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<meta charset="utf-8">
<style>
svg {
font: 10px sans-serif;
}
.background path {
fill: none;
stroke: #ddd;
shape-rendering: crispEdges;
}
.foreground path {
fill: none;
}
.brush .extent {
fill-opacity: .3;
stroke: #fff;
shape-rendering: crispEdges;
}
.axis line,
.axis path {
fill: none;
stroke: #000;
shape-rendering: crispEdges;
}
.axis text {
text-shadow: 0 1px 0 #fff, 1px 0 0 #fff, 0 -1px 0 #fff, -1px 0 0 #fff;
}
</style>
<body>
<script src="//d3js.org/d3.v3.min.js"></script>
<script>
var margin = {top: 30, right: 10, bottom: 10, left: 5},
width = 960 - margin.left - margin.right,
height = 500 - margin.top - margin.bottom;
var color_hash = {0 : ["Two-year schools", "#e02143"],
1 : ["Elite schools", "#b0b022"],
2 : ["For profit", "#69bf69"],
3 : ["Four-year public", "#69bfbf"],
4 : ["< two-year schools", "#0e0ebf"],
5 : ["four-year private","#bf69bf"]
};
var x = d3.scale.ordinal().rangePoints([0, width], 1),
y = {};
var line = d3.svg.line(),
axis = d3.svg.axis().orient("left"),
background,
foreground;
var svg = d3.select("body").append("svg")
.attr("width", width + margin.left + margin.right)
.attr("height", height + margin.top + margin.bottom)
.append("g")
.attr("transform", "translate(" + margin.left + "," + margin.top + ")");
d3.csv("mrc_table.csv", function(error, data) {
// Extract the list of dimensions and create a scale for each.
x.domain(dimensions = d3.keys(data[0]).filter(function(d) {
return d != "tier" && (y[d] = d3.scale.linear()
.domain(d3.extent(data, function(p) { return +p[d]; }))
.range([height, 0]));
}));
// Add grey background lines for context.
background = svg.append("g")
.attr("class", "background")
.selectAll("path")
.data(data)
.enter().append("path")
.attr("d", path);
// Add blue foreground lines for focus.
foreground = svg.append("g")
.attr("class", "foreground")
.selectAll("path")
.data(data)
.enter().append("path")
.attr("d", path).style("stroke",function(d) {if(d['tier'] === 'Two-year schools') {return "#e02143";} else if(d['tier'] === "Elite schools") {return "#b0b022";} else if(d['tier'] === "For profit") {return "#69bf69";} else if(d['tier'] === "Four-year public") {return "#69bfbf";} else if(d['tier'] === "< two-year schools") {return "#0e0ebf";} else {return "#bf69bf";}});
// Add a group element for each dimension.
var g = svg.selectAll(".dimension")
.data(dimensions)
.enter().append("g")
.attr("class", "dimension")
.attr("transform", function(d) { return "translate(" + x(d) + ")"; });
// Add an axis and title.
g.append("g")
.attr("class", "axis")
.each(function(d) { d3.select(this).call(axis.scale(y[d])); })
.append("text")
.style("text-anchor", "middle")
.attr("y", -9)
.text(function(d) { return d; });
// Add and store a brush for each axis.
g.append("g")
.attr("class", "brush")
.each(function(d) { d3.select(this).call(y[d].brush = d3.svg.brush().y(y[d]).on("brush", brush)); })
.selectAll("rect")
.attr("x", -8)
.attr("width", 16);
var legend = svg.append("g")
.attr("class", "legend")
.attr("x", width - 65)
.attr("y", 25)
.attr("height", 100)
.attr("width", 100);
legend.selectAll('g').data(data)
.enter()
.append('g')
.each(function(d, i) {
var g = d3.select(this);
g.append("rect")
.attr("x", width - 92)
.attr("y", i*25)
.attr("width", 10)
.attr("height", 10)
.attr("transform","translate(0,320)")
.style("fill", color_hash[String(i)][1]);
g.append("text")
.attr("x", width - 82)
.attr("y", i * 25 + 8)
.attr("height",30)
.attr("width",100)
.attr("transform","translate(0,320)")
.style("fill", color_hash[String(i)][1])
.text(color_hash[String(i)][0]);
});
});
// Returns the path for a given data point.
function path(d) {
return line(dimensions.map(function(p) { return [x(p), y[p](d[p])]; }));
}
// Handles a brush event, toggling the display of foreground lines.
function brush() {
var actives = dimensions.filter(function(p) { return !y[p].brush.empty(); }),
extents = actives.map(function(p) { return y[p].brush.extent(); });
foreground.style("display", function(d) {
return actives.every(function(p, i) {
return extents[i][0] <= d[p] && d[p] <= extents[i][1];
}) ? null : "none";
});
}
</script>
https://d3js.org/d3.v3.min.js