我正在制作一个饼图网络,我整个周末一直在努力为每个馅饼楔子设置一个图例或工具提示。这是我的工作Fiddle没有标签,我已粘贴下面的代码。如何从标签变量中输入组号或标签?
提前致谢!!
代码:
<!DOCTYPE html>
<html lang="en">
<head>
<script type="text/javascript" src="http://d3js.org/d3.v3.min.js"></script>
<style>
.node {
stroke: #fff;
stroke-width: 1.5px;
}
.link {
stroke: #808080;
stroke-opacity: .6;
}
</style>
</head>
<body>
<script type="text/javascript">
graph = { "nodes":[{"proportions": [
{"group":1, "value": 25 },
{"group":2, "value": 0 },
{"group":3, "value": 0 },
{"group":4, "value": 0 }],"radius":25,"x":1000,"y":262.5},{"proportions": [
{"group":1, "value": 0 },
{"group":2, "value": 25 },
{"group":3, "value": 0 },
{"group":4, "value": 0 }],"radius":25,"x":191.3501125,"y":70.44565171875},{"proportions": [
{"group":1, "value": 0 },
{"group":2, "value": 0 },
{"group":3, "value": 25 },
{"group":4, "value": 0 }],"radius":25,"x":25,"y":30.9375},{"proportions": [
{"group":1, "value": 0 },
{"group":2, "value": 0 },
{"group":3, "value": 0 },
{"group":4, "value": 25 }],"radius":25,"x":833.572375,"y":222.9734390625}],"links": [{ "source":0, "target":1, "length":900, "width":9},
{ "source":0, "target":3, "length":900, "width":9},
{ "source":1, "target":2, "length":900, "width":9},
{ "source":2, "target":3, "length":900, "width":9}]
}
var labels = ['mycave1','mycave2','mycave3','mycave4'];
var width = 4000,
height = 1000,
radius = 25,
color = d3.scale.category10();
var pie = d3.layout.pie()
.sort(null)
.value(function(d) { return d.value; });
var arc = d3.svg.arc()
.outerRadius(radius)
.innerRadius(0);
var svg = d3.select("body").append("svg")
.attr("width", width)
.attr("height", height);
var force = d3.layout.force()
.charge(-120)
.linkDistance(4 * radius)
.size([width, height]);
force.nodes(graph.nodes)
.links(graph.links)
.start();
var link = svg.selectAll(".link")
.data(graph.links)
.enter().append("line")
.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; })
.attr("class", "link");
var node = svg.selectAll(".node")
.data(graph.nodes)
.enter().append("g")
.attr("class", "node")
.attr("transform", function(d) { return "translate(" + d.x + "," + d.y + ")"});
node.each(function(d){
arc = arc.outerRadius(d.radius);
d3.select(this)
.selectAll("path")
.data(function(d){ return pie(d.proportions); })
.enter().append("svg:path")
.attr("d", arc)
.style("fill", function(d,i){ return color(d.data.group) });
});
</script>
</body>
</html>
答案 0 :(得分:0)
对于工具提示,只需在每个路径上附加一个title元素。
.append("svg:title")
.text(function(d) {return "Group "+d.data.group;});
这是一个小提琴:http://jsfiddle.net/ctsprjyq/18/
如果你想要相应的标签(第1组= mycave1,第2组= mycave2等),只需使用组值作为标签数组的索引。
.append("svg:title")
.text(function(d) {return labels[d.data.group-1];});