D3 Examples - TP2 Data viz small multiples UCBL 2017

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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: 10px sans-serif;
        }
​
    .line {
      fill: none;
      stroke: black;
      stroke-width: 2px;
    }
    
    .area {
        fill: lightsteelblue;
      opacity : 0.2
        }
    
  </style>
</head>
​
<body>
  <script>
​
    // Code CSS
    var margin = {top: 20, right: 30, bottom: 20, left: 100},
      width = 760 - margin.left - margin.right,
      height = 200 - margin.top - margin.bottom;
    
    // Mise en place du layout 
/*    
  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 + ")");
*/
    // Parsing de la date pour la mettre au format voulu (mois année)
  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 stack = d3.stack();
​
    // Mise en forme du style de ligne
    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()
    .x(function(d) { return x(d.date); })
    .y1(function(d) { return y(d.price); });
    //.y1(function(d) { return y(d.price); });
        
    // récupération des données
    d3.text('dataset.csv', function(error, raw) {
​
      // parsing du fichier csv
    var dsv = d3.dsvFormat(',')
    var data = dsv.parse(raw);
    
    // Nest stock values by symbol.
    var dataNested = d3.nest()
        .key(function(d) { return d.symbol; })
        .entries(data);
      
      
        // Parse and caculate some values for each symbols
    dataNested.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; });
   
      //console.log(symbols);
    });
      
   
  
 
         
    x.domain(d3.extent(data, function(d) { return d.date; }));
    /*x.domain([
    d3.min(dataNested, function(s) { return s.values[0].date; }),
    d3.max(dataNested, function(s) { return s.values[s.values.length - 1].date; })
  ]);*/
    y.domain([0, d3.max(dataNested.map(function(d) { return d.maxPrice; }))])
    area.y0(y(0));
      
      // Add an SVG element for each symbol, with the desired dimensions and margin.
      
  var svg = d3.select("body").selectAll("svg")
      .data(dataNested)
    .enter().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 + ")");
​
   
  // add the area
     //svg.selectAll(".area").data(dataNested).enter()
     svg.append("path").data(dataNested)
       .attr("class", "area")
       .attr("d", function(d) { y.domain([0, d.maxPrice]); return area(d.values); })
     .style("fill", function(d) { return c(d.key); });
            
    
    //svg.selectAll(".line").data(dataNested).enter()
      svg.append("path").data(dataNested)
            .attr("class", "line")
        .attr("d", function(d) { y.domain([0, d.maxPrice]); return line(d.values); })
            .style("stroke", function(d) { return c(d.key); });
​
    svg.append("g")
        .attr("class", "axis axis--x")
        .attr("transform", "translate(0," + height + ")")
        .call(d3.axisBottom(x));
​
    svg.append("g")
        .attr("class", "axis axis--y")
        .call(d3.axisLeft(y).ticks(20));
​
      // Add a small label for the symbol name.
  svg.append("text")
    .data(dataNested)
      .attr("x", width - 6)
      .attr("y", height - 6)
      .style("text-anchor", "end")
      .text(function(d) { return d.key; });
      
  
   
  });
​
  </script>
</body>
​
    