D3 Examples - etape2

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<!DOCTYPE html>
<meta charset="utf-8">
<style>
​
body {
  
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  margin: auto;
  position: relative;
  width: 960px;
}
​
text {
  font: 10px sans-serif;
}
​
.axis path {
  display: none;
}
​
.axis line {
  fill: none;
  stroke: #000;
  shape-rendering: crispEdges;
}
​
.group-label {
  font-weight: bold;
  text-anchor: end;
}
​
form {
  position: absolute;
  right: 10px;
  top: 10px;
}
​
</style>
<form>
  <label><input type="radio" name="mode" value="multiples" checked> Multiples</label>
 
</form>
<script src="//d3js.org/d3.v3.min.js"></script>
<script>
​
  var area = d3.svg.area()
    .interpolate("basis")
    .x(function(d) { return x(d.date); })
    .y1(function(d) { return y(d.price); });
​
var format = d3.time.format("%b %y").parse;
var margin = {top: 10, right: 20, bottom: 20, left: 60},
    width = 960 - margin.left - margin.right,
    height = 500 - margin.top - margin.bottom;
var format = d3.time.format("%b %Y");
var y0 = d3.scale.ordinal()
    .rangeRoundBands([height, 0], .2);
​
var y1 = d3.scale.linear();
var duration = 900,
 delay = 500;
var x = d3.scale.ordinal()
    .rangeRoundBands([0, width], .1, 0);
​
var y = d3.scale.linear()
    .range([height-10, 0]);
  var xAxis = d3.svg.axis()
    .scale(x)
    .orient("bottom")
    .tickFormat(format);
  
var yAxis = d3.svg.axis()
    .scale(y);
var nest = d3.nest()
    .key(function(d) { return d.symbol; });
var area = d3.svg.area()
    .interpolate("basis")
    .x(function(d) { return x(d.date); })
    .y1(function(d) { return y(d.price); });
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) { d.valueOffset = y0; });
​
var color = d3.scale.category10();
​
  
var svg = d3.select("body").append("svg")
    .attr("width", width + margin.left + margin.right)
    .attr("height", height + margin.top + margin.bottom)
  .append("g")
    .attr("transform", "translate(" + margin.left + "," + margin.top + ")");
​
d3.csv("stocks.csv", function(error, data) {
​
  data.forEach(function(d) {
    d.date = format.parse(d.date);
    d.price = +d.price;
  });
​
  var dataByGroup = nest.entries(data);
​
  stack(dataByGroup);
  
  x.domain(dataByGroup[0].values.map(function(d) { return d.date; }));
  y0.domain(dataByGroup.map(function(d) { return d.key; }));
  y.domain([0, d3.max(data, function(d) { return d.price; })]);
  y1.domain([0, d3.max(data, function(d) { return d.price; })]).range([y0.rangeBand(), 0]);
​
  var symbol = svg.selectAll(".symbol")
      .data(dataByGroup)
    .enter().append("g")
      .attr("class", "symbol")
      .attr("transform", function(d) { return "translate(0," + y0(d.key) + ")"; });
​
  symbol.append("text")
      .attr("class", "group-label")
      .attr("x", -6)
      .attr("y", function(d) { return y1(d.values[0].price / 2); })
      .attr("dy", ".35em")
      .text(function(d) { return "Group " + d.key; });
​
  symbol.selectAll("rect")
      .data(function(d) { return d.values; })
    .enter().append("rect")
      .style("fill", function(d) { return color(d.symbol); })
      .attr("x", function(d) { return x(d.date); })
      .attr("y", function(d) { return y1(d.price); })
      .attr("width", x.rangeBand())
      .attr("height", function(d) { return y0.rangeBand() - y1(d.price); });
svg.append("g")
      .attr("class", "y axis")
      .attr("transform", "translate(" + width + ", 0)")
      .call(yAxis.orient("right"));
  symbol.filter(function(d, i) { return !i; }).append("g")
      .attr("class", "x axis")
      .attr("transform", "translate(0," + y0.rangeBand() + ")")
      .call(xAxis);
  
​
  var timeout = setTimeout(function() {
    d3.select("input[value=\"multiples\"]").property("checked", true).each(change);
  }, 2000);
​
  function change() {
    clearTimeout(timeout);
   transitionMultiples();
​
  }
 
​
  
function transitionMultiples() {
    var t = svg.transition().duration(500),
        g = t.selectAll(".symbol").attr("transform", function(d) { return "translate(0," + y0(d.key) + ")"; });
    g.selectAll("rect").attr("y", function(d) { return y1(d.price); });
    g.select(".group-label").attr("y", function(d) { return y1(d.values[0].price / 2); })
  }
​
  
​
  
  
  
  
  
​
​
});
​
</script>
​
    