我正在尝试理解如何使用Div在页面上放置一个SVG元素....我们的代码如下所示:(原谅有一百万件东西可能更干净了......)
我试图将Div放入体内,给它一个id,然后将我的SVG元素放入其中。 div是正方形,我在传说的SVG元素下调用square div,然后传说消失了,我只得到一个div ....什么给出了?
<!DOCTYPE html>
<meta charset="utf-8">
<style type="text/css">
body {
font: 12px sans-serif;}
svg {
padding: 20px 0 0 10px;}
.arc {
stroke: #fffff; }
a:link {
color:#58B341;
background-color:transparent;
text-decoration:none;
}
a:visited {
color:#000000;
background-color:transparent;
text-decoration:none;
}
a:hover {
color:#1AA079;
background-color:transparent;
text-decoration:underline;
}
a:active {
color:#ff0000;
background-color:transparent;
text-decoration:underline;
}
</style>
<body>
**<div id="squares">**
</div>
<script src="http://d3js.org/d3.v3.min.js"></script>
<script>
var radius = 230,
padding = 10;
var color = d3.scale.ordinal()
.range(["#FFF587", "#FFF9B3", "#E0ECBD", "#C4E0A3", "#C3DD97", "#B9D87A", "#A1CE60", "#7DC050", "#58B341", "#38AC3D", "#26A74E", "#1FA465", "#1AA079", "#1A9A8D", "#199A8B", "#1D859D", "#1264AC", "#15559E", "#173572", "#1E194F"]);
//WIDTH OF CIRCLE STROKE
var arc = d3.svg.arc()
.outerRadius(radius)
.innerRadius(radius - 100);
var pie = d3.layout.pie()
.sort(null)
.value(function(d) { return d.population; });
d3.csv("data1992.csv", function(error, data) {
color.domain(d3.keys(data[0]).filter(function(key) { return key !== "State"; }));
data.forEach(function(d) {
d.ages = color.domain().map(function(name) {
return {name: name, population: +d[name]};
});
});
//position of legend
**var legend = d3.select("div.squares").append("svg")**
.attr("class", "legend")
.attr("width",radius * 2)
.attr("height", radius * 2)
.selectAll("g")
.data(color.domain().slice().reverse())
.enter().append("g")
.attr("transform", function(d, i) { return "translate(0," + i * 20 + ")"; });
//CONTROLS WIDTH OF SQUARE IN LEGEND
legend.append("rect")
.attr("width", 18)
.attr("height", 18)
.style("fill", color);
//CONTROLS PLACEMENT OF LIST NEXT TO SQUARES
legend.append("text")
.attr("x", 24)
.attr("y", 9)
.attr("dy", ".35em")
.text(function(d) { return d; });
//HEIGHT OF PLACEMENT OF CIRCLE
var svg = d3.select("body").selectAll(".pie")
.data(data)
.enter().append("svg")
.attr("class", "pie")
.attr("width", radius * 2)
.attr("height", radius * 2)
.append("g")
.attr("transform", "translate(" + radius + "," + radius + ")");
svg.selectAll(".arc")
.data(function(d) { return pie(d.ages); })
.enter().append("path")
.attr("class", "arc")
.attr("d", arc)
.style("fill", function(d) { return color(d.data.name); });
svg.append("text")
.attr("dy", ".35em")
.style("text-anchor", "middle")
.text(function(d) { return d.State; });
});
</script>
</body>
答案 0 :(得分:1)
根据我上面的评论,请确保您选择正确。目前,您正在使用id设置div(并且没有特定的类),因此您必须将其选为:
var legend = d3.select("div#squares")...
或者,你可以在div上申请一个课程(不能说什么更好 - 取决于你打算用它做什么)
要了解选择器,请参阅例如在这里:http://www.w3schools.com/cssref/css_selectors.asp