Created
March 7, 2016 00:53
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USF_VictorDu_Parallel_cooridnate
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<!DOCTYPE html> | |
<meta charset="utf-8"> | |
<style> | |
svg { | |
font: 10px sans-serif; | |
} | |
.background path { | |
fill: none; | |
stroke: #ddd; | |
shape-rendering: crispEdges; | |
} | |
.foreground path { | |
fill: none; | |
stroke: #4cb489; | |
} | |
.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 outerWidth = 1024; | |
var outerHeight = 798; | |
var margin = {top: 30, right: 10, bottom: 10, left: 10}; | |
var innerWidth = outerWidth - margin.left - margin.right; | |
var innerHeight = outerHeight - margin.top - margin.bottom; | |
var x = d3.scale.ordinal().rangePoints([0, innerWidth], 1), | |
y = {}; | |
var line = d3.svg.line(), | |
axis = d3.svg.axis().orient("left"), | |
background, | |
foreground; | |
var svg = d3.select("body").append("svg") | |
.attr("width", outerWidth) | |
.attr("height", outerHeight); | |
var g = svg.append("g") | |
.attr("transform", "translate(" + margin.left + "," + margin.top + ")"); | |
d3.csv("https://gist.githubusercontent.com/VictorDu/fbd642275a936c99c90c/raw/412276f252fa93b23cd5c6d2f68e8fbb66fe2112/cadata.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 != "number" && (y[d] = d3.scale.linear() | |
.domain(d3.extent(data, function(p) { return +p[d]; })) | |
.range([innerHeight, 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 green foreground lines for focus. | |
foreground = svg.append("g") | |
.attr("class", "foreground") | |
.selectAll("path") | |
.data(data) | |
.enter().append("path") | |
.attr("d", path); | |
// 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); | |
}); | |
// 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> |
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