D3 Examples - TP3_small

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<!DOCTYPE html>
<head>
  <meta charset="utf-8">
  <script src="https://d3js.org/d3.v4.min.js"></script>
  <style>
    body { margin:0;position:fixed;top:0;right:0;bottom:0;left:0; }
    
        svg {
        font: 12px sans-serif;
        }
    .line {
      fill: none;
      stroke: black;
      stroke-width: 2px;
    }
  </style>
</head>
​
<body>
<script>
    
var m = [40, 60, 20, 20],
    width = 960 - m[1] - m[3],
    height = 120 - m[0] - m[2];
​
var color = d3.scaleOrdinal(d3.schemeCategory10);
​
var parseDate = d3.timeParse("%b %Y");
​
var x = d3.scaleTime().range([0, width]),
  y = d3.scaleLinear().range([height, 0]),
  c = d3.scaleOrdinal(d3.schemeCategory10);
​
var line = d3.line()
  .curve(d3.curveBasis)
  .x(function(d) { return x(d.date); })
  .y(function(d) { return y(d.price); });
  
var area = d3.area()
  .curve(d3.curveBasis)
  .x(function(d) { return x(d.date); })
  .y1(function(d) { return y(d.price); });
  
var axis = d3.line()
  .curve(d3.curveBasis)
  .x(function(d) { return x(d.date); })
  .y(height);
  
d3.text('dataset.csv', function(error, raw) {
​
  var dsv = d3.dsvFormat(',')
  var data = dsv.parse(raw);
  
  // Nest stock values by symbol.
  var symbols = d3.nest()
      .key(function(d) { return d.symbol; })
      .entries(data);
​
    // Parse and caculate some values for each symbols
  symbols.forEach(function(s) {
    s.values.forEach(function(d) { 
      d.date = parseDate(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; });
  });
         
  x.domain(d3.extent(data, function(d) { return d.date; }));
  y.domain([0, d3.max(symbols.map(function(d) { return d.maxPrice; }))])
  area.y0(y(0));
​
  var svg = d3.select("body").selectAll("svg")
   .data(symbols)
   .enter().append("svg")
   .attr("width", width + m[3] + m[1])
   .attr("height", height + m[0] + m[2])
   .append("g")
   .attr("transform", "translate(" + m[3] + "," + m[0] + ")");
​
  svg.append("path")
   .attr("class", "area")
   .attr("d", function(d) { y.domain([0, d.maxPrice]); return area(d.values); })
   .style("fill", function(d) { return color(d.key)})
  
  axis.y(height / 4 + 46);
  svg.append("path")
   .attr("class", "line")
     .attr("d", function(d) { return axis(d.values); });
  
  svg.append("text")
    .attr("x", width+10)
    .attr("y", 40)
    .text(function(d) { return d.key; });
});
​
</script>
</body>
​
    