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@dymzd

dymzd/.block

Created April 25, 2018 11:10
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Streamgraph
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.block
license: mit
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README.md
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index.html
<!DOCTYPE html>
<head>
<meta charset="utf-8">
<script src="https://d3js.org/d3.v4.min.js"></script>
<style>
body { margin:0;position:fixed;top:0;right:0;bottom:0;left:0; }
h1,h2,p {
margin:0px;
}
svg {
margin-top:-40px;
}
</style>
<h1>MQP Majors over time 1990-2015</h1>
<h2 id="major">Mouse over</h2>
<p>The trend of WPI Major Qualifying Projects, grouped by major over time. The peak in the beginning shows the eCDR submission requirement creation.</p>
</head>
<body>
<script>
var parseYear = d3.timeParse("%Y-%m");
d3.csv('trends.csv', function(err, d){
if(err) console.log(err);
//console.log(d)
d.date = parseYear(d.date);
var nested_data = d3.nest()
.key(function(d) { return d.date; })
.entries(d);
//console.log(nested_data);
var mqpdata = nested_data.map(function(d){
var obj = {
month: new Date(d.key, 0, 1)
}
d.values.forEach(function(v){
obj[v.key] = +v.value;
})
return obj;
})
buildStreamGraph(mqpdata);
})
function buildStreamGraph(mqpdata) {
var data = mqpdata;
var stack = d3.stack()
.keys(["AE", "AREN", "BBT", "BC", "BME", "CE", "CH", "CM", "CS", "ECE", "EV", "HU", "ID", "IE", "IMGD", "MA", "ME", "MG", "PH", "RBE", "SSPS"])
.order(d3.stackOrderNone)
.offset(d3.stackOffsetWiggle);
var series = stack(data);
var width = 800,
height = 500;
var x = d3.scaleTime()
.domain(d3.extent(data, function(d){ return d.month; }))
.range([100, width]);
// setup axis
var xAxis = d3.axisBottom(x);
var y = d3.scaleLinear()
.domain([0, d3.max(series, function(layer) { return d3.max(layer, function(d){ return d[0] + d[1];}); })])
.range([height/2, -200]);
var color = d3.scaleLinear()
.range(["#51D0D7", "#31B5BB"]);
var color = d3.scaleOrdinal(d3.schemeCategory20);
var area = d3.area()
.x(function(d) { console.info('in area function', d); return x(d.data.month); })
.y0(function(d) { return y(d[0]); })
.y1(function(d) { return y(d[1]); })
.curve(d3.curveBasis);
var svg = d3.select("body").append("svg")
.attr("width", width)
.attr("height", height);
svg.selectAll("path")
.data(series)
.enter().append("path")
.attr("d", area)
.style("fill", function() { return color(Math.random()); })
.on('mouseover', function(d){
d3.select(this).style('fill',d3.rgb( d3.select(this).style("fill") ).brighter());
d3.select("#major").text(d.key);
})
.on('mouseout', function(d){
d3.select(this).style('fill',
d3.rgb( d3.select(this).style("fill") ).darker());
d3.select("#major").text("Mouse over");
})
svg.append("g")
.attr("class", "axis axis--x")
.attr("transform", "translate(0," + (height) + ")")
.call(xAxis);
}
</script>
</body>
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