D3 Examples - Worktime

Worktime
This stacked 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-dsv - load and parse data
d3-scale - x- and y-position, and color encoding
d3-format - SI prefix formatting (e.g., “10M” for 10,000,000)
d3-array - compute simple statistics (e.g., max)
d3-axis - display axes
d3-shape - computed stacked positions
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<!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>
​
var svg = d3.select("svg"),
    margin = {top: 20, right: 20, bottom: 30, left: 40},
    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 x = d3.scaleBand()
    .rangeRound([0, width])
    .paddingInner(0.05)
    .align(0.1);
​
var y = d3.scaleLinear()
    .rangeRound([0, height]);
// var z = d3.scaleOrdinal(d3.schemeAccent);
​
var z = d3.scaleOrdinal()
    .range(["#98abc5", "#8a89a6", "#7b6888", "#6b486b", "#a05d56", "#d0743c", "#ff8c00"]);
  
var mouseover_text_size = 15;
  
var date_format = d3.timeFormat("%B %d, %Y")
var int_format = d3.format("02")
  
d3.csv("data.csv", function(d, i, columns) {
  // Format data
  //console.log(d);
  if (typeof d["start"] == "undefined" || typeof d["end"] == "undefined") {
    return null
  }
  
  //for (i = 0, t = 0; i < columns.length; ++i) t += d[columns[i]] = +d[columns[i]];
  var start_date = new Date(d.start * 1000)
  var end_date = new Date(d.end * 1000)
  d.day = new Date(start_date.getFullYear(), start_date.getMonth(), start_date.getDate())
  d.total = d.end - d.start;
  d.start_hour = start_date.getHours()
  d.start_minutes = start_date.getMinutes()
  d.start_time_of_day = d.start_hour * 60 + d.start_minutes
  d.end_hour = end_date.getHours()
  d.end_minutes = end_date.getMinutes()
  d.end_time_of_day = d.end_hour * 60 + d.end_minutes
  return d;
}, function(error, data) {
  if (error) throw error;
​
  //var keys = data.columns.slice(1);
  var tasks = []
  for(var k in data) {
    if (k != "columns")
        tasks[data[k].activity] = true
  }
  tasks = Object.keys(tasks)
  //console.log(tasks)
​
  var keys = []
  for(var k in data) {
    if (k != "columns")
        keys[data[k].day] = true
  }
  keys = Object.keys(keys)
  
  //data.sort(function(a, b) { return b.total - a.total; });
  x.domain(data.map(function(d) { return d.day; }))
  //console.log(data)
  //console.log(d3.min(data, function(d) {return d.start_time_of_day}))
  //console.log(d3.max(data, function(d) { return d.end_time_of_day; }))
  //y.domain([d3.min(data, function(d) {return d.start_time_of_day}), d3.max(data, function(d) { return d.end_time_of_day; })]).nice();
  y.domain([450, 1170])
  z.domain(tasks);
​
  g.append("g")
    .selectAll("g")
    .data(d3.stack().keys(keys)(data))
    .enter().append("g")
    .selectAll("rect")
    .data(function(d) { return d; })
    .enter().append("rect")
      .attr("fill", function(d) { return z(d.data.activity); })
      .attr("x", function(d) { return x(d.data.day); })
      .attr("y", function(d) { return y(d.data.start_time_of_day); })
      .attr("height", function(d) { /*console.log(d);*/return y(d.data.end_time_of_day) - y(d.data.start_time_of_day); })
      .attr("width", x.bandwidth())
        .on("mouseover", handle_mouseover)
        .on("mouseout", handle_mouseout);
​
  g.append("g")
      .attr("class", "axis")
      .attr("transform", "translate(0," + height + ")")
      .call(d3.axisBottom(x).tickFormat(date_format));
​
  g.append("g")
      .attr("class", "axis")
      .call(d3.axisLeft(y).tickValues(d3.range(450, 1170,30)).tickFormat(function (d) {return int_format(parseInt(d / 60)) +":"+ int_format(parseInt(d % 60))}))
      //.call(d3.axisLeft(y).ticks(null, "s"))
​
  var legend = g.append("g")
      .attr("font-family", "sans-serif")
      .attr("font-size", 10)
      .attr("text-anchor", "end")
    .selectAll("g")
    .data(tasks.slice().reverse())
    .enter().append("g")
      .attr("transform", function(d, i) { return "translate(0," + i * 20 + ")"; });
​
  legend.append("rect")
      .attr("x", width - 19)
      .attr("width", 19)
      .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; });
});
  
  function handle_mouseover(rect_d) {
    var parent = d3.select(this.parentNode);
    d3.select(this)
      .attr("fill", function(d) {
        return d3.rgb(z(d.data.activity)).brighter(0.25);
        })
        .attr("stroke-width", "2px")
        .attr("stroke", function(d){
        return d3.rgb(z(d.data.activity)).brighter(0.25);
        })
    parent.append("text")
        .attr("x", function() { return x(rect_d.data.day) + x.bandwidth() / 2 })
      .attr("y", function() { 
        return y(rect_d.data.end_time_of_day) + (y(rect_d.data.start_time_of_day) - y(rect_d.data.end_time_of_day)) / 2 - mouseover_text_size * 0.6; 
        })
        .classed("mouseover_text", true)
        .style("font-size", mouseover_text_size)
      .style("text-anchor", "middle")
    .text(function() {
      return int_format(rect_d.data.start_hour) + "h" + int_format(rect_d.data.start_minutes) +
        "-" +
        int_format(rect_d.data.end_hour) + "h" + int_format(rect_d.data.end_minutes)
    })
   .attr("pointer-events", "none")
    parent.append("text")
        .attr("x", function() { return x(rect_d.data.day) + x.bandwidth() / 2 })
      .attr("y", function() { 
        return y(rect_d.data.end_time_of_day) + (y(rect_d.data.start_time_of_day) - y(rect_d.data.end_time_of_day)) / 2 + mouseover_text_size * 0.6; 
        })
        .classed("mouseover_text", true)
        .style("font-size", mouseover_text_size)
      .style("text-anchor", "middle")
    .text(function() {
      return rect_d.data.activity
    })
   .attr("pointer-events", "none")
​
  }
  function handle_mouseout() {
    d3.select(this)
      .attr("fill", function(d) {return z(d.data.activity);})
        .attr("stroke-width", "1px")
    d3.selectAll("text.mouseover_text").remove()
  }
​
</script>
​
    