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19_bar_sort2.html
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19_bar_sort2.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>D3: Ascending and descending sorts</title>
<script type="text/javascript" src="d3.js"></script>
<style type="text/css">
body {
background-color: gray;
}
/* New rules for styling buttons */
#buttonContainer {
margin-bottom: 10px;
}
button {
padding: 15px;
}
svg {
background-color: white;
}
g.bar text {
font-family: sans-serif;
font-size: 11px;
fill: white;
font-style: bold;
text-anchor: middle;
opacity: 0;
}
g.bar.highlight text {
opacity: 1;
}
g.bar.highlight rect {
fill: Maroon;
}
.axis path,
.axis line {
fill: none;
stroke: black;
shape-rendering: crispEdges;
}
.axis text {
font-family: sans-serif;
font-size: 11px;
}
</style>
</head>
<body>
<!-- New buttons to trigger sorting! -->
<div id="buttonContainer">
<button id="sortAscending">Sort Ascending</button>
<button id="sortDescending">Sort Descending</button>
</div>
<script type="text/javascript">
//Width, height, padding
var w = 600;
var h = 250;
var padding = 25;
//Array of dummy data values
var dataset = [ 5, 10, 13, 19, 21, 25, 22, 18, 15, 13,
11, 12, 15, 20, 18, 17, 16, 18, 23, 25 ];
//Configure x and y scale functions
var xScale = d3.scale.ordinal()
.domain(d3.range(dataset.length))
.rangeRoundBands([ padding, w - padding ], 0.05);
var yScale = d3.scale.linear()
.domain([ 0, d3.max(dataset) ])
.rangeRound([ h - padding, padding ]);
//Configure y axis generator
var yAxis = d3.svg.axis()
.scale(yScale)
.orient("left")
.ticks(5);
//Create SVG element
var svg = d3.select("body")
.append("svg")
.attr("width", w)
.attr("height", h);
//Create groups
var groups = svg.selectAll("g")
.data(dataset)
.enter()
.append("g")
.attr("class", "bar")
.attr("transform", function(d, i) {
return "translate(" + xScale(i) + ",0)";
})
.on("mouseover", function() {
d3.select(this)
.classed("highlight", true);
})
.on("mouseout", function() {
d3.select(this)
.classed("highlight", false);
});
//Add bar to each group
var rects = groups.append("rect")
.attr("x", 0)
.attr("y", function(d) {
return h - padding;
})
.attr("width", xScale.rangeBand())
.attr("height", 0)
.attr("fill", "SteelBlue");
//Add label to each group
groups.append("text")
.attr("x", xScale.rangeBand() / 2)
.attr("y", function(d) {
return yScale(d) + 14;
})
.text(function(d) {
return d;
})
//Transition rects into place
rects.transition()
.delay(function(d, i) {
return i * 100;
})
.duration(1500)
.attr("y", function(d) {
return yScale(d);
})
.attr("height", function(d) {
return h - padding - yScale(d);
})
.filter(function(d) {
if (d > 20) {
return true;
}
return false;
})
.attr("fill", "DarkOrange");
//Create y axis
svg.append("g")
.attr("class", "axis")
.attr("transform", "translate(" + padding + ",0)")
.attr("opacity", 0)
.call(yAxis)
.transition()
.delay(2000)
.duration(1500)
.attr("opacity", 1.0);
//Sorting logic
d3.select("#sortAscending")
.on("click", function() {
groups.sort(function(a, b) {
return d3.ascending(a, b);
})
.transition()
.delay(function(d, i) {
return i * 50;
})
.duration(1000)
.attr("transform", function(d, i) {
return "translate(" + xScale(i) + ",0)";
});
});
//This is EXACTLY the same as above, except for:
d3.select("#sortDescending") //DEscending
.on("click", function() {
groups.sort(function(a, b) {
return d3.descending(a, b); //DEscending
})
.transition()
.delay(function(d, i) {
return i * 50;
})
.duration(1000)
.attr("transform", function(d, i) {
return "translate(" + xScale(i) + ",0)";
});
});
</script>
</body>
</html>