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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/4.2.2/d3.min.js"></script>
<style>
* {
margin: 0;
padding: 0; }
.main {
height: 100vh;
width: 100vw;
display: flex;
align-items: center;
justify-content: center;
font-family: "Roboto";
background-color: #708090;
background-size: 64px 128px; }
.main .container {
height: 560px;
width: 900px;
background-color: #fff;
display: flex;
flex-direction: column;
padding: 20px 20px 20px 20px;
align-self: center;
position: relative; }
@media (min-width: 1000px) {
.main .container {
box-shadow: 2px 2px 20px; } }
.main .container #title {
text-align: center;
font-size: 2.5em; }
.main .container .visHolder {
position: absolute;
top: 6em; }
#tooltip {
display: flex;
align-items: center;
justify-content: center;
position: absolute;
text-align: center;
width: 150px;
height: 50px;
padding: 2px;
font: 12px;
background: lightsteelblue;
box-shadow: 1px 1px 10px;
border-radius: 2px;
pointer-events: none; }
.overlay {
position: absolute;
background: #fff;
pointer-events: none; }
#y-axis path {
stroke: black;
stroke-width: 1;
fill: none; }
#x-axis path {
stroke: black;
stroke-width: 1;
fill: none; }
.info {
font-size: 0.8em; }
</style>
</head>
<body>
<div class="main">
<div class="container">
<div id="title">United States GDP</div>
<div class='visHolder'></div>
</div>
</div>
<script>
var yMargin = 40,
width = 800,
height = 400,
barWidth = width/275;
var tooltip = d3.select(".visHolder")
.append("div")
.attr("id","tooltip")
.style("opacity",0)
var overlay = d3.select(".visHolder")
.append("div")
.attr("class","overlay")
.style("opacity",0)
var svgContainer = d3.select(".visHolder")
.append("svg")
.attr("width", width + 100)
.attr("height",height + 60)
d3.json('https://raw.githubusercontent.com/FreeCodeCamp/ProjectReferenceData/master/GDP-data.json',function(err,data){
svgContainer.append('text')
.attr('transform', 'rotate(-90)')
.attr("x",-200)
.attr("y",80)
.text('Gross Domestic Product');
svgContainer.append('text')
.attr('x', width/2 + 120)
.attr('y', height + 50)
.text('More Information: http://www.bea.gov/national/pdf/nipaguid.pdf')
.attr('class', 'info');
var year = data.data.map(item => {
var quarter;
var temp = item[0].substring(5, 7);
if(temp === '01') {
quarter = 'Q1';
}
else if (temp === '04'){
quarter = 'Q2';
}
else if(temp === '07') {
quarter = 'Q3';
}
else if(temp ==='10') {
quarter = 'Q4';
}
return item[0].substring(0, 4) + ' ' + quarter
})
var yearsDate = data.data.map(item=> new Date(item[0]));
var xMax = d3.max(yearsDate);
xMax.setMonth(xMax.getMonth() + 3);
var xScale = d3.scaleTime()
.domain([d3.min(yearsDate),xMax])
.range([0,width]);
var xAxis = d3.axisBottom()
.scale(xScale)
var xAxisGroup = svgContainer.append('g')
.call(xAxis)
.attr('id', 'x-axis')
.attr('transform', 'translate(60, 400)');
var GDP = data.data.map(item=>item[1]);
var scaledGDP = [];
var gdpMin = d3.min(GDP);
var gdpMax = d3.max(GDP);
var linearScale = d3.scaleLinear()
.domain([0, gdpMax])
.range([0, height]);
scaledGDP = GDP.map(item=>linearScale(item))
var yAxisScale = d3.scaleLinear()
.domain([0,gdpMax])
.range([height,0])
var yAxis = d3.axisLeft().scale(yAxisScale);
var yAxisGroup = svgContainer.append('g')
.call(yAxis)
.attr('id', 'y-axis')
.attr('transform', 'translate(60, 0)');
d3.select('svg').selectAll('rect')
.data(scaledGDP)
.enter()
.append('rect')
.attr('data-date',(d,i)=>data.data[i][0])
.attr('data-gdp',(d,i)=>data.data[i][1])
.attr('class', 'bar')
.attr('x',(d,i)=>xScale(yearsDate[i]))
.attr('y',(d,i)=>height-d)
.attr('width',barWidth)
.attr('height',d=>d)
.style('fill', '#33adff')
.attr('transform', 'translate(60, 0)')
.on('mouseover', function(d, i) {
overlay.transition()
.duration(0)
.style('height', d + 'px')
.style('width', barWidth + 'px')
.style('opacity', .9)
.style('left', (i * barWidth) + 0 + 'px')
.style('top', height - d + 'px')
.style('transform', 'translateX(60px)');
tooltip.transition()
.duration(200)
.style('opacity', .9);
tooltip.html(years[i] + '<br>' + '$' + GDP[i].toFixed(1).replace(/(\d)(?=(\d{3})+\.)/g, '$1,') + ' Billion')
.attr('data-date', data.data[i][0])
.style('left', (i * barWidth) + 30 + 'px')
.style('top', height - 100 + 'px')
.style('transform', 'translateX(60px)');
})
.on('mouseout', function(d) {
tooltip.transition()
.duration(200)
.style('opacity', 0);
overlay.transition()
.duration(200)
.style('opacity', 0);
});
})
</script>
</body>
</html>