如何在d3.js的饼图中放置图例 [英] How to put a legend in a pie chart in d3.js
本文介绍了如何在d3.js的饼图中放置图例的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我在d3.js中创建了此饼图，并希望在其上添加一些图例.但是到目前为止，我几乎阅读的所有文档仅适用于d3.js第3版，而v5发生了很多变化.有人说，已经有内置的d3图例制造商，我不知道如何使用它.请帮忙.
I have this pie chart created in d3.js and want to put some legend on it. But the is almost all of the documentation i've read so far is only for d3.js version 3 and a lot has changed for v5. Some says that there is already a built in legend maker of d3 which i don't understand how to use it. Please help.
以下是我的饼图代码段:
Below is my code snippet of the pie chart:
/** START OF PIE CHART */
var data = [{"region_iso_code":"PH-00","total_up_percentage":97.69},{"region_iso_code":"PH-01","total_up_percentage":99.83},{"region_iso_code":"PH-02","total_up_percentage":97.96},{"region_iso_code":"PH-03","total_up_percentage":99.29},{"region_iso_code":"PH-04","total_up_percentage":98.36},{"region_iso_code":"PH-05","total_up_percentage":98.02},{"region_iso_code":"PH-06","total_up_percentage":96.91},{"region_iso_code":"PH-07","total_up_percentage":99.75},{"region_iso_code":"PH-LAG","total_up_percentage":98.84}]
var svgCirWidth = 600, svgCirHeight = 300, radius = Math.min(svgCirWidth, svgCirHeight) / 2;
const pieContainer = d3.select("#pieChart")
.append("svg")
.attr("width", svgCirWidth)
.attr("height", svgCirHeight);
//create group element to hold pie chart
var g = pieContainer.append("g")
.attr("transform", "translate(" + 250 + "," + radius + ")");
var color = d3.scaleOrdinal()
.range(["#98abc5", "#8a89a6", "#7b6888", "#6b486b", "#a05d56", "#d0743c", "#ff8c00"])
var pie = d3.pie().value(function (d) {
return d.total_up_percentage;
});
var path = d3.arc()
.outerRadius(radius)
.innerRadius(0);
var arc = g.selectAll("arc")
.data(pie(data))
.enter() //means keeps looping in the data
.append("g");
arc.append("path")
.attr("d", path)
.attr("fill", function (d) {
return color(d.data.total_up_percentage);
})
.append("text")
.text("afdaf");
var label = d3.arc()
.outerRadius(radius)
.innerRadius(0);
arc.append("text")
.attr("transform", (d) => {
return "translate(" + label.centroid(d) + ")";
})
.attr("text-anchor", "middle")
.text((d) => {
return d.data.total_up_percentage + "%"
});
/* END OF PIE CHART */
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>DASHBOARD</title>
<!--Lib css-->
<!--bootstrap-->
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css"
integrity="sha384-Vkoo8x4CGsO3+Hhxv8T/Q5PaXtkKtu6ug5TOeNV6gBiFeWPGFN9MuhOf23Q9Ifjh" crossorigin="anonymous">
<!--fontawesome-->
<link href="https://stackpath.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css" rel="stylesheet"
integrity="sha384-wvfXpqpZZVQGK6TAh5PVlGOfQNHSoD2xbE+QkPxCAFlNEevoEH3Sl0sibVcOQVnN" crossorigin="anonymous">
<!--jquery-->
<script src="https://code.jquery.com/jquery-3.5.0.js"
integrity="sha256-r/AaFHrszJtwpe+tHyNi/XCfMxYpbsRg2Uqn0x3s2zc=" crossorigin="anonymous"></script>
<!--own css-->
<style>
@import "https://fonts.googleapis.com/css?family=Poppins:300,400,500,600,700";
body {
font-family: 'Poppins', sans-serif;
background: #fafafa;
}
p {
font-family: 'Poppins', sans-serif;
font-size: 1.1em;
font-weight: 300;
line-height: 1.7em;
color: #999;
}
a,
a:hover,
a:focus {
color: inherit;
text-decoration: none;
transition: all 0.3s;
}
.navbar {
padding: 15px 10px;
background: #fff;
border: none;
border-radius: 0;
margin-bottom: 40px;
box-shadow: 1px 1px 3px rgba(0, 0, 0, 0.1);
}
.navbar-btn {
box-shadow: none;
outline: none !important;
border: none;
}
/* ---------------------------------------------------
SIDEBAR STYLE
----------------------------------------------------- */
.wrapper {
display: flex;
width: 100%;
align-items: stretch;
}
#sidebar {
min-width: 250px;
max-width: 250px;
background: rgb(60, 95, 238);
color: #fff;
transition: all 0.3s;
}
#sidebar.active {
margin-left: -250px;
}
#sidebar .sidebar-header {
padding: 20px;
background: rgb(90, 121, 243);
}
#sidebar ul.components {
padding: 20px 0;
border-bottom: 1px solid #47748b;
}
#sidebar ul p {
color: #fff;
padding: 10px;
}
#sidebar ul li a {
padding: 10px;
font-size: 1.1em;
display: block;
}
#sidebar ul li a:hover {
color: #7386D5;
background: #fff;
}
#sidebar ul li.active>a,
a[aria-expanded="true"] {
color: #fff;
background: #6d7fcc;
}
a[data-toggle="collapse"] {
position: relative;
}
.dropdown-toggle::after {
display: block;
position: absolute;
top: 50%;
right: 20px;
transform: translateY(-50%);
}
ul ul a {
font-size: 0.9em !important;
padding-left: 30px !important;
background: #6d7fcc;
}
ul.CTAs {
padding: 20px;
}
ul.CTAs a {
text-align: center;
font-size: 0.9em !important;
display: block;
border-radius: 5px;
margin-bottom: 5px;
}
a.download {
background: #fff;
color: #7386D5;
}
a.article,
a.article:hover {
background: #6d7fcc !important;
color: #fff !important;
}
/* ---------------------------------------------------
CONTENT STYLE
----------------------------------------------------- */
#content {
width: 100%;
padding: 20px;
min-height: 100vh;
transition: all 0.3s;
}
/* ---------------------------------------------------
MEDIAQUERIES
----------------------------------------------------- */
@media (max-width: 768px) {
#sidebar {
margin-left: -250px;
}
#sidebar.active {
margin-left: 0;
}
#sidebarCollapse span {
display: none;
}
}
/* ---------------------------------------------------
CHART STYLE
-----------------------------------------------------
/* LINE CHART STYLE */
.axis--x path {
display: none;
}
.line {
fill: none;
stroke: steelblue;
stroke-width: 1.5px;
}
</style>
<!--lib js-->
<!--bootstrap-->
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/js/bootstrap.min.js"
integrity="sha384-wfSDF2E50Y2D1uUdj0O3uMBJnjuUD4Ih7YwaYd1iqfktj0Uod8GCExl3Og8ifwB6"
crossorigin="anonymous"></script>
<!--fontawesome js-->
<script src="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.13.0/js/all.min.js"></script>
<!--d3(chart) js-->
<script src="https://d3js.org/d3.v5.min.js"></script>
</head>
<body>
<div class="wrapper">
<!-- Sidebar -->
<nav id="sidebar">
<ul class="list-unstyled components">
<li class="active">
<a href="/">DASHBOARD</a>
</li>
</ul>
<!--End of nav.sidebar-->
</nav>
<!--Page content-->
<div id="content">
<!-- navbar -->
<nav class="navbar navbar-expand-lg navbar-light bg-light">
<div class="container-fluid">
<button type="button" id="sidebarCollapse" class="btn btn-info">
<i class="fas fa-align-justify"></i>
</button>
</div>
</nav>
<!--End of div.row-->
<div class="row">
<div class="col-12">
<div class="card shadow mb-5">
<div class="card-body">
<div id="pieChart">
</div>
</div>
</div>
</div>
</div>
<!--End of div.row-->
</div>
</div>
</div>
<!--End of div.wrapper-->
<script src="js/script.js"></script>
</body>
</html>
推荐答案
只是一个草稿版本，可以回答您的问题，请根据您的要求进行更改和调整值.
Just a draft version to answer your question, please make changes and tweak values as per your requirements.
/** START OF PIE CHART */
var data = [{"region_iso_code":"PH-00","total_up_percentage":97.69},{"region_iso_code":"PH-01","total_up_percentage":99.83},{"region_iso_code":"PH-02","total_up_percentage":97.96},{"region_iso_code":"PH-03","total_up_percentage":99.29},{"region_iso_code":"PH-04","total_up_percentage":98.36},{"region_iso_code":"PH-05","total_up_percentage":98.02},{"region_iso_code":"PH-06","total_up_percentage":96.91},{"region_iso_code":"PH-07","total_up_percentage":99.75},{"region_iso_code":"PH-LAG","total_up_percentage":98.84}]
var svgCirWidth = 600, svgCirHeight = 300, radius = Math.min(svgCirWidth, svgCirHeight) / 2;
const pieContainer = d3.select("#pieChart")
.append("svg")
.attr("width", svgCirWidth)
.attr("height", svgCirHeight);
//create group element to hold pie chart
var g = pieContainer.append("g")
.attr("transform", "translate(" + 250 + "," + radius + ")");
var color = d3.scaleOrdinal()
.range(["#98abc5", "#8a89a6", "#7b6888", "#6b486b", "#a05d56", "#d0743c", "#ff8c00"])
var pie = d3.pie().value(function (d) {
return d.total_up_percentage;
});
var path = d3.arc()
.outerRadius(radius)
.innerRadius(0);
var arc = g.selectAll("arc")
.data(pie(data))
.enter() //means keeps looping in the data
.append("g");
arc.append("path")
.attr("d", path)
.attr("fill", function (d) {
return color(d.data.total_up_percentage);
})
.append("text")
.text("afdaf");
var label = d3.arc()
.outerRadius(radius)
.innerRadius(0);
arc.append("text")
.attr("transform", (d) => {
return "translate(" + label.centroid(d) + ")";
})
.attr("text-anchor", "middle")
.text((d) => {
return d.data.total_up_percentage + "%"
});
//console.log(pie(data))
var legendG = g.selectAll(".legend")
.data(pie(data))
.enter()
.append("g")
.attr("transform", function(d,i){
return "translate(" + (-250) + "," + (i * 15 + 20) + ")";
})
.attr("class", "legend");
legendG.append("rect")
.attr("width", 10)
.attr("height", 10)
.attr("fill", function(d) {
return color(d.value);
});
legendG.append("text")
.text(function(d){
return d.data.region_iso_code;
})
.style("font-size", 12)
.attr("y", 10)
.attr("x", 11);
/* END OF PIE CHART */
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>DASHBOARD</title>
<!--Lib css-->
<!--bootstrap-->
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css"
integrity="sha384-Vkoo8x4CGsO3+Hhxv8T/Q5PaXtkKtu6ug5TOeNV6gBiFeWPGFN9MuhOf23Q9Ifjh" crossorigin="anonymous">
<!--fontawesome-->
<link href="https://stackpath.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css" rel="stylesheet"
integrity="sha384-wvfXpqpZZVQGK6TAh5PVlGOfQNHSoD2xbE+QkPxCAFlNEevoEH3Sl0sibVcOQVnN" crossorigin="anonymous">
<!--jquery-->
<script src="https://code.jquery.com/jquery-3.5.0.js"
integrity="sha256-r/AaFHrszJtwpe+tHyNi/XCfMxYpbsRg2Uqn0x3s2zc=" crossorigin="anonymous"></script>
<!--own css-->
<style>
@import "https://fonts.googleapis.com/css?family=Poppins:300,400,500,600,700";
body {
font-family: 'Poppins', sans-serif;
background: #fafafa;
}
p {
font-family: 'Poppins', sans-serif;
font-size: 1.1em;
font-weight: 300;
line-height: 1.7em;
color: #999;
}
a,
a:hover,
a:focus {
color: inherit;
text-decoration: none;
transition: all 0.3s;
}
.navbar {
padding: 15px 10px;
background: #fff;
border: none;
border-radius: 0;
margin-bottom: 40px;
box-shadow: 1px 1px 3px rgba(0, 0, 0, 0.1);
}
.navbar-btn {
box-shadow: none;
outline: none !important;
border: none;
}
/* ---------------------------------------------------
SIDEBAR STYLE
----------------------------------------------------- */
.wrapper {
display: flex;
width: 100%;
align-items: stretch;
}
#sidebar {
min-width: 250px;
max-width: 250px;
background: rgb(60, 95, 238);
color: #fff;
transition: all 0.3s;
}
#sidebar.active {
margin-left: -250px;
}
#sidebar .sidebar-header {
padding: 20px;
background: rgb(90, 121, 243);
}
#sidebar ul.components {
padding: 20px 0;
border-bottom: 1px solid #47748b;
}
#sidebar ul p {
color: #fff;
padding: 10px;
}
#sidebar ul li a {
padding: 10px;
font-size: 1.1em;
display: block;
}
#sidebar ul li a:hover {
color: #7386D5;
background: #fff;
}
#sidebar ul li.active>a,
a[aria-expanded="true"] {
color: #fff;
background: #6d7fcc;
}
a[data-toggle="collapse"] {
position: relative;
}
.dropdown-toggle::after {
display: block;
position: absolute;
top: 50%;
right: 20px;
transform: translateY(-50%);
}
ul ul a {
font-size: 0.9em !important;
padding-left: 30px !important;
background: #6d7fcc;
}
ul.CTAs {
padding: 20px;
}
ul.CTAs a {
text-align: center;
font-size: 0.9em !important;
display: block;
border-radius: 5px;
margin-bottom: 5px;
}
a.download {
background: #fff;
color: #7386D5;
}
a.article,
a.article:hover {
background: #6d7fcc !important;
color: #fff !important;
}
/* ---------------------------------------------------
CONTENT STYLE
----------------------------------------------------- */
#content {
width: 100%;
padding: 20px;
min-height: 100vh;
transition: all 0.3s;
}
/* ---------------------------------------------------
MEDIAQUERIES
----------------------------------------------------- */
@media (max-width: 768px) {
#sidebar {
margin-left: -250px;
}
#sidebar.active {
margin-left: 0;
}
#sidebarCollapse span {
display: none;
}
}
/* ---------------------------------------------------
CHART STYLE
-----------------------------------------------------
/* LINE CHART STYLE */
.axis--x path {
display: none;
}
.line {
fill: none;
stroke: steelblue;
stroke-width: 1.5px;
}
</style>
<!--lib js-->
<!--bootstrap-->
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/js/bootstrap.min.js"
integrity="sha384-wfSDF2E50Y2D1uUdj0O3uMBJnjuUD4Ih7YwaYd1iqfktj0Uod8GCExl3Og8ifwB6"
crossorigin="anonymous"></script>
<!--fontawesome js-->
<script src="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.13.0/js/all.min.js"></script>
<!--d3(chart) js-->
<script src="https://d3js.org/d3.v5.min.js"></script>
</head>
<body>
<div class="wrapper">
<!-- Sidebar -->
<nav id="sidebar">
<ul class="list-unstyled components">
<li class="active">
<a href="/">DASHBOARD</a>
</li>
</ul>
<!--End of nav.sidebar-->
</nav>
<!--Page content-->
<div id="content">
<!-- navbar -->
<nav class="navbar navbar-expand-lg navbar-light bg-light">
<div class="container-fluid">
<button type="button" id="sidebarCollapse" class="btn btn-info">
<i class="fas fa-align-justify"></i>
</button>
</div>
</nav>
<!--End of div.row-->
<div class="row">
<div class="col-12">
<div class="card shadow mb-5">
<div class="card-body">
<div id="pieChart">
</div>
</div>
</div>
</div>
</div>
<!--End of div.row-->
</div>
</div>
</div>
<!--End of div.wrapper-->
<script src="js/script.js"></script>
</body>
</html>
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