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我试图在D3中创建一个决策树。D3.js决策树 - 文本包装，边框，加载圆圈的数量
问题： - 本文发生在右侧，可以/如何设置边界框来停止该边界？
圆圈中的文字未包裹。我愿意让圈子更大以适应文本，但是包装仍然是一个问题。
我该如何获得只显示负载的前3个圆圈？
var treeData = [
{
"name": "TK question here that's long",
"content":"Question here long",
"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"
}
]
}
];
// ************** Generate the tree diagram \t *****************
var margin = {top: 20, right: 120, bottom: 20, left: 120},
\t width = 860 - margin.right - margin.left,
\t height = 500 - margin.top - margin.bottom;
\t
var i = 0,
\t duration = 750,
\t root;
var tree = d3.layout.tree()
\t .size([height, width]);
var diagonal = d3.svg.diagonal()
\t .projection(function(d) { return [d.y, d.x]; });
var svg = d3.select("body").append("svg")
\t .attr("width", width + margin.right + margin.left)
\t .attr("height", height + margin.top + margin.bottom)
.append("g")
\t .attr("transform", "translate(" + margin.left + "," + margin.top + ")");
root = treeData[0];
root.x0 = height/2;
root.y0 = 0;
update(root);
d3.select(self.frameElement).style("height", "500px");
function update(source) {
// Compute the new tree layout.
var nodes = tree.nodes(root).reverse(),
\t 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")
\t .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")
\t .attr("class", "node")
\t .attr("transform", function(d) { return "translate(" + source.y0 + "," + source.x0 + ")"; })
\t .on("click", click);
nodeEnter.append("circle")
\t .attr("r", 1e-6)
\t .style("fill", function(d) { return d._children ? "lightsteelblue" : "#fff"; });
nodeEnter.append("text")
\t .attr("x", function(d) { return d.children || d._children ? -33 : 13; })
\t .attr("dy", ".35em")
\t .attr("text-anchor", function(d) { return d.children || d._children ? "end" : "start"; })
\t .text(function(d) { return d.name; })
\t .style("fill-opacity", 1e-6);
nodeEnter.append("text")
.attr("x", 0)
.attr("dy", ".35em")
.attr("text-anchor", "middle")
.text(function(d) { return d.content; });
// Transition nodes to their new position.
var nodeUpdate = node.transition()
\t .duration(duration)
\t .attr("transform", function(d) { return "translate(" + d.y + "," + d.x + ")"; });
nodeUpdate.select("circle")
\t .attr("r", 30)
\t .style("fill", function(d) { return d._children ? "lightsteelblue" : "#fff"; });
nodeUpdate.select("text")
\t .style("fill-opacity", 1);
// Transition exiting nodes to the parent's new position.
var nodeExit = node.exit().transition()
\t .duration(duration)
\t .attr("transform", function(d) { return "translate(" + source.y + "," + source.x + ")"; })
\t .remove();
nodeExit.select("circle")
\t .attr("r", 1e-6);
nodeExit.select("text")
\t .style("fill-opacity", 1e-6);
// Update the links…
var link = svg.selectAll("path.link")
\t .data(links, function(d) { return d.target.id; });
// Enter any new links at the parent's previous position.
link.enter().insert("path", "g")
\t .attr("class", "link")
\t .attr("d", function(d) {
\t \t var o = {x: source.x0, y: source.y0};
\t \t return diagonal({source: o, target: o});
\t });
// Transition links to their new position.
link.transition()
\t .duration(duration)
\t .attr("d", diagonal);
// Transition exiting nodes to the parent's new position.
link.exit().transition()
\t .duration(duration)
\t .attr("d", function(d) {
\t \t var o = {x: source.x, y: source.y};
\t \t return diagonal({source: o, target: o});
\t })
\t .remove();
// Stash the old positions for transition.
nodes.forEach(function(d) {
\t d.x0 = d.x;
\t d.y0 = d.y;
});
}
// Toggle children on click.
function click(d) {
if (d.children) {
\t d._children = d.children;
\t d.children = null;
} else {
\t d.children = d._children;
\t d._children = null;
}
update(d);
}\t .node {
\t \t cursor: pointer;
\t }
\t .node circle {
\t fill: #fff;
\t stroke: steelblue;
\t stroke-width: 3px;
\t }
\t .node text {
\t font: 12px sans-serif;
\t }
\t .link {
\t fill: none;
\t stroke: #ccc;
\t stroke-width: 2px;
\t }<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.4.11/d3.min.js"></script>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Tree Example</title>
</head>
<body>
\t
</body>
</html>
我觉得你的意思链接到此：http://bl.ocks.org/mbostock/7555321 我已经加入从功能换到我的代码，但它不工作。 – Jess
是我的错误链接！该函数起作用，你确定你提供了正确的值并在创建文本后调用它？ – tomtomtom
我只需要将函数底部的“value”改为“content”对吧？我想不是，我似乎无法使其工作... http://jsfiddle.net/jarstin07/g8x4gpkt/ – Jess