从d3.js v3升级到v4时,dX和dY值未定义

时间:2018-07-04 00:42:27

标签: d3.js

我一直在尝试将可缩放的树形图从v3移到v4,但是我需要的最后一部分我无法获得dx和dy值来正确绘制矩形。在我的布局函数中,子dx和dy是未定义的,只会导致另一个未定义。因此,当它最终到达直肠时,对我来说毫无用处。

我哪里出错了?

带有建议的blockbuilder链接。

http://blockbuilder.org/jebzaki/b2252c00d51ffaca0c7408b394b168a5

    var margin = {top: 25, right: 0, bottom: 0, left: 0},
    width = 960,
    height = 640 - margin.top - margin.bottom,
    formatNumber = d3.format(",d"),
    transitioning;

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

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

    var color = d3.scaleThreshold()
    .domain([-5,-0,0,5])
    .range(["#BB0000","#600A0A","#404040","#064D15","#1CA41C"]);

    var svg = d3.select("#heatmap").append("svg")
        .attr("width", width + margin.left + margin.right)
        .attr("height", height + margin.bottom + margin.top)
        .style("margin-left", -margin.left + "px")
        .style("margin.right", -margin.right + "px")
      .append("g")
        .attr("transform", "translate(" + margin.left + "," + margin.top + ")")
        .style("shape-rendering", "crispEdges");

    var treemap = d3.treemap()
        .tile(d3.treemapSquarify.ratio(height / width * 0.5 * (1 + Math.sqrt(5))))
    .size([width, height])
    .round(false)
    .paddingInner(1);

    var grandparent = svg.append("g")
        .attr("class", "grandparent");

    grandparent.append("rect")
        .attr("y", -margin.top)
        .attr("width", width)
        .attr("height", margin.top);

    grandparent.append("text")
        .attr("x", 6)
        .attr("y", 6 - margin.top)
        .attr("dy", ".75em");

d3.json("new-data.json", function(error, data) {
  if (error) throw error;

  var root = d3.hierarchy(data)
      .eachBefore(function(d) { d.id = (d.parent ? d.parent.id + "." : "") + d.data.name; })
      .sum((d) => {d.value})
      .sort(function(a, b) { return b.height - a.height || b.value - a.value; });

      initialize(root);
      accumulate(root);
      layout(root);
      treemap(root);
      display(root);

  function initialize(root) {
    root.x = root.y = 0;
    root.dx = width;
    root.dy = height;
    root.depth = 0;
  }

  function accumulate(d) {
    return (d._children = d.children)
        ? d.value = d.children.reduce(function(p, v) { return p + accumulate(v); }, 0)
        : d.value;
  }

    function layout(d) {
      if (d._children) {
        d._children.forEach(function(c) {
          c.x = d.x + c.x * d.dx;
          c.y = d.y + c.y * d.dy;
          c.dx *= d.dx;
          c.dy *= d.dy;
          c.parent = d;
          layout(c);
        });
      }
    }

  function display(d) {
    grandparent
      .datum(d.parent)
        .on("click", transition)
      .select("text")
        .text(name(d));

    grandparent
      .datum(d.parent)
      .select("rect")
      .attr("fill", function(){ return color(d.data.change)})

    var g1 = svg.insert("g", ".grandparent")
      .datum(d)
      .attr("class", "depth");

    var g = g1.selectAll("g")
      .data(d._children)
      .enter().append("g");

    g.filter(function(d) { return d._children; })
      .classed("children", true)
      .on("click", transition);

    g.selectAll(".child")
      .data(function(d) { return d._children || [d]; })
      .enter().append("rect")
      .attr("class", "child")
      .call(rect);

    d3.select("#heatmap").select("#tooltip").remove();
    var div = d3.select("#heatmap").append("div")
      .attr("id", "tooltip")
      .style("opacity", 0);


    g.append("svg:a")
      .attr("xlink:href", function(d) {
          if(!d._children){
              var url = "#";
              return url; 
          }
      })
      .append("rect")
        .attr("class", "parent")
        .call(rect)
        .on("mouseover", function(d) {
               if (d.data.name !== "Results") {
                   d3.select("#tooltip").transition()
                      .duration(200)
                      .style("opacity", 1);
                   d3.select("#tooltip").html("<h3>"+d.data.name+"</h3><table>"+
                            "<tr><td>"+d.data.value+"</td><td> ("+d.data.change+"%)</td></tr>"+
                            "</table>")
                      .style("left", (d3.event.pageX-document.getElementById("heatmap").offsetLeft + 20) + "px")
                      .style("top", (d3.event.pageY-document.getElementById("heatmap").offsetTop - 60) + "px");
               }
        })
        .on("mouseout", function(d) {
          d3.select("#tooltip").transition()
            .duration(500)
            .style("opacity", 0);
        })

    g.append("text")
      .attr("dy", ".75em")
      .text(function(d) { return d.data.name; })
      .call(text);

    function transition(d) {
      if (transitioning || !d) return;
      transitioning = true;

      var g2 = display(d),
        t1 = g1.transition().duration(750),
        t2 = g2.transition().duration(750);

      x.domain([d.x0, d.x0 + d.x1]);
      y.domain([d.y0, d.y0 + d.y1]);

      svg.style("shape-rendering", null);

      svg.selectAll(".depth").sort(function(a, b) { return a.depth - b.depth; });

      g2.selectAll("text").style("fill-opacity", 0);

      t1.selectAll("text").call(text).style("fill-opacity", 0);
      t2.selectAll("text").call(text).style("fill-opacity", 1);
      t1.selectAll("rect").call(rect);
      t2.selectAll("rect").call(rect);

      t1.remove().each("end", function() {
        svg.style("shape-rendering", "crispEdges");
        transitioning = false;
      });
    }

    return g;
  }

  function text(text) {
    text.attr("x", function(d) { return x(d.x0) + (x(d.x0 + d.dx) - x(d.x0))/2; })
      .attr("y", function(d) { return y(d.y0) + (y(d.y0 + d.dy) - y(d.y0))/2; })
      .attr("dy", 0)
      .attr("font-size", function(d) { var w=x(d.x0 + d.dx) - x(d.x0),
                                           h=y(d.y0 + d.dy) - y(d.y0),
                                           t=(d.data.name).length/1.3;
                                       var tf=Math.min(Math.floor(w/t),h/3);
                                       return (tf>=5)?Math.min(tf, 30):0; })
      .attr("fill", "white")
      .attr("text-anchor", "middle");
  }

  function rect(rect) {
    rect.attr("x", function(d) { return x(d.x0); })
      .attr("y", function(d) { return y(d.y0); })
      .attr("width", function(d) { return x(d.x0 + d.dx) - x(d.x0); })
      .attr("height", function(d) { return y(d.y0 + d.dy) - y(d.y0); })
      .attr("fill", function(d){return color(parseFloat(d.data.change));});
  }

  function name(d) {
    return d.parent
      ? "Sector : "+d.data.name+" (Back to Overall Market)"
      : "Overall "+d.data.name;
  }
});

1 个答案:

答案 0 :(得分:1)

我不确定是否要回答您的实际问题,所以我会将其作为评论发表(“移动可缩放树图”使我感到困惑,虽然不确定这是否是错字?) ,但我没有代表这样做。

这是一个小提琴:http://jsfiddle.net/b238u0hy/5/

我注意到您必须一直关注此bl.ock:https://bl.ocks.org/me1er/c64479f1ac8a5f993027f40a36c35dd9

然后我将您的代码与原始代码进行了比较,之所以无法创建矩形,是因为您设置的是'dx','dy'而不是使用由生成的'x1'和'y1'值d3.hierarchy。

此处的dy / dx问题示例:

c.x = d.x + c.x * d.dx;
c.y = d.y + c.y * d.dy;
c.dx *= d.dx;
c.dy *= d.dy;
c.parent = d;
layout(c);

我发现原始代码更具可读性,因此我更改了原始代码以适合您的代码(尽管抱歉,由于我在工作,所以对某些事情很懒惰):

  • 我注释掉了您的颜色功能,因为它不起作用。
  • 我将数据作为变量加载,并注释了d3.json()。
  • 我没有费心从原始代码中删除shortName,text2东西,我只是更改了值名称,以便它可以运行。

编辑:我忘了重新添加工具提示,这里有一个工具提示:http://jsfiddle.net/74t8b9sp/(一些小的更改,我将其更改为'mousemove',所以工具提示跟随您鼠标,将值四舍五入以用于显示目的,并删除了内部矩形和您最初添加的<a>