D3:树状图中的超链接 [英] D3: Hyperlinks in tree diagram
问题描述
我无法在 Reingold-Tifold 树图中超链接子元素.该图是在 D3 中构建的，基于 Mike Bostock 使用的示例:http://bl.ocks.org/mbostock/4339184
I'm having trouble hyperlinking child elements in a Reingold-Tifold tree graph. The graph is built in D3 and is based on the one that Mike Bostock uses an example: http://bl.ocks.org/mbostock/4339184
我的代码和我的 JSON 文件的一部分如下.
My code and a segment of my JSON file are below.
此时，图表工作正常 - 如果我单击父节点，它会展开以显示包含在我的 JSON 文件中的一系列子节点.但是当我到达孩子级别时，我想让这个词超链接.我不明白该怎么做.
At this point, the graph works fine - if I click on a parent node, it expands to reveal a series of child nodes that are contained in my JSON file. But when I get to the child level, I want to make the word hyperlinked. I don't understand how to do that.
我使用过以前的 SO 问题/答案 - d3.js 对象中的超链接 - 了解如何向我的 JSON 数据添加 URL(此时一切都只是链接到 Google.co.uk).但我不明白如何将该 URL 链接到我的树图，以便子节点成为超链接.
I've used a previous SO question/answer - Hyperlinks in d3.js objects - to understand how to add a URL to my JSON data (at this point everything is just linking to Google.co.uk). But I don't understand how to link that URL to my tree graph so that the child nodes become hyperlinked.
你能告诉我如何做到这一点吗?
Can you let me know how I can do this?
在此先感谢您的帮助.(感谢@IH8，到目前为止您的帮助.)
Thank you, in advance, for any help. (And thanks, @IH8, for your assistance so far.)
马特
<html xmlns:xlink="http://www.w3.org/1999/xlink">
<head><meta charset="utf-8">
<style>
.node {
cursor: pointer;
}
.node circle {
fill: #FF0000;
stroke: black;
stroke-width: 1.5px;
}
.node text {
font: 11px sans-serif;
}
.link {
fill: none;
stroke: #FF0000;
stroke-width: 1.5px;
}
</style>
<style id="style-1-cropbar-clipper">/* Copyright 2014 Evernote Corporation. All rights reserved. */
.en-markup-crop-options {
top: 18px !important;
left: 50% !important;
margin-left: -100px !important;
width: 200px !important;
border: 2px rgba(255,255,255,.38) solid !important;
border-radius: 4px !important;
}
.en-markup-crop-options div div:first-of-type {
margin-left: 0px !important;
}
</style></head><body>
<script src="http://d3js.org/d3.v3.min.js"></script>
<script>
var margin = {top: 20, right: 120, bottom: 20, left: 120},
width = 960 - margin.right - margin.left,
height = 800 - margin.top - margin.bottom;
var i = 0,
duration = 750,
root;
var tree = d3.layout.tree()
.size([height, width]);
var diagonal = d3.svg.diagonal()
.projection(function(d) { return [d.y, d.x]; });
var svg = d3.select("body").append("svg")
.attr("width", width + margin.right + margin.left)
.attr("height", height + margin.top + margin.bottom)
.append("g")
.attr("transform", "translate(" + margin.left + "," + margin.top + ")");
d3.json("/sites/default/files/tcs/D3/data/turbo.json", function(error, turbo) {
root = turbo;
root.x0 = height / 2;
root.y0 = 0;
function collapse(d) {
if (d.children) {
d._children = d.children;
d._children.forEach(collapse);
d.children = null;
}
}
root.children.forEach(collapse);
update(root);
});
d3.select(self.frameElement).style("height", "800px");
function update(source) {
// Compute the new tree layout.
var nodes = tree.nodes(root).reverse(),
links = tree.links(nodes);
// Normalize for fixed-depth.
nodes.forEach(function(d) { d.y = d.depth * 180; });
// Update the nodes…
var node = svg.selectAll("g.node")
.data(nodes, function(d) { return d.id || (d.id = ++i); });
// Enter any new nodes 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 + ")"; })
.on("click", click);
nodeEnter.append("circle")
.attr("r", 1e-6)
.style("fill", function(d) { return d._children ? "red" : "#fff"; });
nodeEnter.each(function(d){
var thisNode = d3.select(this);
if (!d.children) {
thisNode.append("a")
.attr("xlink:href", function(d) { return d.url; })
.append("text")
.attr("x", 8)
.attr("dy", 3)
.attr("text-anchor", "start")
.text(function(d) { return d.name; });
} else {
thisNode.append("text")
.attr("x", -8)
.attr("dy", 3)
.attr("text-anchor", "end")
.text(function(d) { return d.name; });
}
});
// Transition nodes to their new position.
var nodeUpdate = node.transition()
.duration(duration)
.attr("transform", function(d) { return "translate(" + d.y + "," + d.x + ")"; });
nodeUpdate.select("circle")
.attr("r", 4.5)
.style("fill", function(d) { return d._children ? "red" : "#fff"; });
nodeUpdate.select("text")
.style("fill-opacity", 1);
// Transition exiting nodes to the parent's new position.
var nodeExit = node.exit().transition()
.duration(duration)
.attr("transform", function(d) { return "translate(" + source.y + "," + source.x + ")"; })
.remove();
nodeExit.select("circle")
.attr("r", 1e-6);
nodeExit.select("text")
.style("fill-opacity", 1e-6);
// Update the links…
var link = svg.selectAll("path.link")
.data(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 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.
nodes.forEach(function(d) {
d.x0 = d.x;
d.y0 = d.y;
});
}
// Toggle children on click.
function click(d) {
if (d.children) {
d._children = d.children;
d.children = null;
} else {
d.children = d._children;
d._children = null;
}
update(d);
}
</script>
</body>
</html>
我的 JSON 文件的一部分:
A portion of my JSON file:
{
"name": "turbo",
"children": [
{
"name": "Level 1",
"children": [
{
"name": "Google",
"children": [
{"name": "Website", "size": 3938, "URL":"http://www.google.co.uk"},
{"name": "CommunityStructure", "size": 3812, "URL":"http://www.google.co.uk"},
{"name": "HierarchicalCluster", "size": 6714, "URL":"http://www.google.co.uk"},
{"name": "MergeEdge", "size": 743, "URL":"http://www.google.co.uk"}
]
},
{
"name": "graph",
"children": [
{"name": "BetweennessCentrality", "size": 3534, "URL":"http://www.google.co.uk"},
{"name": "LinkDistance", "size": 5731, "URL":"http://www.google.co.uk"},
{"name": "MaxFlowMinCut", "size": 7840, "URL":"http://www.google.co.uk"},
{"name": "ShortestPaths", "size": 5914, "URL":"http://www.google.co.uk"},
{"name": "SpanningTree", "size": 3416, "URL":"http://www.google.co.uk"}
]
},
{
"name": "optimization",
"children": [
{"name": "AspectRatioBanker", "size": 7074, "URL":"http://www.google.co.uk"}
]
}
]
},
. . .
推荐答案
似乎您在创建数据集 url 属性时犯了一个小错误，或者您应该修改用于添加 xlink:href 的代码a 元素的属性.您正在致电:
Seems you've made a slight mistake when creating your dataset url attribute, or you should've adapted the code you're using to add the xlink:href attribute to the a element. You're calling:
.attr("xlink:href", function(d) { return d.url; })
但是在您的数据集中，属性定义如下:
But in your dataset the attribute defined like this:
"URL": "http://www.google.co.uk"
那些不匹配的，你应该把你的代码改成这样:
Those don't match, you should change your code to this:
.attr("xlink:href", function(d) { return d.URL; })
或者你的数据集:
"url": "http://www.google.co.uk"
请记住，JSON 属性的名称区分大小写.
Remember that names of JSON properties are case-sensitive.
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