Emails by Timezone

<!DOCTYPE html>
<meta charset="utf-8">

body {
    font-family: arial, sans;
    font-size: 14px;
    margin: 30px auto;
  }
  svg {
    overflow: visible;
  }

.tooltip {
    background-color: #f7f7f7;
    padding: 3px 12px;
    font-family: sans-serif;
    border: 1px solid #bbbbbb;
    box-shadow: 1px 1px 4px #bbbbbb;
  }
  .tooltip_title {
    font-weight: bold;
    font-size: 14px;
    max-width: 300px;
    word-wrap: normal;
  }
  .tooltip_body {
    font-weight: normal;
  }

.title {
    font-size: 36;
    font-weight: bold;
  }

</style>

<body>

</body>

// There are many abbreviations for each time zone.
// I took only one as a reference.
var tzToAbbrv = {
  '0': 'UTC',
  '+1': 'CET',
  '+2': 'CAT',
  '+3': 'TRT',
  '+3.5': 'IRST',
  '+4': 'GST',
  '+4.5': 'AFT',
  '+5': 'PKT',
  '+5.5': 'IST',
  '+5.75': 'NPT',
  '+6': 'BST',
  '+6.5': 'CCT',
  '+7': 'THA',
  '+8': 'MYT',
  '+9': 'JST',
  '+9.5': 'ACST',
  '+10': 'PGT',
  '+11': 'NCT',
  '+12': 'NZST',
  '+12.75': 'CHAST',
  '+13': 'TOT',
  '+14': 'LINT',
  '-1': 'CVT',
  '-2': 'FNT',
  '-2.5': 'NDT',
  '-3': 'ADT',
  '-3.5': 'NST',
  '-4': 'AMT',
  '-5': 'EST',
  '-6': 'CST',
  '-7': 'MST',
  '-8': 'PST',
  '-9': 'GIT',
  '-9.5': 'MIT',
  '-10': 'CKT',
  '-11': 'SST',
  '-12': 'BIT',
}

var getTimeZone = function(name) {
  return name.replace(/[A-Za-z ]/g, "")
}

var map_margin = {top: 110, right: 70, bottom: 30, left: 20};
var map_width = 800 - map_margin.left - map_margin.right;
var map_height = 400 - map_margin.top - map_margin.bottom;

var bar_margin = {top: 30, right: 40, bottom: 30, left: 50};
var bar_width = 550 - bar_margin.left - bar_margin.right;
var bar_height = 400 - bar_margin.top - bar_margin.bottom;

var color = d3.scaleSequential(function(t) {
  t += .1; // darken the base color a tad.
  return d3.interpolateBlues(t);
});

// set the ranges for bar chart
var x = d3.scaleBand()
          .range([0, bar_width])
          .padding(0.1);
var y = d3.scaleSqrt()
          .range([bar_height, 0]);

var title = d3.select("body")
  .append("div")
  .attr("class", "title")
  .style("font-size", "41px")
  .style("font-weight", "bold")
  .style("margin", "0 0 50px 72px")
  .text("Emails by Timezone")

var bar_svg = d3.select("body").append("svg")
    .attr('width', bar_width + bar_margin.left + bar_margin.right)
    .attr('height', bar_height + bar_margin.top + bar_margin.bottom)
    .append('g')
      .attr('transform', 'translate(' + [bar_margin.left, bar_margin.top] + ')')
      .classed("original", true)

var map_svg = d3.select("body").append("svg")
    .attr('width', map_width + map_margin.left + map_margin.right)
    .attr('height', map_height + map_margin.top + map_margin.bottom)
    .append('g')
      .attr('transform', 'translate(' + [map_margin.left, map_margin.top] + ')')
      .classed("original", true)

var tooltip = d3.select("body")
    .append("div")
    .attr("class", "tooltip")
    .style("position", "absolute")
    .style("z-index", "10")
    .style("visibility", "hidden");

var projection = d3.geoMercator()
  .scale(135) // to make map fit inside svg.
  .translate([400, 200]) // move up, right, down, or left

var path = d3.geoPath()
  .projection(projection);

var dispatch = d3.dispatch('tzchange', 'leave');

d3.queue()
    .defer(d3.json, "tz_data.json")
    .defer(d3.csv, "email_data.csv")
    .await(ready);

function ready(error, world, data) {
  if (error) return console.warn(error);

// format email data into tz to count obj
  var data_obj = {};
  data.forEach(function(d) {
    d.count = +d.count;
    data_obj[d.tz] = +d.count
  })
  _.sortBy(data_obj, function(d) {
    return d.tz;
  })

// Scale the range of the data in the domains
  x.domain(data.map(function(d) { return d.tz; }));
  y.domain([0.5, d3.max(data, function(d) { return d.count; })]);
  color.domain([0, d3.max(data, function(d) { return +d.count; })]);

var world_data = topojson.feature(world, world.objects.timezones).features

// add bar chart
  bar_svg .append("g")
    .attr('width', bar_width)
    .attr('height', bar_height)
    .selectAll(".bar")
        .data(data)
      .enter().append("rect")
        .attr("class", function(d) {
          abbrev = tzToAbbrv[d.tz];
          return "bar " + abbrev;
        })
        .attr("x", function(d) { return x(d.tz); })
        .attr("width", x.bandwidth())
        .attr("y", function(d) { return y(d.count); })
        .attr("height", function(d) { return bar_height - y(d.count); })
        .style("fill", function(d) { return color(d.count); })
      .on("mouseover", function(d) {
        var tz = getTimeZone(d.tz);
        var count = data_obj[tz] || 0;
        dispatch.call('tzchange', this, tz, count);
      })
      .on("mousemove", function() {
        return tooltip.style("top", (d3.event.pageY-52) + "px").style("left", (d3.event.pageX+18) + "px");
      })
      .on("mouseout", function() {
        dispatch.call('leave', this, world_data, data_obj)
      });

// add the x Axis
  bar_svg.append("g")
      .attr("transform", "translate(0," + bar_height + ")")
      .call(d3.axisBottom(x))
      .classed('x-axis', true);

// add the y Axis
  bar_svg.append("g")
      // .call(d3.axisLeft(y).ticks(4, ".0s"))
      .call(d3.axisLeft(y))
      .classed('y-axis', true);

// add world map with mouse events
  map_svg.append("g")
      .attr("class", "world")
      .attr('width', map_width)
    .selectAll("path")
      .data(world_data)
    .enter().append("path")
      .attr("class", function(d) {
        tz = getTimeZone(d.properties.Name);
        abbrev = tzToAbbrv[tz];
        return "country " + abbrev;
      })
      .attr("d", path)
      .style("fill", function(d, i) {
        var tz = getTimeZone(d.properties.Name),
            count = data_obj[tz] || 0;
        return color(count);
      })
    .on("mouseover", function(d) {
      var tz = getTimeZone(d.properties.Name),
          email_count = data_obj[tz] || 0;
      dispatch.call('tzchange', this, tz, email_count);
     })
     .on("mousemove", function() {
       return tooltip.style("top", (d3.event.pageY-52) + "px").style("left", (d3.event.pageX+18) + "px");
     })
     .on("mouseout", function(d) {
       dispatch.call('leave', this, d, data_obj)
     });
}

dispatch.on('leave', function(data, data_obj) {
  d3.selectAll('.country').style('opacity', 1)
    .style('fill', function(d) {
      var tz = getTimeZone(d.properties.Name),
          count = data_obj[tz] || 0;
      return color(count)
    });
  d3.selectAll('.bar').style('opacity', 1)
    .style('fill', function(d) {
      return color(d.count)
    });
  return tooltip.style("visibility", "hidden");
})

dispatch.on('tzchange', function(tz, count) {
  var abbrev = tzToAbbrv[tz];
  // decrease opacity for all non-selected timezones
  d3.selectAll('.country').style('opacity', .2)
    .style('fill', color(0));
  d3.selectAll('.bar').style('opacity', .2)
    .style('fill', color(0));
  d3.selectAll('.' + abbrev).style('opacity', 1)
    .style('fill', color(count));

tooltip.html("")
    .append("pre").attr("class", "tooltip_body")
    .text("Emails from " + tzToAbbrv[tz] + " " + tz + ": " + count);

return tooltip.style("visibility", "visible");
})

</script>

Modified http://d3js.org/d3.v4.js to a secure url

Modified http://d3js.org/topojson.v1.min.js to a secure url

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

https://d3js.org/d3-scale-chromatic.v1.min.js

https://d3js.org/topojson.v1.min.js

https://cdn.jsdelivr.net/lodash/4.17.2/lodash.min.js