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Javascript 带D3.Js的SVG高度

javascript html d3.js

Javascript 带D3.Js的SVG高度,javascript,html,d3.js,Javascript,Html,D3.js,我遇到了一个小问题，实际上有很多树是水平排列的，问题是当这三棵树的高度不同时，它们的水平排列不正确。请帮助我找到解决方案，谢谢！： 代码： <!DOCTYPE html> <meta charset="utf-8"> <style> .node rect { cursor: pointer; fill: #fff; fill-opacity: 0.5; stroke: #3182bd; stroke-width: 1.5px; } .n

我遇到了一个小问题，实际上有很多树是水平排列的，问题是当这三棵树的高度不同时，它们的水平排列不正确。请帮助我找到解决方案，谢谢！：

代码：

<!DOCTYPE html>
<meta charset="utf-8">
<style>

.node rect {
  cursor: pointer;
  fill: #fff;
  fill-opacity: 0.5;
  stroke: #3182bd;
  stroke-width: 1.5px;
}

.node text {
  font: 10px sans-serif;
  pointer-events: none;
}

.link {
  fill: none;
  stroke: #9ecae1;
  stroke-width: 1.5px;
}

</style>
<body>
<script src="https://d3js.org/d3.v4.min.js"></script>
<script>

var margin = {top: 30, right: 20, bottom: 30, left: 20},
    width = 400,
    barHeight = 20,
    barWidth = (width - margin.left - margin.right) * 0.8;

var i = 0,
    duration = 0,
    root,
    root2;

var diagonal = d3.linkHorizontal()
    .x(function(d) { return d.y; })
    .y(function(d) { return d.x; });


var div = d3.select("body").append("div")
    .attr("id", "div")
    .attr("width", 1920);

var svg = div.append("svg")
    .attr("id", "svg")
    .attr("width", 600) // + margin.left + margin.right)
    .append("g")
    .attr("transform", "translate(30,30)");

var svg2 = div.append("svg")
    .attr("id", "svg2")
    .attr("width", 600) // + margin.left + margin.right)
    .append("g")
    .attr("transform", "translate(30,30)");

var svg3 = div.append("svg")
    .attr("id", "svg3")
    .attr("width", 600) // + margin.left + margin.right)
    .append("g")
    .attr("transform", "translate(30 30)");

d3.json("c.json", function(error, json) {
  if (error) throw error;
  root = d3.hierarchy(json);
  root.x0 = 0;
  root.y0 = 0;
  update(root, svg, "svg");
});

d3.json("D.json", function(error, json) {
  if (error) throw error;
  root = d3.hierarchy(json);
  root.x0 = 0;
  root.y0 = 0;
  update(root, svg2, "svg2");
});


d3.json("c.json", function(error, json) {
  if (error) throw error;
  root = d3.hierarchy(json);
  root.x0 = 0;
  root.y0 = 0;
  update(root, svg3, "svg3");
});

function update(source, svg_var, svg_name) {

  // Compute the flattened node list.
    var nodes = source.descendants();
    var height = Math.max(500, nodes.length * barHeight + margin.top + margin.bottom);

document.getElementById(svg_name).setAttribute("height", height);

  d3.select(self.frameElement).transition()
      .duration(duration)
      .style("height", height + "px");

  // Compute the "layout". TODO https://github.com/d3/d3-hierarchy/issues/67
  var index = -1;
  source.eachBefore(function(n) {
    n.x = ++index * barHeight;
    n.y = n.depth * 20;
  });

  // Update the nodes…
  var node = svg_var.selectAll(".node")
    .data(nodes, function(d) { return d.id || (d.id = ++i); });

  var nodeEnter = node.enter().append("g")
      .attr("class", "node")
      .attr("transform", function(d) { return "translate(" + source.y0 + "," + source.x0 + ")"; })
      .style("opacity", 0);

  // Enter any new nodes at the parent's previous position.
  nodeEnter.append("rect")
      .attr("y", -barHeight / 2)
      .attr("height", barHeight)
      .attr("width", barWidth)
      .style("fill", color)
      .on("click", function(d) {
      if (d.children) {
        d._children = d.children;
        d.children = null;
      } else {
        d.children = d._children;
        d._children = null;
      }
      update(source, svg_var, svg_name);
    });

  nodeEnter.append("text")
      .attr("dy", 3.5)
      .attr("dx", 5.5)
      .text(function(d) { return d.data.attributes; });

  // Transition nodes to their new position.
    nodeEnter.transition()
      .duration(duration)
      .attr("transform", function(d) { return "translate(" + d.y + "," + d.x + ")"; })
      .style("opacity", 1);
    node.transition()
      .duration(duration)
      .attr("transform", function(d) { return "translate(" + d.y + "," + d.x + ")"; })
      .style("opacity", 1)
    .select("rect")
      .style("fill", color);

  // Transition exiting nodes to the parent's new position.
  node.exit().transition()
      .duration(duration)
      .attr("transform", function(d) { return "translate(" + source.y + "," + source.x + ")"; })
      .style("opacity", 0)
      .remove();

  // Update the links…
  var link = svg_var.selectAll(".link")
    .data(root.links(), function(d) { return d.target.id; });

  // Enter any new links at the parent's previous position.
  /*link.enter().insert("path", "g")
      .attr("class", "link")
      .attr("d", function(d) {
        var o = {x: source.x0, y: source.y0};
        return diagonal({source: o, target: o});
      })
    .transition()
      .duration(duration)
      .attr("d", diagonal);

  // Transition links to their new position.
  link.transition()
      .duration(duration)
      .attr("d", diagonal);

  // Transition exiting nodes to the parent's new position.
  link.exit().transition()
      .duration(duration)
      .attr("d", function(d) {
        var o = {x: source.x, y: source.y};
        return diagonal({source: o, target: o});
      })
      .remove();

  // Stash the old positions for transition.
  root.each(function(d) {
    d.x0 = d.x;
    d.y0 = d.y;
  });*/
}


function color(d) {
  return d._children ? "#3182bd" : d.children ? "#c6dbef" : "#fd8d3c";
}

</script>
c、 json文件：

{"attributes": "OUI", "children": [{"attributes": "LOT:  nom 13.CVC", "children": [{"attributes": "Tous_DPGF:  Profondeur 1", "children": [{"attributes": "Poste:  Rang Rang 1", "children": [{"attributes":"Debut_poste_Excel 0.0"}, {"attributes":"Fin_poste_Excel 19.0"}, {"attributes":"Mot_cle debut"}, {"attributes":"Rang Rang 1"}]}, {"attributes": "Poste:  Rang Rang 1", "children": [{"attributes":"Debut_poste_Excel 20.0"}, {"attributes":"Fin_poste_Excel 20.0"}, {"attributes":"Mot_cle chauffage"}, {"attributes":"Rang Rang 1"}]}]}]}]}
尝试在浏览器的deboguer中调整两个c_文件的svg高度，以查看我等待的最终结果，这样我们可以看到高度最大的较长svg从页面顶部开始，其他svg从底部开始，但我需要它们都从页面顶部开始。再次感谢你的帮助，对不起我的英语

我找到了以下解决方案

var cell;
var div = d3.select("body").append("div")
    .attr("id", "div")
    .attr("width", 1920);
cell = div.append("div").attr("class", "cell")
var svg = cell.append("svg")
    .attr("id", "svg")
    .attr("width", 600) // + margin.left + margin.right)
    .append("g")
    .attr("transform", "translate(30,30)");
cell = div.append("div").attr("class", "cell")
var svg2 = cell.append("svg")
    .attr("id", "svg2")
    .attr("width", 600) // + margin.left + margin.right)
    .append("g")
    .attr("transform", "translate(30,30)");
cell = div.append("div").attr("class", "cell")
var svg3 = cell.append("svg")
    .attr("id", "svg3")
    .attr("width", 600) // + margin.left + margin.right)
    .append("g")
    .attr("transform", "translate(30 30)");
还有一点CSS

#div { display: table-row; }
#div .cell { display: table-cell; vertical-align: top;}
您的代码将无法运行，因为根目录未定义，您无法从中获取链接。

我使用了简单的CSS并删除了.attrid，div.attrwidth，1920，它无论如何都不起任何作用

以下是我尝试过的CSS：

div#div {
  width: 1920px;
}
div#div svg {
 float: left;
}
普朗克：

注意：我不喜欢将HTML元素标记名指定为ID，因此我认为除div之外的ID是更好的选择。毕竟这是你的选择。

你在找类似的东西吗？是的！！！你是怎么做到的？使用浮动是老式的CSS来对齐块。我们现在有了更好的选择 
div#div {
  width: 1920px;
}
div#div svg {
 float: left;
}