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javascript - 文本未显示在 forcelayout d3js 中但存在于 View 中

转载 作者:行者123 更新时间:2023-11-29 16:12:31 27 4
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当从 Web 检查器查看时,文本在源代码中可见,但在真实图形中不可见

<html>
<head>
<title>D3</title>
<script src="d3.min.js"> </script>
</head>
<body>

<script type="text/javascript">

//Width and height
var w = 500;
var h = 300;

//Original data
var dataset = {
nodes: [
{ name: "Adam" },
{ name: "Bob" },
{ name: "Carrie" },
{ name: "Donovan" },
{ name: "Edward" },
{ name: "Felicity" },
{ name: "George" },
{ name: "Hannah" },
{ name: "Iris" },
{ name: "Jerry" }
],
edges: [
{ source: 0, target: 1 },
{ source: 0, target: 2 },
{ source: 0, target: 3 },
{ source: 0, target: 4 },
{ source: 1, target: 5 },
{ source: 2, target: 5 },
{ source: 2, target: 5 },
{ source: 3, target: 4 },
{ source: 5, target: 8 },
{ source: 5, target: 9 },
{ source: 6, target: 7 },
{ source: 7, target: 8 },
{ source: 8, target: 9 }
]
};

//Initialize a default force layout, using the nodes and edges in dataset
var force = d3.layout.force()
.nodes(dataset.nodes)
.links(dataset.edges)
.size([w, h])
.linkDistance([50])
.charge([-100])
.start();

var colors = d3.scale.category10();

//Create SVG element
var svg = d3.select("body")
.append("svg")
.attr("width", w)
.attr("height", h);

//Create edges as lines
var edges = svg.selectAll("line")
.data(dataset.edges)
.enter()
.append("line")
.style("stroke", "#ccc")
.style("stroke-width", 1);

//Create nodes as circles
var nodes = svg.selectAll("circle")
.data(dataset.nodes)
.enter()
.append("circle")
.attr("r", 10)
.style("fill", function(d, i) {
return colors(i);
})
.call(force.drag);

//To display text
nodes.append("text")
.attr("x", 12)
.attr("dy", ".35em")
.text(function(d){ return d.name;

});
//Every time the simulation "ticks", this will be called
force.on("tick", function() {

edges.attr("x1", function(d) { return d.source.x; })
.attr("y1", function(d) { return d.source.y; })
.attr("x2", function(d) { return d.target.x; })
.attr("y2", function(d) { return d.target.y; });

// nodes.attr("cx", function(d) { return d.x; })
// .attr("cy", function(d) { return d.y; });
nodes.attr("transform", function(d){
return "translate(" + d.x + "," + d.y + ")";
});

});


</script>
</body>
</html>

这里我按照这个例子: http://bl.ocks.org/mbostock/2706022

并且还关注了这篇文章: D3.js, force-graph, cannot display text/label of nodes

这是此代码的 jsfiddle: http://jsfiddle.net/devprashant/7kWwL/

最佳答案

您遇到的问题是您当前的代码附加了 <text><circle> ,它不会出现。相反,您需要创建一个组 <g>对于同时包含 <circle> 的每个节点<text> .试试这个:

var nodes = svg.selectAll("g")
.data(dataset.nodes).enter()
.append("g");

nodes.append("circle")
.attr("r", 10)
.style("fill", function (d, i) { return colors(i); })
.call(force.drag);

nodes.append("text")
.attr("x", 12)
.attr("dy", ".35em")
.text(function (d) { return d.name; });

已更新 JSFiddle here .

关于javascript - 文本未显示在 forcelayout d3js 中但存在于 View 中,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/24388982/

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