D3 Examples - Tp3_DV

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<!DOCTYPE html>
<meta charset="utf-8">
<style type="text/css">
​
  svg {
    font-family: "Helvetica Neue", Helvetica;
  }
​
  .line {
    fill: none;
    stroke: #000;
    stroke-width: 2px;
  }
​
  </style>
  <body>
  <script src="//d3js.org/d3.v3.min.js"></script>
  <script>
​
  var m = [20, 20, 30, 20],
      w = 960 - m[1] - m[3],
      h = 500 - m[0] - m[2];
​
  var x, y, duration = 1500, delay = 500;
​
  var color = d3.scale.category10();
​
  var svg = d3.select("body").append("svg")
      .attr("width", w + m[1] + m[3])
      .attr("height", h + m[0] + m[2])
      .append("g")
      .attr("transform", "translate(" + m[3] + "," + m[0] + ")");
​
  var symbols;
​
  // A line generator, for the dark stroke.
  var line = d3.svg.line()
      .interpolate("basis")
      .x(function(d) { return x(d.date); })
      .y(function(d) { return y(d.price); });
​
  // A line generator, for the dark stroke.
  var axis = d3.svg.line()
      .interpolate("basis")
      .x(function(d) { return x(d.date); })
      .y(h);
​
  // A area generator, for the dark stroke.
  var area = d3.svg.area()
      .interpolate("basis")
      .x(function(d) { return x(d.date); })
      .y1(function(d) { return y(d.price); });
​
  d3.csv("dataset.csv", function(data) {
    var parse = d3.time.format("%b %Y").parse;
​
    // Nest stock values by symbol.
    symbols = d3.nest()
        .key(function(d) { return d.symbol; })
        .entries(stocks = data);
​
    symbols.forEach(function(s) {
      s.values.forEach(function(d) { d.date = parse(d.date); d.price = +d.price; });
      s.maxPrice = d3.max(s.values, function(d) { return d.price; });
      s.sumPrice = d3.sum(s.values, function(d) { return d.price; });
    });
    //Trier
    symbols.sort(function(a, b) { return b.maxPrice - a.maxPrice; });
​
    var g = svg.selectAll("g")
        .data(symbols)
      .enter().append("g")
        .attr("class", "symbol");
​
    setTimeout(lines, duration);
​
  });
​
  /**************************************************************************/
  function lines() {
    x = d3.time.scale().range([0, w - 60]);
    y = d3.scale.linear().range([h / 4 - 20, 0]);
​
    // min et max des dates pour chaque simbole
    x.domain([
      d3.min(symbols, function(d) { return d.values[0].date; }),
      d3.max(symbols, function(d) { return d.values[d.values.length - 1].date; })
    ]);
​
    var g = svg.selectAll(".symbol")
    .attr("transform", function(d, i) { return "translate(0," + (i * h / 4 + 10) + ")"; });
​
    g.each(function(d) {
      var e = d3.select(this);
      e.append("path")
          .attr("class", "line");
​
    });
        setTimeout(horizons, 0);
  }
​
  /**************************************************************************/
​
  function horizons() {
​
    var g = svg.selectAll(".symbol");
​
    area
        .y0(h / 4 - 20);
​
    g.select("text").transition()
        .duration(duration)
        .attr("transform", function(d) { return "translate(" + (w - 60) + "," + (h / 4 - 20) + ")"; })
​
    g.each(function(d) {
      y.domain([0, d.maxPrice]);
​
     d3.select(this).selectAll(".area")
         .data(d3.range(3))
          .enter().insert("path", ".line")
          .attr("class", "area");
    });
​
    setTimeout(areas, 0);  
​
  }
​
  /**************************************************************************/
​
  function areas() {
    var g = svg.selectAll(".symbol");
​
    axis.y(h / 4 - 21);
​
    g.select(".line")
        .attr("d", function(d) { return axis(d.values); });
​
    g.each(function(d) {
      y.domain([0, d.maxPrice]);
​
      d3.select(this).selectAll(".area")
          .filter(function(d, i) { return !i; })
          .style("fill", color(d.key))
          .attr("d", area(d.values));
​
    });
​
    svg.select("defs").transition()
        .duration(duration)
        .remove();
​
    g.transition()
        .duration(duration)
        .each("end", function() { d3.select(this).attr("clip-path", null); });
​
    setTimeout(stackedArea, duration + delay);
  }
​
  /**************************************************************************/
​
  function stackedArea() {
    var stack = d3.layout.stack()
        .values(function(d) { return d.values; })
        .x(function(d) { return d.date; })
        .y(function(d) { return d.price; })
        .out(function(d, y0, y) { d.price0 = y0; })
        .order("reverse");
​
    stack(symbols);
​
    y.domain([0, d3.max(symbols[0].values.map(function(d) { return d.price + d.price0; }))])
      .range([h, 0]);
​
    line.y(function(d) { return y(d.price0); });
​
    area.y0(function(d) { return y(d.price0); })
        .y1(function(d) { return y(d.price0 + d.price); });
​
    var t = svg.selectAll(".symbol").transition()
        .duration(duration)
        .attr("transform", "translate(0,0)")
        .each("end", function() { d3.select(this).attr("transform", null); });
​
    t.select("path.area")
        .attr("d", function(d) { return area(d.values); });
​
    t.select("path.line")
        .style("stroke-opacity", function(d, i) { return i < 3 ? 1e-6 : 1; })
        .attr("d", function(d) { return line(d.values); });
​
    setTimeout(streamgraph, duration + delay);
  }
​
  /**************************************************************************/
  function streamgraph() {
    var stack = d3.layout.stack()
        .values(function(d) { return d.values; })
        .x(function(d) { return d.date; })
        .y(function(d) { return d.price; })
        .out(function(d, y0, y) { d.price0 = y0; })
        .order("reverse")
        .offset("wiggle");
​
    stack(symbols);
​
    line.y(function(d) { return y(d.price0); });
​
    var t = svg.selectAll(".symbol").transition()
        .duration(duration);
​
    t.select("path.area")
        .attr("d", function(d) { return area(d.values); });
​
    t.select("path.line")
        .style("stroke-opacity", 1e-6)
        .attr("d", function(d) { return line(d.values); });
​
    setTimeout(overlappingArea, duration + delay);
  }
​
  /**************************************************************************/
​
  function overlappingArea() {
    var g = svg.selectAll(".symbol");
    line.y(function(d) { return y(d.price0 + d.price); });
​
    g.select(".line")
        .attr("d", function(d) { return line(d.values); });
​
    y.domain([0, d3.max(symbols.map(function(d) { return d.maxPrice; }))])
        .range([h, 0]);
​
    area.y0(h)
        .y1(function(d) { return y(d.price); });
​
    line.y(function(d) { return y(d.price); });
​
    var t = g.transition()
        .duration(duration);
​
    t.select(".line")
        .style("stroke-opacity", 1)
        .attr("d", function(d) { return line(d.values); });
​
    t.select(".area")
        .style("fill-opacity", .5)
        .attr("d", function(d) { return area(d.values); });
​
​
  }
</script>
    