This is a response to the stackoverflow.com question How do I create a tree layout using JSON data in d3.v4 - without stratify().
Created
August 2, 2016 23:34
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d3v4 JSON Tree
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| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <style> | |
| .node circle { | |
| fill: #999; | |
| } | |
| .node text { | |
| font: 10px sans-serif; | |
| } | |
| .node--internal circle { | |
| fill: #555; | |
| } | |
| .node--internal text { | |
| text-shadow: 0 1px 0 #fff, 0 -1px 0 #fff, 1px 0 0 #fff, -1px 0 0 #fff; | |
| } | |
| .link { | |
| fill: none; | |
| stroke: #555; | |
| stroke-opacity: 0.4; | |
| stroke-width: 1.5px; | |
| } | |
| </style> | |
| <svg width="500" height="300"></svg> | |
| <script src="//d3js.org/d3.v4.min.js"></script> | |
| <script> | |
| var svg = d3.select("svg"), | |
| width = +svg.attr("width"), | |
| height = +svg.attr("height"), | |
| g = svg.append("g").attr("transform", "translate(60,0)"); | |
| var tree = d3.cluster() | |
| .size([height, width - 160]); | |
| var stratify = d3.stratify() | |
| .parentId(function(d) { return d.id.substring(0, d.id.lastIndexOf(".")); }); | |
| d3.json("treeData.json", function(error, treeData) { | |
| if (error) throw error; | |
| var root = d3.hierarchy(treeData); | |
| tree(root); | |
| var link = g.selectAll(".link") | |
| .data(root.descendants().slice(1)) | |
| .enter().append("path") | |
| .attr("class", "link") | |
| .attr("d", function(d) { | |
| return "M" + d.y + "," + d.x | |
| + "C" + (d.parent.y + 100) + "," + d.x | |
| + " " + (d.parent.y + 100) + "," + d.parent.x | |
| + " " + d.parent.y + "," + d.parent.x; | |
| }); | |
| var node = g.selectAll(".node") | |
| .data(root.descendants()) | |
| .enter().append("g") | |
| .attr("class", function(d) { return "node" + (d.children ? " node--internal" : " node--leaf"); }) | |
| .attr("transform", function(d) { | |
| return "translate(" + d.y + "," + d.x + ")"; | |
| }) | |
| node.append("circle") | |
| .attr("r", 2.5); | |
| node.append("text") | |
| .attr("dy", 3) | |
| .attr("x", function(d) { return d.children ? -8 : 8; }) | |
| .style("text-anchor", function(d) { return d.children ? "end" : "start"; }) | |
| .text(function(d) { | |
| return d.data.name; | |
| }); | |
| }); | |
| </script> |
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| { | |
| "name": "Top Level", | |
| "parent": "null", | |
| "children": [ | |
| { | |
| "name": "Level 2: A", | |
| "parent": "Top Level", | |
| "children": [ | |
| { | |
| "name": "Son of A", | |
| "parent": "Level 2: A" | |
| }, | |
| { | |
| "name": "Daughter of A", | |
| "parent": "Level 2: A" | |
| } | |
| ] | |
| }, | |
| { | |
| "name": "Level 2: B", | |
| "parent": "Top Level" | |
| } | |
| ] | |
| } |
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