Question

我正在尝试构建从1条线到多条线的图表。我已经分别构建了两个图表，但是在合并它们时遇到了麻烦。我的想法是，我想显示每年出售的所有水果的总数，然后显示每年出售的每种水果的数量。

这是我正在使用的模板：http://bl.ocks.org/d3noob/a048edddbf83bff03a34

在我的代码中，单行显示正常。当我单击更新时，轴将按应有的方式进行更新，但数据不会更新。任何帮助将不胜感激。

我的代码在插销中，https://plnkr.co/edit/dgwsGLIRbZ2qm7faEvSw?p=preview

代码也在下面。

    <!DOCTYPE html>
    <meta charset="utf-8">
    <style>
    body { font: 12px Arial;}
    path {
        stroke: #333;
        stroke-width: 2;
        fill: none;
    }
    .axis path,
    .axis line {
        fill: none;
        stroke: grey;
        stroke-width: 1;
        shape-rendering: crispEdges;
    }
    </style>
    <body>
    <div id="option">
      <input name="updateButton" id="updateData" type="button" value="Update" />
        <input name="revertButton" type="button" value="Revert" onclick="revertData()" />
    </div>

    <script src="https://d3js.org/d3.v4.min.js"></script>
    <script src="//code.jquery.com/jquery-1.10.2.js"></script>

    <script>

    var margin = {top: 30, right: 20, bottom: 30, left: 50},
        width = 800 - margin.left - margin.right,
        height = 470 - margin.top - margin.bottom;

    var x = d3.scaleLinear().range([0, width]);
    var y = d3.scaleLinear().range([height, 0]);

    var xAxis = d3.axisBottom().scale(x)
        .ticks(7)
        .tickFormat(d3.format("d"))

    var yAxis = d3.axisLeft().scale(y)
        .ticks(5);

    var valueline = d3.line()
        .x(function(d) { return x(d.Year); })
        .y(function(d) { return y(d.Count); });

    var svg = d3.select("body")
        .append("svg")
            .attr("width", width + margin.left + margin.right)
            .attr("height", height + margin.top + margin.bottom)
        .append("g")
            .attr("transform",
                  "translate(" + margin.left + "," + margin.top + ")");

    d3.csv("datab.csv", function(error, data2) {
      d3.csv("dataa.csv", function(error, data) {
        data.forEach(function(d) {
            d.Year = +d.Year;
            d.Count = +d.Count;
        });

        x.domain(d3.extent(data, function(d) { return d.Year; }));
        y.domain([0, d3.max(data, function(d) { return d.Count; })]);

        dataNest1 = d3.nest()
                .key(function(d) {return d.Type;})
                .entries(data);

        var result1 = dataNest1.filter(function(val,idx, arr){
              return $("." + val.key)
            })

      var calls = d3.select("svg").selectAll(".line")
        .data(result1, function(d){return d.key})

        var color1 = d3.scaleOrdinal().range(["#333",  "none", "none", "none", "none", "none"]);

      calls.enter().append("path")
          .attr("class", "line")
        .attr("stroke","#333")
        .attr("d", function(d){
          return valueline(d.values)
        })
        .attr("transform",
              "translate(" + margin.left + "," + margin.top + ")");

          svg.append("g")
              .attr("class", "x axis")
              .attr("transform", "translate(0," + height + ")")
              .call(xAxis);

          svg.append("g")
              .attr("class", "y axis")
              .call(yAxis);

            d3.select('#updateData').on('click',function(){
              updateData(data2)
            })
     });
    });

    function updateData(data2) {

            data2.forEach(function(d) {
                d.Year = +d.Year;
                d.Count = +d.Count;
            });

          dataNest = d3.nest()
                  .key(function(d) {return d.Descriptor;})
                  .entries(data2);

            var result = dataNest.filter(function(val,idx, arr){
                      return $("." + val.key)
                    })

            x.domain(d3.extent(data2, function(d) { return d.Year; }));
            y.domain([0, d3.max(data2, function(d) { return d.Count; })]);

        var svg = d3.select("body").transition();
        svg.selectAll('.circle').duration(0).remove()

        d3.select("svg").selectAll(".line")
        .data(result, function(d){return d.key})

        d3.select("svg").selectAll("path.line")
            .transition()
            .duration(700)
          .style("stroke", "#333")
                .attr("d", function(d){
                    return valueline(d.values)
                });

            // svg.select(".line")   // change the line
            //     .duration(750)
            //     .attr("d", valueline(rats));

            svg.select(".x.axis")
                .transition()
                .duration(750)
                .call(xAxis);
            svg.select(".y.axis")
                .duration(750)
                .call(yAxis);

    }

    function revertData() {

        // Get the data again
        d3.csv("totalsbyyear.csv", function(error, data) {
            data.forEach(function(d) {
                d.Year = +d.Year;
                d.Count = +d.Count;
            });

            // Scale the range of the data again
            x.domain(d3.extent(data, function(d) { return d.Year; }));
            y.domain([0, d3.max(data, function(d) { return d.Count; })]);

        // Select the section we want to apply our changes to
        var svg = d3.select("body").transition();

        // Make the changes
            svg.select(".line")   // change the line
                .duration(750)
                .attr("d", valueline(data));
            svg.select(".x.axis") // change the x axis
                .duration(750)
                .call(xAxis);
            svg.select(".y.axis") // change the y axis
                .duration(750)
                .call(yAxis);

        });
    }

    </script>
    </body>

Answer 1

这里有一些问题。第一个是您的数据集非常不同，我看不到代码中的任何地方来补偿同一年中存在多个不同的结果。您需要通过修改csv文件或在updateData函数中仅提取单个水果来解决此问题。

我已经对您的插入器进行了一些更改，这些更改将使updateFunction可以正常工作，但是如果不修复输入数据，那将不会有什么大碍。

https://plnkr.co/edit/DSg09NWPrBADLLbcL5cx?p=preview

需要修复的主要问题是

d3.select("svg").selectAll("path.line")
  .data(result, function(d){return d.key})
  .transition()
  .duration(700)
  .style("stroke", "#337")
     .attr("d", function(d){
     return valueline(result)
   });

然后将d3.csv放在updateData函数的datab.csv调用中，而不是将其包装在主表创建函数周围。

Answer 2

我可能不清楚自己问的问题。我想出了要使其按预期工作所需要做的事情。代码在这里：

https://plnkr.co/edit/YrABkbc8l9oeT1ywMspy?p=preview

    <!DOCTYPE html>
    <meta charset="utf-8">
    <style>
    body { font: 12px Arial;}
    path {
        stroke: #333;
        stroke-width: 2;
        fill: none;
    }
    .axis path,
    .axis line {
        fill: none;
        stroke: grey;
        stroke-width: 1;
        shape-rendering: crispEdges;
    }
    </style>
    <body>

    <div id="option">
      <input name="updateButton" id="updateData" type="button" value="Update" />
        <input name="revertButton" type="button" value="Revert" onclick="revertData()" />
    </div>

    <script src="https://d3js.org/d3.v4.min.js"></script>
    <script src="//code.jquery.com/jquery-1.10.2.js"></script>

    <script>

    var margin = {top: 30, right: 200, bottom: 30, left: 50},
        width = 850 - margin.left - margin.right,
        height = 470 - margin.top - margin.bottom;

    var x = d3.scaleLinear().range([0, width]);
    var y = d3.scaleLinear().range([height, 0]);

    var xAxis = d3.axisBottom().scale(x)
        .ticks(7)
        .tickFormat(d3.format("d"))

    var yAxis = d3.axisLeft().scale(y)
        .ticks(5);

    var valueline = d3.line()
        .x(function(d) { return x(d.Year); })
        .y(function(d) { return y(d.Count); });

    var svg = d3.select("body")
        .append("svg")
            .attr("width", width + margin.left + margin.right)
            .attr("height", height + margin.top + margin.bottom)
        .append("g")
            .attr("transform",
                  "translate(" + margin.left + "," + margin.top + ")");

    d3.csv("datab.csv", function(error, data2) {
      d3.csv("dataa.csv", function(error, data) {
        data.forEach(function(d) {
            d.Year = +d.Year;
            d.Count = +d.Count;
        });

        x.domain(d3.extent(data, function(d) { return d.Year; }));
        y.domain([0, d3.max(data, function(d) { return d.Count; })]);

        svg.append("path")
            .attr("class", "line")
            .attr("d", valueline(data));

        svg.append("text")
            .attr("transform", function(d) { return "translate(" + x(2017) + "," + y(35074) + ")"; })
            .attr("x", 3)
            .attr("dy", "0.35em")
            .attr('class','toplinetext')
            .style("font", "10px sans-serif")
            .text(function(d) { return "All"; });

        circles = svg.selectAll("circle")
              .data(data)
              .enter()
              .append("circle")
              .attr('class','circle')
              .attr('cx',function(d){ return x(d.Year)})
              .attr('cy',function(d){ return y(d.Count)})
              .attr('r',3)

          svg.append("g")
              .attr("class", "x axis")
              .attr("transform", "translate(0," + height + ")")
              .call(xAxis);

          svg.append("g")
              .attr("class", "y axis")
              .call(yAxis);

          svg.exit().remove();

            d3.select('#updateData').on('click',function(){
              updateData(data2)
            })
     });
    });

    function updateData(data2) {

          data2.forEach(function(d) {
                d.Year = +d.Year;
                d.Count = +d.Count;
            });

          var notapples = data2.filter(function(d){return d.Descriptor == "Peach" || d.Descriptor == "Pear" || d.Descriptor == "Plum" || d.Descriptor == "Banana"})

          dataNest = d3.nest()
                  .key(function(d) {return d.Descriptor;})
                  .entries(notapples);

            var result = dataNest.filter(function(val,idx, arr){
                      return $("." + val.key)
                    })

         $('.toplinetext').text('Apples');


            x.domain(d3.extent(data2, function(d) { return d.Year; }));
            y.domain([0, d3.max(data2, function(d) { return d.Count; })]);

        var svg = d3.select("body").transition();
        svg.selectAll('.circle').duration(0).remove()

        var typeOfCall = d3.select("svg").selectAll(".dline")
          .data(result, function(d){return d.key})
          .enter().append("g")
          .attr("class", function(d){return "type " + d.key})
          .attr("transform",
                "translate(" + margin.left + "," + margin.top + ")");

          var color2 = d3.scaleOrdinal().range(["#ff0000",  "#333", "#333", "#333", "#333", "#333"]);

        typeOfCall.append("path")
          .attr("height", 0)
            .transition()
            .duration(700)
            .attr("class", "line")
          .style("stroke", function(d,i) { return color2(d.key); })
                .attr("d", function(d){
                    return valueline(d.values)
                });

          typeOfCall.append("text")
             .datum(function(d) { return {id: d.Descriptor, value: d.values[d.values.length - 1]}; })
              .attr("transform", function(d) { return "translate(" + x(d.value.Year) + "," + y(d.value.Count) + ")"; })
              .attr("x", 3)
              .attr("dy", "0.35em")
              .style("font", "10px sans-serif")
              .text(function(d) { return d.value.Descriptor; });

            typeOfCall.exit().remove();

            apples = data2.filter(function(d){return d.Descriptor == "Apple"})

            svg.select(".line")
                .duration(750)
                .attr("d", valueline(apples));

            svg.select(".x.axis")
                .transition()
                .duration(750)
                .call(xAxis);
            svg.select(".y.axis")
                .duration(750)
                .call(yAxis);
    }

    function revertData() {

        // Get the data again
        d3.csv("totalsbyyear.csv", function(error, data) {
            data.forEach(function(d) {
                d.Year = +d.Year;
                d.Count = +d.Count;
            });

          $('.toplinetext').text('All');
          $('.Peach,.Pear,.Banana,.Plum').remove();
            // Scale the range of the data again
            x.domain(d3.extent(data, function(d) { return d.Year; }));
            y.domain([0, d3.max(data, function(d) { return d.Count; })]);

        // Select the section we want to apply our changes to
        var svg = d3.select("body").transition();

        // Make the changes
            svg.select(".line")   // change the line
                .duration(750)
                .attr("d", valueline(data));
            svg.select(".x.axis") // change the x axis
                .duration(750)
                .call(xAxis);
            svg.select(".y.axis") // change the y axis
                .duration(750)
                .call(yAxis);

        });
    }

    </script>
    </body>

在d3中从单个折线图到多折线图的两个数据集之间的过渡

2 个答案: