var mySvg = d3.select('body').append("svg")
      .attr("width", width)
      .attr("height", height);

    var svg = mySvg
      .append("g")
      .attr("transform", "translate(" + radius + "," + radius + ")");

    var svgText = mySvg
      .append("g")
      .attr("transform", "translate(" + radius + "," + radius + ")");

    // Define inner circle
    svg.append("circle")
      .attr("cx", 0)
      .attr("cy", 0)
      .attr("r", 100)
      .attr("fill", "#fff");

    // Calculate SVG paths and fill in the colours
    var g = svg.selectAll(".arc")
      .data(pie(newData))
      .enter().append("g")
      .attr("class", "arc");

    // Append the path to each g
    g.append("path")
      .attr("d", arc)
      //.attr("data-legend", function(d, i){ return parseInt(newData[i].count) + ' ' + newData[i].emote; })
      .attr("fill", function(d, i) {
        return colour(i);
      });

    var textG = svg.selectAll(".labels")
      .data(pie(newData))
      .enter().append("g")
      .attr("class", "labels");

    // Append text labels to each arc
    textG.append("text")
      .attr("transform", function(d) {
        return "translate(" + arc.centroid(d) + ")";
      })
      .attr("dy", ".35em")
      .style("text-anchor", "middle")
      .attr("fill", "#fff")
      .text(function(d, i) {
        return d.data.count > 0 ? d.data.emote : '';
      });
    
    var legendG = mySvg.selectAll(".legend")
      .data(pie(newData))
      .enter().append("g")
      .attr("transform", function(d,i){
        return "translate(" + (width - 110) + "," + (i * 15 + 20) + ")";
      })
      .attr("class", "legend");   
    
    legendG.append("rect")
      .attr("width", 10)
      .attr("height", 10)
      .attr("fill", function(d, i) {
        return colour(i);
      });
    
    legendG.append("text")
      .text(function(d){
        return d.value + "  " + d.data.emote;
      })
      .style("font-size", 12)
      .attr("y", 10)
      .attr("x", 11);
    
    
  </script>
</body>

</html>

＆＃13;

Answer 2

为什么不在显示图表的位置旁边创建另一个div，并使用ul / li元素创建图例。您可以轻松匹配颜色并使用名称。然后你可以很容易地使用css进行放置和样式化。

如何在d3饼图中添加一个漂亮的图例

2 个答案: