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Exercise 4 - Scales and axes
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>SIPRI arms transfers database</title>
<script type="text/javascript" src="http://d3js.org/d3.v3.js"></script>
<style type="text/css">
body {
background-color: white;
font-family: Helvetica, Arial, sans-serif;
}
h1 {
font-size: 24px;
margin: 0;
}
p {
font-size: 14px;
margin: 10px 0 0 0;
}
svg {
background-color: white;
}
rect:hover {
fill: orange;
}
.axis path,
.axis line {
fill: none;
stroke: black;
shape-rendering: crispEdges;
}
.axis text {
font-family: sans-serif;
font-size: 11px;
}
.y.axis path,
.y.axis line {
opacity: 0;
}
</style>
</head>
<body>
<h1>Arms Top Exporting Countries in 2014</h1>
<p>Figures are SIPRI Trend Indicator Values (TIVs) expressed in US$ m. at constant (1990) price. </p>
<p>Source: <a href="http://www.sipri.org/databases/yy_armstransfers/background">SIPRI Arms Transfers Database</a> <p>
<script type="text/javascript">
var w = 700;
var h = 600;
var padding = [ 20, 10, 30, 120 ]; //Top, right, bottom, left
var widthScale = d3.scale.linear()
.range([ 0, w - padding[1] - padding[3] ]);
var heightScale = d3.scale.ordinal()
.rangeRoundBands([ padding[0], h - padding[2] ], 0.1);
var xAxis = d3.svg.axis()
.scale(widthScale)
.orient("bottom");
var yAxis = d3.svg.axis()
.scale(heightScale)
.orient("left");
var svg = d3.select("body")
.append("svg")
.attr("width", w)
.attr("height", h);
d3.csv("SIPRI_Arms_Transfers_DB_2014_Top_25.csv", function(data) {
data.sort(function(a, b) {
return d3.descending(+a.TIV_VALUE_EXPORT, +b.TIV_VALUE_EXPORT);
});
widthScale.domain([ 0, d3.max(data, function(d) {
return +d.TIV_VALUE_EXPORT;
}) ]);
heightScale.domain(data.map(function(d) { return d.COUNTRY; } ));
var rects = svg.selectAll("rect")
.data(data)
.enter()
.append("rect");
rects.attr("x", padding[3])
.attr("y", function(d) {
return heightScale(d.COUNTRY);
})
.attr("width", function(d) {
return widthScale(d.TIV_VALUE_EXPORT);
})
.attr("height", heightScale.rangeBand())
.attr("fill", "steelblue")
.append("title")
.text(function(d) {
return d.COUNTRY + "'s TIV index is " + d.TIV_VALUE_EXPORT;
});
svg.append("g")
.attr("class", "x axis")
.attr("transform", "translate(" + padding[3] + "," + (h - padding[2]) + ")")
.call(xAxis);
svg.append("g")
.attr("class", "y axis")
.attr("transform", "translate(" + padding[3] + ",0)")
.call(yAxis);
});
</script>
</body>
</html>
COUNTRY TIV_VALUE_EXPORT TIV_VALUE_IMPORT YEAR
United States 10775 581 1/1/2014
Russia 6172 201 1/1/2014
India 4298 4243 1/1/2014
Saudi Arabia 2629 2629 1/1/2014
France 1978 20 1/1/2014
United Kingdom 1955 251 1/1/2014
Turkey 1824 1550 1/1/2014
Spain 1234 124 1/1/2014
Germany (FRG) 1200 120 1/1/2014
Indonesia 1200 1200 1/1/2014
China 1083 1357 1/1/2014
Viet Nam 1058 1058 1/1/2014
Taiwan (ROC) 1039 1039 1/1/2014
UAE 1033 1031 1/1/2014
Israel 1008 184 1/1/2014
Italy 937 151 1/1/2014
Oman 738 738 1/1/2014
Singapore 719 717 1/1/2014
South Korea 683 530 1/1/2014
Ukraine 664 0 1/1/2014
Pakistan 659 659 1/1/2014
Iraq 627 627 1/1/2014
Morocco 594 594 1/1/2014
Kuwait 591 591 1/1/2014
Netherlands 574 13 1/1/2014
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