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3029b1f Jul 17, 2016
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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Step 6 - Animating Interactivity</title>
<link rel="stylesheet" href="normalize.css">
<style>
#chart {
height: 360px;
margin: 0 auto; /* NEW */
position: relative;
width: 360px;
}
.tooltip {
background: #eee;
box-shadow: 0 0 5px #999999;
color: #333;
display: none;
font-size: 12px;
left: 130px;
padding: 10px;
position: absolute;
text-align: center;
top: 95px;
width: 80px;
z-index: 10;
}
.legend {
font-size: 12px;
}
rect {
cursor: pointer; /* NEW */
stroke-width: 2;
}
rect.disabled { /* NEW */
fill: transparent !important; /* NEW */
} /* NEW */
h1 { /* NEW */
font-size: 14px; /* NEW */
text-align: center; /* NEW */
} /* NEW */
</style>
</head>
<body>
<h1>Toronto Parking Tickets by Weekday in 2012</h1> <!-- NEW -->
<div id="chart"></div>
<script src="d3.v4.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.scaleOrdinal(d3.schemeCategory20b);
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.arc()
.innerRadius(radius - donutWidth)
.outerRadius(radius);
var pie = d3.pie()
.value(function(d) { return d.count; })
.sort(null);
var tooltip = d3.select('#chart')
.append('div')
.attr('class', 'tooltip');
tooltip.append('div')
.attr('class', 'label');
tooltip.append('div')
.attr('class', 'count');
tooltip.append('div')
.attr('class', 'percent');
d3.csv('weekdays.csv', function(error, dataset) {
dataset.forEach(function(d) {
d.count = +d.count;
d.enabled = true; // NEW
});
var path = svg.selectAll('path')
.data(pie(dataset))
.enter()
.append('path')
.attr('d', arc)
.attr('fill', function(d, i) {
return color(d.data.label);
}) // UPDATED (removed semicolon)
.each(function(d) { this._current = d; }); // NEW
path.on('mouseover', function(d) {
var total = d3.sum(dataset.map(function(d) {
return (d.enabled) ? d.count : 0; // UPDATED
}));
var percent = Math.round(1000 * d.data.count / total) / 10;
tooltip.select('.label').html(d.data.label);
tooltip.select('.count').html(d.data.count);
tooltip.select('.percent').html(percent + '%');
tooltip.style('display', 'block');
});
path.on('mouseout', function() {
tooltip.style('display', 'none');
});
/* OPTIONAL
path.on('mousemove', function(d) {
tooltip.style('top', (d3.event.layerY + 10) + 'px')
.style('left', (d3.event.layerX + 10) + 'px');
});
*/
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) // UPDATED (removed semicolon)
.on('click', function(label) { // NEW
var rect = d3.select(this); // NEW
var enabled = true; // NEW
var totalEnabled = d3.sum(dataset.map(function(d) { // NEW
return (d.enabled) ? 1 : 0; // NEW
})); // NEW
if (rect.attr('class') === 'disabled') { // NEW
rect.attr('class', ''); // NEW
} else { // NEW
if (totalEnabled < 2) return; // NEW
rect.attr('class', 'disabled'); // NEW
enabled = false; // NEW
} // NEW
pie.value(function(d) { // NEW
if (d.label === label) d.enabled = enabled; // NEW
return (d.enabled) ? d.count : 0; // NEW
}); // NEW
path = path.data(pie(dataset)); // NEW
path.transition() // NEW
.duration(750) // NEW
.attrTween('d', function(d) { // NEW
var interpolate = d3.interpolate(this._current, d); // NEW
this._current = interpolate(0); // NEW
return function(t) { // NEW
return arc(interpolate(t)); // NEW
}; // NEW
}); // NEW
}); // NEW
legend.append('text')
.attr('x', legendRectSize + legendSpacing)
.attr('y', legendRectSize - legendSpacing)
.text(function(d) { return d; });
});
})(window.d3);
</script>
</body>
</html>