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February 16, 2016 19:34
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Tooltip Pie Chart
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<!DOCTYPE html> | |
<html> | |
<head> | |
<meta charset="utf-8" /> | |
<title>D3.js Step by Step: Step 5 - Adding Tooltips</title> | |
<link href="//cdnjs.cloudflare.com/ajax/libs/normalize/3.0.1/normalize.min.css" rel="stylesheet" data-semver="3.0.1" data-require="normalize@*" /> | |
<style> | |
#chart { /* NEW */ | |
height: 360px; /* NEW */ | |
position: relative; /* NEW */ | |
width: 360px; /* NEW */ | |
} /* NEW */ | |
.tooltip { /* NEW */ | |
background: #eee; /* NEW */ | |
box-shadow: 0 0 5px #999999; /* NEW */ | |
color: #333; /* NEW */ | |
display: none; /* NEW */ | |
font-size: 12px; /* NEW */ | |
left: 130px; /* NEW */ | |
padding: 10px; /* NEW */ | |
position: absolute; /* NEW */ | |
text-align: center; /* NEW */ | |
top: 95px; /* NEW */ | |
width: 80px; /* NEW */ | |
z-index: 10; /* NEW */ | |
} /* NEW */ | |
.legend { | |
font-size: 12px; | |
} | |
rect { | |
stroke-width: 2; | |
} | |
</style> | |
</head> | |
<body> | |
<div id="chart"></div> | |
<script data-require="d3@*" data-semver="3.4.6" src="//cdnjs.cloudflare.com/ajax/libs/d3/3.4.6/d3.min.js"></script> | |
<script> | |
(function(d3) { | |
'use strict'; | |
var width = 360; | |
var height = 360; | |
var radius = Math.min(width, height) / 2; | |
var donutWidth = 75; | |
var legendRectSize = 18; | |
var legendSpacing = 4; | |
var color = d3.scale.category20b(); | |
var svg = d3.select('#chart') | |
.append('svg') | |
.attr('width', width) | |
.attr('height', height) | |
.append('g') | |
.attr('transform', 'translate(' + (width / 2) + | |
',' + (height / 2) + ')'); | |
var arc = d3.svg.arc() | |
.innerRadius(radius - donutWidth) | |
.outerRadius(radius); | |
var pie = d3.layout.pie() | |
.value(function(d) { return d.count; }) | |
.sort(null); | |
var tooltip = d3.select('#chart') // NEW | |
.append('div') // NEW | |
.attr('class', 'tooltip'); // NEW | |
tooltip.append('div') // NEW | |
.attr('class', 'label'); // NEW | |
tooltip.append('div') // NEW | |
.attr('class', 'count'); // NEW | |
tooltip.append('div') // NEW | |
.attr('class', 'percent'); // NEW | |
d3.csv('weekdays.csv', function(error, dataset) { | |
dataset.forEach(function(d) { | |
d.count = +d.count; | |
}); | |
var path = svg.selectAll('path') | |
.data(pie(dataset)) | |
.enter() | |
.append('path') | |
.attr('d', arc) | |
.attr('fill', function(d, i) { | |
return color(d.data.label); | |
}); | |
path.on('mouseover', function(d) { // NEW | |
var total = d3.sum(dataset.map(function(d) { // NEW | |
return d.count; // NEW | |
})); // NEW | |
var percent = Math.round(1000 * d.data.count / total) / 10; // NEW | |
tooltip.select('.label').html(d.data.label); // NEW | |
tooltip.select('.count').html(d.data.count); // NEW | |
tooltip.select('.percent').html(percent + '%'); // NEW | |
tooltip.style('display', 'block'); // NEW | |
}); // NEW | |
path.on('mouseout', function() { // NEW | |
tooltip.style('display', 'none'); // NEW | |
}); // NEW | |
/* OPTIONAL | |
path.on('mousemove', function(d) { // NEW | |
tooltip.style('top', (d3.event.pageY + 10) + 'px') // NEW | |
.style('left', (d3.event.pageX + 10) + 'px'); // NEW | |
}); // NEW | |
*/ | |
var legend = svg.selectAll('.legend') | |
.data(color.domain()) | |
.enter() | |
.append('g') | |
.attr('class', 'legend') | |
.attr('transform', function(d, i) { | |
var height = legendRectSize + legendSpacing; | |
var offset = height * color.domain().length / 2; | |
var horz = -2 * legendRectSize; | |
var vert = i * height - offset; | |
return 'translate(' + horz + ',' + vert + ')'; | |
}); | |
legend.append('rect') | |
.attr('width', legendRectSize) | |
.attr('height', legendRectSize) | |
.style('fill', color) | |
.style('stroke', color); | |
legend.append('text') | |
.attr('x', legendRectSize + legendSpacing) | |
.attr('y', legendRectSize - legendSpacing) | |
.text(function(d) { return d; }); | |
}); | |
})(window.d3); | |
</script> | |
</body> | |
</html> |
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
label | count | |
---|---|---|
AM | 739.43 | |
BA | 365.79 | |
CE | 235.34 | |
DF | 229.14 | |
ES | 159.08 | |
GO | 82.02 |
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