javascript - D3.Js 的 SVG 高度

标签 javascript html d3.js

我遇到了一个小问题，实际上我有很多树并排水平对齐，问题是当三棵树的高度不同时，它们没有正确水平对齐。请帮我找到解决办法，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>

D.json 文件:

{"attributes": "DPGF", "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"}]}, {"attributes": "Poste:  Rang Rang 1", "children": [{"attributes":"Debut_poste_Excel 21.0"}, {"attributes":"Fin_poste_Excel 23.0"}, {"attributes":"Mot_cle Préambule"}, {"attributes":"Rang Rang 1"}]}, {"attributes": "Poste:  Rang Rang 1", "children": [{"attributes":"Debut_poste_Excel 24.0"}, {"attributes":"Fin_poste_Excel 25.0"}, {"attributes":"Mot_cle Préambule"}, {"attributes":"Rang Rang 1"}]}, {"attributes": "Poste:  Rang Rang 1", "children": [{"attributes":"Debut_poste_Excel 26.0"}, {"attributes":"Fin_poste_Excel 27.0"}, {"attributes":"Mot_cle production thermique"}, {"attributes":"Rang Rang 1"}]}, {"attributes": "Poste:  Rang Rang 1", "children": [{"attributes":"Debut_poste_Excel 28.0"}, {"attributes":"Fin_poste_Excel 65.0"}, {"attributes":"Mot_cle chauffage"}, {"attributes":"Rang Rang 1"}, {"attributes": "Tous_DPGF:  Profondeur 2", "children": [{"attributes": "Poste:  Rang Rang 2", "children": [{"attributes":"Debut_poste_Excel 31.0"}, {"attributes":"Fin_poste_Excel 65.0"}, {"attributes":"Mot_cle Échangeur"}, {"attributes":"Rang Rang 2"}, {"attributes": "Tous_DPGF:  Profondeur 3", "children": [{"attributes": "Poste:  Rang Rang 4", "children": [{"attributes":"Debut_poste_Excel 35.0"}, {"attributes":"Fin_poste_Excel 35.0"}, {"attributes":"Mot_cle Manchon"}, {"attributes":"Rang Rang 4"}]}, {"attributes": "Poste:  Rang Rang 4", "children": [{"attributes":"Debut_poste_Excel 36.0"}, {"attributes":"Fin_poste_Excel 36.0"}, {"attributes":"Mot_cle Vanne"}, {"attributes":"Rang Rang 4"}]}, {"attributes": "Poste:  Rang Rang 4", "children": [{"attributes":"Debut_poste_Excel 37.0"}, {"attributes":"Fin_poste_Excel 37.0"}, {"attributes":"Mot_cle Thermomètre"}, {"attributes":"Rang Rang 4"}]}, {"attributes": "Poste:  Rang Rang 4", "children": [{"attributes":"Debut_poste_Excel 38.0"}, {"attributes":"Fin_poste_Excel 38.0"}, {"attributes":"Mot_cle Sonde"}, {"attributes":"Rang Rang 4"}]}, {"attributes": "Poste:  Rang Rang 4", "children": [{"attributes":"Debut_poste_Excel 39.0"}, {"attributes":"Fin_poste_Excel 39.0"}, {"attributes":"Mot_cle Soupape"}, {"attributes":"Rang Rang 4"}]}, {"attributes": "Poste:  Rang Rang 4", "children": [{"attributes":"Debut_poste_Excel 40.0"}, {"attributes":"Fin_poste_Excel 41.0"}, {"attributes":"Mot_cle Pressostat"}, {"attributes":"Rang Rang 4"}]}, {"attributes": "Poste:  Rang Rang 4", "children": [{"attributes":"Debut_poste_Excel 42.0"}]}]}]}]}]}]}]}]}

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_file 的 svg-height 大小，以查看我正在等待的最终结果，这样我们就可以看到较长的 SVG(具有最大高度)从顶部开始页面的，其他 svg 从底部开始，但我需要它们全部从页面顶部开始。再次感谢您的帮助，并对我的英语感到抱歉；)

最佳答案

我使用了简单的 CSS 并删除了 .attr("id", "div").attr("width", 1920) ，它无论如何也不会执行任何操作。

这是我尝试过的 CSS:

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

Plunkr:http://plnkr.co/edit/Pgqbn4eIECncuqhBVp6U?p=preview

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

关于javascript - D3.Js 的 SVG 高度，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/52283688/

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