Bar Chart and Table

<!DOCTYPE html>
<head>
  <meta charset="utf-8">
   <link rel="stylesheet" href="//netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.min.css">
<link href='https://fonts.googleapis.com/css?family=Open+Sans:400,700' rel='stylesheet' type='text/css'> 
  <script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.min.js"></script>

<body>
<div class="col-md-12">
  <h3 id="market-name">market</h3>
</div>
  
  <div class="col-md-4">

var dateparser = d3.time.format("%m/%d/%Y");  
var pctformat = d3.format("%");
var r2precision = d3.format(".2f")
var mformat = d3.format(",");  
var months = {0:"Jan", 1:"Feb", 2:"Mar", 3:"Apr", 4:"May", 5:"Jun", 6:"Jul", 7:"Aug", 8:"Sep", 9:"Oct", 10:"Nov", 11:"Dec" };
var data = [];
var columns = ["Period", "Visits", "Bounce Rate", "Avg. Visit Duration" ];
var markets =[];

var marketSelector = d3.select("#page-title")
  .append("select")
  .attr("id", "market-selector")
  .on("change", function() { selectMarket(this.value); });

var margin = {top: 40, right: 50, bottom: 50, left:75
             },
    width = 700 - margin.left - margin.right,
    height = 300 - margin.top - margin.bottom;
  
var svg = d3.select("#area1").append("svg")
      .attr("width",width+ margin.left + margin.right)
      .attr("height", height + margin.top + margin.bottom)
      .append("g")
      .attr("class","viewport")
      .attr("transform", "translate(" + margin.left + "," + margin.top + ")");

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

var table = d3.select("#roster")
  .append("table")
  .classed("table", true);
var thead = table.append("thead");
var tbody = table.append("tbody");

var x = d3.scale.ordinal()
    .rangeRoundBands([0, width], .1);

//start reload
//console.log("start reload")  
var reload = function () {
d3.csv("data.csv", function(records){
   data = records;
   data.forEach(function (d) {
     d.Date = dateparser.parse(d.Date);
     d.Month = d.Date.getMonth();
     d.Year = d.Date.getFullYear();
     d.Period = d.Year + "-" + (d.Month+1)
     d.Visits = +d.Visits;
     d.Bounces = +d.Bounces;
     d.Pageviews = +d.Pageviews;
     d.SPV = +d.SPV;
     d.TotalSeconds = +d.TotalSeconds;
     if (markets.indexOf(d.Market)<0) {
        markets.push(d.Market);
        };
   });
//console.log(data);

//establish x and y axes
x.domain(data.map(function(d) { return d.Period; }));
y.domain([0, d3.max(data, function(d) { return d.Visits; })]);
  
var xAxis = d3.svg.axis()
    .scale(x)
    .orient("bottom");

var yAxis = d3.svg.axis()
    .scale(y)
    .orient("Left")
    .ticks(5)
    .tickFormat(d3.format("s"));
  
svg.append("g")
      .attr("class", "x-axis")
      .style("font-size","11px")
      .attr("transform", "translate(0," + height + ")")
      .call(xAxis);
 
svg.append("g")
      .attr("class", "y-axis")
      .call(yAxis)
      .append("text")
      .attr("transform", "rotate(-90)")
      .attr("y", 6)
      .attr("dy", ".30em")
      .style("text-anchor", "end")
      .style("font-size","12px")
      .text("visits");

markets.sort();
selectMarket(markets[0]);

});
};
    
//start of redraw function
var redraw = function(roster) {  
var nested_data = [];
current_sel = svg.selectAll(".bar").data(nested_data),function(d){return d;};

current_sel.enter().append("rect")
      .attr("class", "bar")
      .attr("x", function(d) { return x(d.chartPeriod); })
      .attr("width", x.rangeBand())
      .attr("y", function(d) { return y(d.chartVisits); })
      .attr("height", function(d) { return height - y(d.chartVisits);});
  
   current_sel.exit().remove();
  
var nested_data = d3.nest()
   .key(function(d) {return d.Period; }).sortKeys(d3.ascending)
   .rollup(function(v) {return{
       visits:d3.sum(v, function(d) {return d.Visits; }),
       BounceRate : d3.sum(v, function(d) {return d.Bounces; })/d3.sum(v, function(d) {return d.Visits; }),
       AVD:d3.sum(v, function (d) {return d.TotalSeconds;}) / (d3.sum(v, function(d) {return d.Visits; })-d3.sum(v, function(d) {return d.Bounces; }))/60
       };})
   .entries(roster);

nested_data.forEach(function (d) {
    d.Period = months[d.key.split("-").pop() - 1] + "-" + d.key.slice(0,4) ;
    d.Visits = mformat(d.values.visits);
    d["Bounce Rate"] = pctformat(d.values.BounceRate);
    d["Avg. Visit Duration"] = r2precision(d.values.AVD)
    d.chartVisits = +d.values.visits
    d.chartPeriod = d.Period
});
console.log(nested_data);

//update axes domains and establish rescaled axes 
x.domain(nested_data.map(function(d) { return d.chartPeriod; }));
y.domain([0, d3.max(nested_data, function(d) { return d.chartVisits; })]);

var xAxis = d3.svg.axis()
    .scale(x)
    .orient("bottom");

var yAxis = d3.svg.axis()
    .scale(y)
    .orient("left")
    .ticks(5)
    .tickFormat(d3.format("s"));  
  
d3.select(".x-axis")
    .transition()
    .call(xAxis);
  
d3.select(".y-axis")
    .transition()
    .call(yAxis);

//update drop-down selector
marketSelector.selectAll("option")
    .data(markets)
    .enter()
    .append("option")
    .attr("value", function(d) { return d; })
    .text(function(d) { return d; })
    .sort(function(a,b) { return d3.ascending(a,b); });

//update table header and rows  
  thead.selectAll("tr")
    .data([columns])
    .enter()
    .append("tr")
    .selectAll("th")
    .data(function(d) { return d; })
    .enter()
    .append("th")
   .on("click",  function(d) {
      tbody.selectAll("tr")
        .sort(function(a,b) {
          return (d === 'No')
            ? d3.ascending(+a[d], +b[d])
            : d3.ascending(a[d], b[d])
        })
     .style("background-color", function(d,i) { return (i%2)? "white":"lightgray"; });
    }).text(function(d) { return d; })
    ;
 
var rows = tbody.selectAll("tr")
    .data(nested_data);
    
  rows.enter()
    .append("tr")
    .style("background-color", function(d,i) { return (i%2)? "white":"lightgray"; });
  rows.exit().remove();
  
  var cells = rows.selectAll("td")
    .data(function(row) { return columns.map(function(col) {
      return row[col];
    });});
    
  cells.enter().append("td");
  
  cells.text(function(d) { return d; });  
  cells.exit().remove();

//redraw chart 
  current_sel = svg.selectAll(".bar").data(nested_data),function(d){return d;};

current_sel.enter().append("rect")
      .attr("class", "bar")
      .attr("x", function(d) { return x(d.chartPeriod); })
      .attr("width", x.rangeBand())
    .attr("y",y(0))
   .attr("height",0)
       .transition()
       .delay(function (d, i) { return i*50; })
       .duration(800)
      .attr("y", function(d) { return y(d.chartVisits); })
      .attr("height", function(d) { return height - y(d.chartVisits);});
  
   current_sel.exit().remove();

//tooltip  
var div = d3.select("#area1").append("div")
       .style("position", "absolute")
       .style("text-align","center")
       .style("width","120px")
       .style("height", "3.0 em")
       .style("font", "1em Open Sans")
       .style("color", "black")
       .style("background","white")
       .style("border-radius", "4px")
       .style("border", "solid 2px red")
       .style("opacity", 0);  
  
     
      function mouseover(d) {
       div.html ("Period: " + d.chartPeriod + "<br />" 
                 + "Visits: " + d.chartVisits)
                 .style("left", (x(d.chartPeriod)) + 90 + "px")
                 .style ("top", (y(d.chartVisits)) - 10 + "px")
                 .style("opacity",1);
      }
    
     function mouseout() {
        div.style("opacity", 1e-6)
           .style("left","1px")
           .style("top", height+100);
     }  
       
       d3.selectAll(".bar")
         .on("mouseover", mouseover)
         .on("mouseout", mouseout);

};

//end of redraw function

var selectMarket = function(marketId) {
  var roster = data.filter(function(d) { return d.Market === marketId; });
  
  redraw(roster);
  
d3.select("#market-name").text(marketId + ": Summary Metrics");

document.getElementById("market-selector").value = marketId;  
  
};

reload();

</script>
</body>
</html>

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