Created
February 19, 2013 01:52
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Alternative to stacked barchart in D3.js
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var margin = {top: 20, right: 50, bottom: 30, left: 40}, | |
width = 600 - margin.left - margin.right, | |
height = 500 - margin.top - margin.bottom; | |
var OffSet = 0.85; | |
var x = d3.scale.ordinal() | |
.rangeRoundBands([0, width], .1); | |
var y = d3.scale.linear() | |
.rangeRound([height, 0]); | |
var color = d3.scale.category20(); | |
var xAxis = d3.svg.axis() | |
.scale(x) | |
.orient("bottom"); | |
var yAxis = d3.svg.axis() | |
.scale(y) | |
.orient("left") | |
.tickFormat(d3.format(".2s")); | |
var svg = d3.select(".barplot").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("/data/stackbardemo.csv", function(error, data) { | |
color.domain(d3.keys(data[0]).filter(function(key) { return key !== "site"; })); | |
data.forEach(function(d, i) { | |
var y0 = 0; | |
d.abund = color.domain().map(function(name, j) { return {ab: d[name], name: name, y0: j, j: j, y1: j += +d[name]*OffSet}; }); | |
d.stop = d.abund[d.abund.length - 1].j; | |
d.total = d.abund[d.abund.length - 1].data; | |
}); | |
//y1.sort(function(a, b) { return b.total - a.total; }); | |
x.domain(data.map(function(d) { return d.site; })); | |
var YMax = d3.max(data, function(d) { return d.stop + 1; }); | |
y.domain([0, YMax]); | |
svg.append("g") | |
.attr("class", "x axis") | |
.attr("transform", "translate(0," + height + ")") | |
.call(xAxis); | |
data.forEach(function(d, i) { | |
if(i == 1){ | |
var y0 = 0; | |
d.temp = color.domain().map(function(name, k) { | |
var temp_y = d3.scale.linear() | |
.rangeRound([(k+1)*(height/YMax), (k)*(height/YMax)+(height/YMax)*(1-OffSet)]) | |
.domain([0, 1]); | |
var temp_yAxis = d3.svg.axis() | |
.scale(temp_y) | |
.orient("left") | |
.ticks(3) | |
.tickFormat(d3.format(".1s")); | |
svg.append("g") | |
.attr("class", "y axis") | |
.call(temp_yAxis); | |
return 0; | |
}); | |
}; | |
}); | |
var site = svg.selectAll(".state") | |
.data(data) | |
.enter().append("g") | |
.attr("class", "g") | |
.attr("transform", function(d) { return "translate(" + x(d.site) + ",0)"; }); | |
var rect = site.selectAll("rect") | |
.data(function(d) { return d.abund; }) | |
.enter().append("rect") | |
.attr("width", x.rangeBand()) | |
.attr("y", function(d) { return y(d.y1); }) | |
.attr("height", function(d) { return y(d.y0) - y(d.y1); }) | |
.style("fill", function(d) { return color(d.name); }); | |
rect.append("title").text(function(d) { return "Freq.: "+d.ab; }); | |
var legend = svg.selectAll(".legend") | |
.data(color.domain().slice().reverse()) | |
.enter().append("g") | |
.attr("class", "legend") | |
.attr("transform", function(d, i) { return "translate(0," + i * 20 + ")"; }); | |
legend.append("rect") | |
.attr("x", width) | |
.attr("width", 18) | |
.attr("height", 18) | |
.style("fill", color); | |
legend.append("text") | |
.attr("x", width + 50) | |
.attr("y", 9) | |
.attr("dy", ".35em") | |
.style("text-anchor", "end") | |
.text(function(d) { return d; }); | |
}); |
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