Grouped Stacked Bar Chart

This grouped bar chart is constructed from a CSV file storing the populations of different states by age group. The chart employs conventional margins and a number of D3 features:

d3.csv - load and parse data
d3.scale.ordinal - x-position encoding and color encoding
d3.scale.linear - y-position encoding
d3.format - SI prefix formatting (e.g., “10M” for 10,000,000)
d3.max - compute domains
d3.keys - compute column names
d3.svg.axis - display axes

forked from mbostock's block: Grouped Bar Chart

forked from SpaceActuary's block: Grouped Stacked Bar Chart

<!DOCTYPE html>
<style>

.axis .domain {
  display: none;
}

</style>
<svg width="960" height="500"></svg>
<script src="https://d3js.org/d3.v4.min.js"></script>
<script>
console.clear()
var svg = d3.select("svg"),
    margin = {top: 40, right: 100, bottom: 60, left: 60},
    width = +svg.attr("width") - margin.left - margin.right,
    height = +svg.attr("height") - margin.top - margin.bottom,
    g = svg.append("g").attr("transform", "translate(" + margin.left + "," + margin.top + ")");

var x0 = d3.scaleBand()
    .rangeRound([0, width])
    .paddingInner(0.1);

var x1 = d3.scaleBand()
    .padding(0.05);

var y = d3.scaleLinear()
    .rangeRound([height, 0]);

var y1 = d3.scaleBand()
  
var z = d3.scaleOrdinal()
    .range(["#98abc5", "#8a89a6", "#7b6888", "#6b486b", "#a05d56", "#d0743c", "#ff8c00"]);

console.log("keys", keys)
  
  var serie = g.selectAll(".serie")
    .data(stackData)
    .enter().append("g")
      .attr("class", "serie")
      .attr("fill", function(d) { return z(d.key); });
  
  serie.selectAll("rect")
    .data(function(d) { return d; })
    .enter().append("rect")
  		.attr("class", "serie-rect")
  		.attr("transform", function(d) { return "translate(" + x0(d.data.State) + ",0)"; })
      .attr("x", function(d) { return x1(d.data.Year); })
      .attr("y", function(d) { return y(d[1]); })
      .attr("height", function(d) { return y(d[0]) - y(d[1]); })
      .attr("width", x1.bandwidth())
  		.on("click", function(d, i){ console.log("serie-rect click d", i, d); });
  
  g.append("g")
      .attr("class", "x-axis")
      .attr("transform", "translate(0," + height + ")")
      .call(d3.axisBottom(x0));

g.append("g")
      .attr("class", "axis")
      .call(d3.axisLeft(y).ticks(null, "s"))
    .append("text")
      .attr("x", 2)
      .attr("y", y(y.ticks().pop()) + 0.5)
      .attr("dy", "0.32em")
      .attr("fill", "#000")
      .attr("font-weight", "bold")
      .attr("text-anchor", "start")
      .text("Population");

console.log((width - (keys.length * 120)))
  
 console.log(keys.length*120)
 console.log(width+margin.right+margin.left)
 
  var legend = g.append("g")
      .attr("font-family", "sans-serif")
      .attr("font-size", 10)
      .attr("text-anchor", "end")
    		.attr("transform", function(d, i) {return "translate(" + -(width - (((width+margin.right+margin.left) - ((keys.length * 120))+27)/2)	) +"," + (height + 40) + ")"; })//27 is difference between computed g width length of legend and keys.length * 120
    .selectAll("g")
    .data(keys.slice())
    .enter().append("g")
      .attr("transform", function(d, i) { return "translate("+ i * 120 +",0)"; });

legend.append("rect")
      .attr("x", width - 19)
      .attr("width", 25)
      .attr("height", 19)
      .attr("fill", z);

legend.append("text")
      .attr("x", width - 24)
      .attr("y", 9.5)
      .attr("dy", "0.32em")
      .text(function(d) { return d; });
    
  /*var legend = serie.append("g")
      .attr("class", "legend")
      .attr("transform", function(d) { var d = d[d.length - 1]; return "translate(" + (x0(d.data.State) + x1(d.data.Year) + x1.bandwidth()) + "," + ((y(d[0]) + y(d[1])) / 2) + ")"; });

legend.append("line")
      .attr("x1", -6)
      .attr("x2", 6)
      .attr("stroke", "#000");

legend.append("text")
      .attr("x", 9)
      .attr("dy", "0.35em")
      .attr("fill", "#000")
      .style("font", "10px sans-serif")
      .text(function(d) { return d.key; });
      */
  
});

</script>

https://d3js.org/d3.v4.min.js