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index.html
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<!DOCTYPE html>
<meta charset="utf-8">
<title>MADD MAP</title>
<link rel="stylesheet" media="all" href="css/style.css"/>
<body>
<div id="content">
<div id="header">
<h2>Drivers involved in fatal crashes in <span id="year">2011</span></h2>
<h3>with a blood alcohol level (BAC) of 0.08% or higher</h3>
</div>
<div id="controls">
<button onclick="updateData(2011);">2011</button>
<button onclick="updateData(2010);">2010</button>
<button onclick="updateData(2009);">2009</button>
<button onclick="updateData(2008);">2008</button>
</div>
<div id="map">
<h4 class="loading">Loading...</h4>
</div>
<div id="legend" class="states">
<ul>
<li class="q0-4"> 0 - 16% </li>
<li class="q1-4"> 16 - 21% </li>
<li class="q2-4"> 21 - 27% </li>
<li class="q3-4"> 27%+ </li>
</ul>
</div>
</div>
</body>
<script src="http://d3js.org/d3.v3.min.js"></script>
<script src="http://d3js.org/queue.v1.min.js"></script>
<script src="http://d3js.org/topojson.v1.min.js"></script>
<script>
var margin = { top: 0, right: 0, bottom: 0, left: 0 },
width = 960 - margin.right - margin.left,
height = 500,
path = d3.geo.path(),
map,
items,
tooltip,
states;
var drunkColumns = ['BAC_08plus_2011', 'BAC_08plus_2010', 'BAC_08plus_2009', 'BAC_08plus_2008'],
drinkingColumns = ['BAC_01plus_2011', 'BAC_01plus_2010', 'BAC_01plus_2009', 'BAC_01plus_2008'],
totalColumns = ['TOTAL_2011', 'TOTAL_2010', 'TOTAL_2009', 'TOTAL_2008'],
currentYear = '2011';
// Set mapOffset used for positioning tooltip
var mapOffset = {
left: 20, //20,
top: 0 //30
};
var quantize = d3.scale.threshold()
.domain([.16, .21, .27])
.range(d3.range(4).map(function(i) { return "q" + i + "-4"; }));
var color = d3.scale.threshold()
.domain([.16, .21, .27])
.range(['#fef0d9', '#fdcc8a','#fc8d59', '#d7301f']);
var q = queue()
.defer(d3.json, "data/us.json")
.defer(d3.csv,"data/us-states-drunkdrivers.csv")
.await(ready);
function ready(error, us, drivers) {
window.error = error;
if (error) throw error;
d3.select('.loading').remove();
tooltip = d3.select("#map").append("div")
.attr("class", "tooltip hidden");
map = d3.select('#map').append('svg')
.attr('width', width)
.attr('height', height);
/* Format data - make one giant object with all the data we need */
items = formattedData(drivers);
states = map.append('g')
.attr('class', 'states')
.selectAll('path')
.data(topojson.feature(us, us.objects.states).features)
.enter().append('path')
.attr("fill", getFill)
.attr('d', path);
//show tooltips
states.on("mouseover", showTooltip)
.on("mousemove", showTooltip)
.on("mouseout", function(d,i) {
tooltip.classed("hidden", true)
});
};
/* ****************************** */
function getClassName(d) {
if (items[d.id] == null) {
return 'undefined';
}
var colNumber;
drunkColumns.forEach(function(col, k) {
if(col.slice(-4) == currentYear) {
colNumber = k;
}
});
return quantize(items[d.id].drunkNums[colNumber] / items[d.id].totalNums[colNumber]) + " ";
}
function getFill(d) {
if (items[d.id] == null) {
return 'undefined';
}
var colNumber;
drunkColumns.forEach(function(col, k) {
if(col.slice(-4) == currentYear) {
colNumber = k;
}
});
return color(items[d.id].drunkNums[colNumber] / items[d.id].totalNums[colNumber]);
}
function showTooltip(d,i){
var mouse = d3.mouse(map.node()).map( function(d) { return parseInt(d); } );
var name = items[d.id].name;
var text = '';
var colNumber;
drunkColumns.forEach(function(col, k) {
if(col.slice(-4) == currentYear) {
colNumber = k;
}
});
var percentDrunk = roundTenth((items[d.id].drunkNums[colNumber] / items[d.id].totalNums[colNumber]) * 100);
var percentDrinking = roundTenth((items[d.id].drinkingNums[colNumber] / items[d.id].totalNums[colNumber]) * 100);
if(isNaN(percentDrunk)){
text += '<i>Percent drivers with BAC of 0.08+ unknown</i>';
}else{
text += '<span class="highlight">' + percentDrunk + '%</span> of drivers involved in fatal crashes had a BAC of 0.08+';
}
text += '<br />';
if(isNaN(percentDrinking)){
text += '<i>Percent drivers drinking unknown</i>';
}else{
text += '<span class="highlight">' + percentDrinking + '%</span> of drivers involved in fatal crashes were drinking';
}
/* NEXT STEP: Build Chart showing history over the past several years */
//text += '<p>(insert graph over time here)</p>';
tooltip
.classed("hidden", false)
.attr("style", "left:"+(mouse[0]+mapOffset.left) + "px;top:" + (mouse[1]+mapOffset.top) + "px")
.html('<div class="tooltip_title ' + getClassName(d) + '">' + name + ', ' + currentYear + '</div> ' + text)
}
function formattedData(drivers) {
var items = [];
drivers.forEach(function(d, i) {
var row = drivers[i],
id = row['ID'],
drunkNums = [],
drinkingNums = [],
totalNums = [];
drunkColumns.forEach(function(col, k) {
var datum = parseFloat(row[col]);
drunkNums.push(datum);
});
drinkingColumns.forEach(function(col, k) {
var datum = parseFloat(row[col]);
drinkingNums.push(datum);
});
totalColumns.forEach(function(col, k) {
var datum = parseFloat(row[col]);
totalNums.push(datum);
});
var item = {
name: row['State'],
drunkNums: drunkNums,
drinkingNums: drinkingNums,
totalNums: totalNums
}
items[id] = item;
});
return items;
}
function updateData(year) {
currentYear = year;
var title = d3.select('#year').html(currentYear);
states
.transition()
.duration(750)
//.delay(function(d, i) { return i * 2; })
.attr("fill", getFill);
}
/* ****************************** */
function roundHalf(num) {
num = Math.round(num*2)/2;
return num;
}
function roundTenth(num) {
num = Math.round(num*10)/10;
return num;
}
</script>