JSFiddle - React, Tailwind, and code Playground

by cesutherland

HTML

<form>
  <label><input type="radio" name="mode" value="grouped"> Grouped</label>
  <label><input type="radio" name="mode" value="stacked" checked> Stacked</label>
</form>

CSS

body {
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  margin: auto;
  position: relative;
  width: 600px;
}

text {
  font: 10px sans-serif;
}

.axis path,
.axis line {
  fill: none;
  stroke: #000;
  shape-rendering: crispEdges;
}

form {
  position: absolute;
  right: 10px;
  top: 10px;
}

JavaScript

var n = 4, // number of layers
    m = 58, // number of samples per layer
    stack = d3.layout.stack(),
    someData = d3.range(n).map(function() { return bumpLayer(m, .1); }),
    layers = stack(someData),
    yGroupMax = d3.max(layers, function(layer) { return d3.max(layer, function(d) { return d.y; }); }),
    yStackMax = d3.max(layers, function(layer) { return d3.max(layer, function(d) { return d.y0 + d.y; }); });

var margin = {top: 40, right: 10, bottom: 20, left: 10},
    width = 600 - margin.left - margin.right,
    height = 500 - margin.top - margin.bottom;

var x = d3.scale.ordinal()
    .domain(d3.range(m))
    .rangeRoundBands([0, width], .08);

var y = d3.scale.linear()
    .domain([0, yGroupMax])
    .range([height, 0]);

var color = d3.scale.linear()
    .domain([0, n - 1])
    .range(["#aad", "#556"]);

var xAxis = d3.svg.axis()
    .scale(x)
    .tickSize(0)
    .tickPadding(6)
    .orient("bottom");

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 + ")");

var layer = svg.selectAll(".layer")
    .data(layers)
  .enter().append("g")
    .attr("class", "layer")
    .style("fill", function(d, i) { return color(i); });

var rect = layer.selectAll("rect")
    .data(function(d) { return d; })
  .enter().append("rect")
    .attr("x", function(d, i, j) { return x(d.x) + x.rangeBand() / n * j; })
    .attr("y", function(d) { return y(d.y); })
    .attr("width", x.rangeBand() / n)
    .attr("height", function(d) { return height - y(d.y); });

/*
var rect = layer.selectAll("rect")
    .data(function(d) { return d; })
  .enter().append("rect")
    .attr("x", function(d) { return x(d.x); })
    .attr("y", function(d) { console.log(d); return y(d.y0 + d.y); })
    .attr("width", x.rangeBand())
    .attr("height", function(d) { return y(d.y0) - y(d.y0 + d.y); });

/*
var...