D3 Examples - Stocks transition

xxxxxxxxxx
 
<!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; }
  </style>
</head>
​
<body>
  <script>
    
var dataset
var w = 960;
var h = 500;
​
d3.csv("stocks.csv", function(error, data){
  if (error){
    console.log(error)
  } else{       
    data.forEach(function(d){
      d.price = +d.price;
      d.year = d3.timeParse("%b %Y")(d.date).getFullYear();
    })
    dataset = data;
    create_vizualisation(dataset);
  }
})
​
function create_vizualisation(dataset){
  var z = d3.scaleOrdinal()
                        .range(["#98abc5", "#8a89a6", "#7b6888", "#6b486b", "#a05d56", "#d0743c", "#ff8c00"]);
  
  var n_year = d3.nest()
                             .key(function(d){return d.year})
                             .entries(dataset)
                             .length;
  
  var n_symbol = d3.nest()
                             .key(function(d){return d.symbol})
                             .entries(dataset)
                             .length;
  
  var x0 = d3.scaleBand()
    .domain(d3.range(n_year))
    .range([0, w], .2);
  
  var x1 = d3.scaleBand()
      .domain(d3.range(n_symbol))
      .range([0, x0.bandwidth() - 10]);
​
  var y = d3.scaleLinear()
      .domain([0, d3.max(dataset, function(d){return d.price})])
      .range([h, 0]);
  
  var color = d3.scaleOrdinal()
        .range((["#98abc5", "#8a89a6", "#7b6888", "#6b486b", "#a05d56", "#d0743c", "#ff8c00"]));
  
  data_year_symb = d3.nest()
        .key(function(d){return d.year})
    .key(function(d){return d.symbol})
    .rollup(function(v) {return d3.mean(v, function(d){return d.price})})
    .entries(dataset)
    
  data_symb_year = d3.nest()
    .key(function(d){return d.symbol})
        .key(function(d){return d.year})
    .rollup(function(v) {return d3.mean(v, function(d){return d.price})})
    .entries(dataset)
  
  var svg = d3.select("body").append("svg")
      .attr("width", w)
      .attr("height", h);
  
  console.log(data_year_symb)
  console.log(d3.stack()
              .keys()
              .value(function(d, i){console.log(d.values); return d.values})
                     (dataset));
  
//  svg.append("g").selectAll("g")
//      .data(d3.stack().keys(d3.range(n_)))
​
/*  svg.append("g").selectAll("g")
    .data(nested_dataset)
    .enter().append("g")
    .style("fill", function(d, i){return z(i)})
        .attr("transform", function(d, i) { return "translate(" + x1(i) + ",0)"; })
    .attr("fill", function(d, i){return color(i)})
  .selectAll("rect")
    .data(function(d) {return d.values})
    .enter().append("rect")
    .attr("width", x1.bandwidth())
    .attr("height", function(d){return y(d.value)})
    .attr("x", function(d, i) { return x0(i); })
    .attr("y", function(d) { return h - y(d.value); })
*/
​
}
​
  </script>
</body>
​
    