Obesity in the United States - iteration v1

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="utf-8">
    <title>Obesity vs poverty scatterplot</title>
    <script type="text/javascript" src="https://d3js.org/d3.v3.js"></script>
    <style type="text/css">
      body {
        background-color: #fff1e0;
        margin: 0;
        font-family: Arial, sans-serif;
      }
      
      form{
        position: absolute;
        top: 80px;
        left: 582px;
        font-size: 12px;
        color: #74736c;
      }
      circle {
        fill: #bb6d82;
      }

.barLabel {
        font-size: 10px;
        fill: #74736c;
        pointer-events: none;
      }
      
      .labelsOn{
        opacity: 1;
        transition: opacity 0.3s;
      }
      .labelsOff{
        opacity: 0;
        transition: opacity 0.3s;
      }
      .barValue {
        font-size: 12px;
        fill: #74736c;
      }

h1, p {
        position: relative;
        left: 10px;
        color: #333333;
        font-weight: normal;
      }

.hover{
        fill: #9e2f50;
        transition: fill 0.2s;
      }

.footnote {
        position: relative;

}

.source{
        font-size: 11px;
      }
      
      .axis line {
        fill: none;
        stroke: #e9decf;
        stroke-dasharray:2,1;
        shape-rendering: crispEdges;
      }
      
      .axis text {
        font-family: Arial,sans-serif;
        font-size: 11px;
        fill: #74736c;
      }
      
      .x.axis path,
      .y.axis path{
        opacity: 0;
      }

.toolTip{
        padding: 6px;
        background-color: #fff;
        border-radius: 4px;
        position: absolute;
        font-size: 12px;
        line-height: 18px;
        visibility: hidden;
      }
      .stateName{
        font-weight: bold;
        font-size: 14px;
        /*margin-bottom: -8px;
        display: block;*/
      }
      .dataNum{
        font-weight: bold;
      }
      .subhead{
        fill: #74736c;
        font-size: 14px;
      }
    
    #cbLabel{
      margin-right: 20px;
    }
     
    label{
        margin-right: 12px;
    }

</style>
  </head>
  <body>
    <div class="toolTip"></div>
    <form>
      <input type="checkbox" class="myCB" name="vehicle" value="states" checked="true"/>
      <label id="cbLabel" for="states">Show state labels</label>
      <input type="radio" class="myRB" name="vehicle" value="2005" checked="true"/>
      <label for="2005">2005</label>
      <input type="radio" class="myRB" name="vehicle" value="2010"/>
      <label for="2010">2010</label>
      <input type="radio" class="myRB" name="vehicle" value="2013"/>
      <label for="2013">2013</label>
    </form>

var body = d3.select('body');

body.append('h1')
        .text('Obesity in the United States')

var svg = d3.select('body').append('svg'),
          barHeight = 10,
          circlespace = 5
         
      svg.append('text')
        .text('% of Americans in poverty, by state (2013)')
        .attr('transform', function(d) {
          return "rotate(-90 0, 360)"
        })
        .attr('x', 0)
        .attr('y', h/2)
        .attr('text-anchor', 'middle')
        .attr('class', 'y subhead')
        .attr('opacity', 0)

svg.append('text')
        .text('% of Americans classified as obese, by state (2013)')
        .attr('x', w/2)
        .attr('y', h -3 )
        .attr('text-anchor', 'middle')
        .attr('class', 'x subhead')
        .attr('opacity', 0)
      
      svg.attr('width', w)
          .attr('height', h)
      
      var xScale = d3.scale.linear()
              .range([ margin.left, w - margin.left - margin.right ]);
    
      var yScale = d3.scale.linear()
                .range([0, h - margin.bottom ]);

var xAxis = d3.svg.axis()
              .scale(xScale)
              .tickSize(-(h-margin.top - margin.bottom))
              .ticks(12)
              .orient('bottom');
      var yAxis = d3.svg.axis()
              .scale(yScale)
              .tickSize(-w-margin.left - margin.right)
              .ticks(15)
              .orient('left');
     
      //Load in contents of CSV file
      d3.csv('obesityPoverty.csv', function(data) {
        console.log(data);

data.sort(function(a,b) {
          return d3.descending(a.obesity2013, b.obesity2013)
        });

xScale.domain([
          d3.min(data, function(d) {
          return +d.obesity2005 -1;
        }), d3.max(data, function(d) {
          return +d.obesity2013 +1;
        }) ]);

yScale.domain([
          d3.max(data, function(d) {
            return +d.poverty2013 +1;
          }),
          d3.min(data, function(d) {
            return +d.poverty2005 -1;
          })
        ]);

svg.append('g')
          .attr('class', 'x axis')
          .attr('transform', 'translate(' + -w + ',' +  (h - margin.bottom) + ')')
          .call(xAxis);
        
        svg.append('g')
          .attr('class', 'y axis')
          .attr('transform', 'translate(' + margin.left + ',' + -w +')')
          .call(yAxis);

d3.select('.y.axis')
          .transition()
          .delay(1000)
          .duration(800)
          .ease('quad')
          .attr('transform', 'translate(' + margin.left + ',0)')

d3.select('.x.axis')
          .transition()
          .duration(800)
          .ease('quad')
          .attr('transform', 'translate(0,' +  (h - margin.bottom) + ')')

d3.select('.x.subhead')
          .transition()
          .delay(800)
          .attr('opacity', 1)

d3.select('.y.subhead')
          .transition()
          .delay(1800)
          .attr('opacity', 1)

var circleGroups = svg.selectAll('.circleGroup')
                    .data(data)
                    .enter()
                    .append('g')
                    .attr({
                      'class': 'circleGroup'
                    })

circleGroups.append('text')
          .text(function(d) { return d.state; })
          .attr({
            'class': 'barLabel',
            'dx': 4,
            'dy': -4,
            'x': function(d) { return xScale(d.obesity2013); },
            'y': function(d) { return yScale(d.poverty2013); },
            'opacity': 0,
          })

circles.style('cursor', 'pointer')
        
        circles.on('mouseover', function(d) { 
          d3.select(this)
            .classed('hover', true)
            .transition()
            .attr('r', 10)
          
        tt = d3.select('.toolTip');
          tt.html('<span class="stateName">' + d.state + '</span><br/>' + 'Obesity ' + rbYr + ': <span class="dataNum">' + d.obesity2013 + '</span>%<br/>Poverty ' + rbYr + ': <span class="dataNum">' + d.poverty2013 + '</span>%')
            .style('top', d3.event.pageY - 12 + 'px')
            .style('visibility', 'visible')
         })

circles.on('mouseout', function() { 
          d3.select(this)
            .classed('hover', false)
            .transition()
            .attr('r', 5)
          tt.style('visibility', 'hidden')
         })

circleGroups.on('mousemove', function (d) {

var toolW = d3.select('.toolTip').node().getBoundingClientRect().width;

if(d3.event.pageX > (w - toolW)) {
            tt.style('left', d3.event.pageX - toolW - 12 + 'px')
          } else {
            tt.style('left', d3.event.pageX + 12 + 'px')
          }
        })

body.append('p')
          .text('Source: Centers for Disease Control and Prevention')
          .attr('class', 'source')

body.append('p')
          .text('Hover over the circles!!!')
          .attr('class', 'footnote')

d3.selectAll('.myRB').on('click', function() {
            rbYr = this.value;
            circles.transition().ease('quad').duration(500)
              .attr({
                'cx': function(d) { return xScale(d['obesity' + [rbYr]]); },
                'cy': function(d) { return yScale(d['poverty' + [rbYr]]); }
                })

d3.selectAll('.barLabel').transition().ease('quad').duration(500)
              .attr({
                'x': function(d) { return xScale(d['obesity' + [rbYr]]); },
                'y': function(d) { return yScale(d['poverty' + [rbYr]]); }
                })  
        })
        d3.select('.myCB').on('click', function() {
          if (this.checked) {
            d3.selectAll('.barLabel')
              .classed('labelsOn', true)
              .classed('labelsOff', false)
          }
          else {
             d3.selectAll('.barLabel')
              .classed('labelsOff', true)
              .classed('labelsOn', false)
          }
        });

d3.selectAll('.barLabel')
          .classed('labelsOn', true)
          .classed('labelsOff', false)

});
    </script>

</body>
</html>

https://d3js.org/d3.v3.js