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Here you can Sed posuere consectetur est at lobortis. Donec ullamcorper nulla non metus auctor fringilla. Maecenas sed diam eget risus varius blandit sit amet non magna. Donec id elit non mi porta gravida at eget metus. Praesent commodo cursus magna, vel scelerisque nisl consectetur et.

            
                <div class="container">
    <div class="row">
      <div class="col-md-4">
        <div class="panel panel-default">
          <div class="panel-body">
            <form role="form" class="categories">
            </form>
          </div>
        </div>
      </div>
      <div class="col-md-8">
        <div class="graph"></div>
      </div>
    </div>
  </div>
            
          
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              body {
  background-color: #F2EDE4;
}

.container {
  margin-top: 20px;
}

.panel {
  background-color: #D9D1C7;
}

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

.bar {
  fill: steelblue;
}
            
          
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              // Tutorial: http://frameworkish.com/html/2016/05/04/grouped-dynamic-bar-chart-d3.html
var data = [
  {
    state: 'CA',
    stats: [2704659,4499890,2159981,3853788,10604510,8819342,4114496]
  },
  {
    state: 'TX',
    stats: [2027307,3277946,1420518,2454721,7017731,5656528,2472223]
  },
  {
    state: 'NY',
    stats: [1208495,2141490,1058031,1999120,5355235,5120254,2607672]
  },
  {
    state: 'FL',
    stats: [1140516,1938695,925060,1607297,4782119,4746856,3187797]
  },
  {
    state: 'IL',
    stats: [894368,1558919,725973,1311479,3596343,3239173,1575308]
  },
  {
    state: 'IL',
    stats: [737462,1345341,679201,1203944,3157759,3414001,1910571]
  }
];

var ids = ['preeschol', 'gradeschooler', 'teen', 'youngAdult', 'adult', 'middleAge', 'retired'];
var ageNames = ['Under 5 Years', '5 to 13 Years', '14 to 17 years', '18 to 24 years', '25 to 44 Years', '45 to 64 Years', '65 Years and Over'];

// Let's populate the categoeries checkboxes
d3.select('.categories').selectAll('.checkbox')
  .data(ids)
  .enter()
  .append('div')
  .attr('class', 'checkbox')
  .append('label').html(function(id, index) {
    var checkbox = '<input id="' + id + '" type="checkbox" class="category">';
    return checkbox + ageNames[index];
  });

// some variables declarations
var margin = {top: 20, right: 20, bottom: 30, left: 40},
    width = 800 - margin.left - margin.right,
    height = 400 - margin.top - margin.bottom;

// the scale for the state age value
var x = d3.scale.linear().range([0, width]);

// the scale for each state
var y0 = d3.scale.ordinal().rangeBands([0, height], .1);
// the scale for each state age
var y1 = d3.scale.ordinal();

// just a simple scale of colors
var color = d3.scale.ordinal()
    .range(["#98abc5", "#8a89a6", "#7b6888", "#6b486b", "#a05d56", "#d0743c", "#ff8c00"]);

//
var xAxis = d3.svg.axis()
    .scale(x)
    .orient("bottom")
    .tickFormat(d3.format(".2s"));

var yAxis = d3.svg.axis()
    .scale(y0)
    .orient("left");

var svg = d3.select(".graph").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.select('.categories').selectAll('.category').on('change', function() {
  var x = d3.select('.categories').selectAll('.category:checked');
  var ids = x[0].map(function(category) {
    return category.id;
  });
  updateGraph(ids);
});
renderGraph();

function renderGraph() {
  x.domain([0, 0]);
  // y0 domain is all the state names
  y0.domain(data.map(function(d) { return d.state; }));
  // y1 domain is all the age names, we limit the range to from 0 to a y0 band
  y1.domain(ageNames).rangeRoundBands([0, y0.rangeBand()]);

  svg.append("g")
      .attr("class", "x axis")
      .attr("transform", "translate(0," + height + ")")
      .call(xAxis);

  svg.append("g")
      .attr("class", "y axis")
      .call(yAxis)
}

function updateGraph(selectedIds) {

  var statesData = data.map(function(stateData) {
    return {
      state: stateData.state,
      ages: selectedIds.map(function(selectedId) {
        var index = ids.findIndex(function(id) {
          return selectedId === id;
        });
        return {
          id: ids[index],
          name: ageNames[index],
          value: stateData.stats[index]
        };
      })
    }
  });


  // x domain is between 0 and the maximun value in any ages.value
  x.domain([0, d3.max(statesData, function(d) { return d3.max(d.ages, function(d) { return d.value }); })]);
  // y0 domain is all the state names
  y0.domain(statesData.map(function(d) { return d.state; }));
  // y1 domain is all the age names, we limit the range to from 0 to a y0 band
  y1.domain(ids).rangeRoundBands([0, y0.rangeBand()]);

  svg.selectAll('.axis.x').call(xAxis);
  svg.selectAll('.axis.y').call(yAxis);

  var state = svg.selectAll(".state")
    .data(statesData);

  state.enter().append("g")
    .attr("class", "state")
    .attr("transform", function(d) { return "translate(0, " + y0(d.state) + ")"; });

  var age = state.selectAll("rect")
    .data(function(d) { return d.ages; });

  // we append a new rect every time we have an extra data vs dom element
  age.enter().append("rect")
    .attr('width', 0);

  // this updates will happend neither inserting new elements or updating them
  age
    .attr("x", 0)
    .attr("y", function(d, index) { return y1(ids[index]); })
    .attr("id", function(d) { return d.id; })
    .style("fill", function(d) { return color(d.name); })
    .text(function(d) { return d.name })
    .transition()
    .attr("width", function(d) { return x(d.value); })
    .attr("height", y1.rangeBand());

  age.exit().transition().attr("width", 0).remove();

  var legend = svg.selectAll(".legend")
      .data(statesData[0].ages.map(function(age) { return age.name; }));

  legend.enter().append("g");
  legend
      .attr("class", "legend")
      .attr("transform", function(d, i) { return "translate(0," + (200 + i * 20) + ")"; });

  var legendColor = legend.selectAll('.legend-color').data(function(d) { return [d]; });
  legendColor.enter().append("rect");
  legendColor
    .attr('class', 'legend-color')
    .attr("x", width - 18)
    .attr("width", 18)
    .attr("height", 18)
    .style("fill", color);

  var legendText = legend.selectAll('.legend-text').data(function(d) { return [d]; });;

  legendText.enter().append("text");
  legendText
    .attr('class', 'legend-text')
    .attr("x", width - 24)
    .attr("y", 9)
    .attr("dy", ".35em")
    .style("text-anchor", "end")
    .text(function(d) { return d; });

  legend.exit().remove();
}
            
          
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