大型树d3 v4中的重叠节点

Question

我用样本光斑数据构建了一个简单的树。 但是，此树不适合我的svg，并且所有节点都相互重叠，如演示中所示。 有什么方法可以解决给定SVG画布宽度和高度中子节点重叠的问题？ 我尝试了此处给出的分隔，但是没有用。 而且我不知道如何在d3 v4中解决此问题。

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"size": 3174}, {"name": "Layout", "size": 7881}, {"name": "NodeLinkTreeLayout", "size": 12870}, {"name": "PieLayout", "size": 2728}, {"name": "RadialTreeLayout", "size": 12348}, {"name": "RandomLayout", "size": 870}, {"name": "StackedAreaLayout", "size": 9121}, {"name": "TreeMapLayout", "size": 9191} ] }, {"name": "Operator", "size": 2490}, {"name": "OperatorList", "size": 5248}, {"name": "OperatorSequence", "size": 4190}, {"name": "OperatorSwitch", "size": 2581}, {"name": "SortOperator", "size": 2023} ] }, {"name": "Visualization", "size": 16540} ] } ] } var margin = {top: 20, right: 90, bottom: 30, left: 90}, width = 1060 - margin.left - margin.right, height = 500 - margin.top - margin.bottom; var svg = d3.select("#tree_container"). append("svg"). attr("width", width + margin.right + margin.left). attr("height", height + margin.top + margin.bottom).call(d3.zoom().on("zoom", function () { svg.attr("transform", d3.event.transform) })) .append("g"). attr("transform", "translate(" + margin.left + "," + margin.top + ")"); var i = 0, duration = 500, root; var panSpeed = 200; var panBoundary = 20; var treemap = d3.tree(). size([height, width]).separation(function separation(a, b) { return a.parent == b.parent ? 2 : 2; }); root = d3.hierarchy(data, function(d) { return d.children; }); root.x0 = height / 2; root.y0 = 0; update(root,svg,root); //create zoom handler //specify what to do when zoom event listener is triggered //add zoom behaviour to the svg element backing our graph. //same thing as svg.call(zoom_handler); function update(source,svg,root) { // Assigns the x and y position for the nodes var treeData = treemap(root); //console.log(treeData) // Compute the new tree layout. var nodes = treeData.descendants(), links = treeData.descendants().slice(1); nodes.forEach(function(d){ if (d.parent!=null){ d.depth = d.parent.depth+1 d.height=d.parent.height-1; } }); // Normalize for fixed-depth. nodes.forEach(function(d){ dy = d.depth * 180 }); // ### LINKS // Update the links... var link = svg.selectAll('line.link'). data(links, function(d) { return d.id; }); // Enter any new links at the parent's previous position. var linkEnter = link.enter().insert('path', "g") .attr("class", "link") .attr('d', function(d){ var o = {x: source.y, y: source.x} return diagonal(o, o) }); // UPDATE var linkUpdate = linkEnter.merge(link); linkUpdate.transition() .duration(duration) .attr('d', function(d){ return diagonal(d, d.parent) }); // Remove any exiting links var linkExit = link.exit().transition() .duration(duration) .attr('d', function(d) { var o = {x: source.y, y: source.x} return diagonal(o, o) }) .remove(); // Store the old positions for transition. // ### CIRCLES // Update the nodes... node = svg.selectAll('g.node') .data(nodes, function(d) { return d.id || (d.id = ++i); }); // Enter any new modes at the parent's previous position. var nodeEnter = node.enter(). append('g'). attr('class', 'node'). attr("transform", function(d) { return "translate(" + source.y0 + "," + source.x0 + ")"; }) // Add Circle for the nodes nodeEnter.append('circle'). attr('class', 'node'). attr('r', 10). style("fill", function(d) { return "#0e4677"; }); nodeEnter.append("text") .attr("dx", ".60em") .attr("x", function(d) { return d.children ? -30 : 30; }) .style("text-anchor", "middle") .text(function(d) { return d.data.name; }); // Update var nodeUpdate = nodeEnter.merge(node); // Transition to the proper position for the node nodeUpdate.transition(). duration(duration). attr("transform", function(d) { return "translate(" + dy + "," + dx + ")"; }); // Update the node attributes and style nodeUpdate.select('circle.node'). attr('r', 10). style("fill", function(d) { return "#0e4677"; }). attr('cursor', 'pointer'); // Remove any exiting nodes var nodeExit = node.exit(). transition(). duration(duration). attr("transform", function(d) { return "translate(" + source.y + "," + source.x + ")"; }). remove(); // On exit reduce the node circles size to 0 nodeExit.select('circle').attr('r', 0); // Store the old positions for transition. nodes.forEach(function(d){ d.x0 = dx; d.y0 = dy; }); } function diagonal(s, d) { path = `M ${sy} ${sx} C ${(sy + dy)/2} ${sx}, ${(sy + dy) / 2} ${dx}, ${dy} ${dx}` return path } 

 .node circle { fill: #fff; stroke: steelblue; stroke-width: 3px; } .fadedCircle{ display: none; } .node text { font: 12px sans-serif; } .link { fill: none; stroke: #ccc; stroke-width: 2px; } .container { width: 100%; height: 600px; margin: auto; padding: 10px; } .tree { width: 75%; height: 600px; float: left; } .recomwindow { width: 25%; height: 600px; float: right; } .dialogbox { background-color: lightgrey; width: 300px; border: 2px solid #0d0d0d; font-family: Arial; margin-top: 100px; margin-right: 50px; background:#fff; } #dialogbox1{ display: none; } #dialogbox2{ display: none; } #dialogbox3{ display: none; } .dialogtitle{ text-align: center; width: 300px; height: 25px; background-color: #CCCCCC; padding-top: 4px; } .dialogbody{ text-align: center; padding-top: 25px; padding-right: 25px; padding-bottom: 25px; padding-left: 25px; background: #fff; } .xbutton{ float:right; display:inline-block; padding:2px 5px; background:#ccc; } .xbutton:hover { float:right; display:inline-block; padding:2px 5px; background:#ccc; color:#fff; } 

 <!DOCTYPE html> <meta charset="UTF-8"> <!DOCTYPE html> <meta charset="utf-8"> <link rel="stylesheet" href="styles.css"> <script src = "https://code.jquery.com/jquery-1.10.2.js"></script> <script src = "https://code.jquery.com/ui/1.10.4/jquery-ui.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/d3/4.2.2/d3.min.js"></script> <script src="https://d3js.org/d3-path.v1.min.js"></script> <script src="https://d3js.org/d3-shape.v1.min.js"></script> <script src="https://d3js.org/d3-dispatch.v1.min.js"></script> <body> <div class="container"> <div class="recomwindow" id="recom_container"> <div class="dialogbox" id="dialogbox1" > <div class="dialogtitle" id="dTitle"> How to interact nodes? <input type="button" class ="xbutton" id="xbutton" value="X" onclick="windowClose();"></div> <div class ="dialogbody" id="dBody"> <button type="button" class="choice" id="duplicatenodes" ">Copy node in each branch</button> <button type="button" class="choice" id="mergenodes" ">Merge with this node in dropping point</button> </div> </div> <div class="dialogbox" id="dialogbox2" > <div class="dialogtitle" id="dTitle"> How to interact nodes? <input type="button" class ="xbutton" id="xbutton2" value="X" onclick="windowClose();"></div> <div class ="dialogbody" id="dBody"> <button type="button" class="choice" id="mergenodes2" ">Merge with this node in dropping point</button> </div> </div> <div class="dialogbox" id="dialogbox3" > <div class="dialogtitle" id="dTitle"> How to interact node and link? <input type="button" class ="xbutton" id="xbutton3" value="X" onclick="windowClose();"></div> <div class ="dialogbody" id="dBody"> </div> </div> </div> <div class="tree" id= "tree_container"> <script src="main.js"></script> </div> </div> </body> 

请注意，svg canvas的尺寸应与预期的相同，因为我将25％的宽度保留给其他用途。

Answer 1

您必须在10*height的较大区域上渲染树

var treemap = d3.tree()
  .size([10*height, width])
  .separation(function separation(a, b) { return a.parent == b.parent ? 2 : 2; });

然后将缩放比例设置为0.1的初始比例。

更改代码，因为使用的陷阱与如何避免第一次缩放或平移d3.zoom时使用的陷阱相同？

您的HTML无效。 使用语法突出显示的编辑器。