D3 Examples - Stocks Bar chart

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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; }
  </style>
</head>
​
<body>
  <script>
    // Feel free to change or delete any of the code you see in this editor!
    
var margin= {top: 20, bottom: 20, left: 40, right: 40}
height = 500 - margin.bottom - margin.top,
width = 960 - margin.right - margin.bottom;
    
var svg = d3.select("body").append("svg")
.attr("width", width)
.attr("height", height);
​
var y = d3.scaleLinear()
.range([0, height/3]);
​
// ordinal
var x = d3.scaleBand()
.range([0, width]);
    
var color = d3.scaleOrdinal().range(["#ff1111","#f3ff0f","#0fdbff","#0600d1"]);
​
var ChartType = 'stacked';    
    
// lecture du csv
d3.csv("stocks.csv",function(data)
      {
    data.forEach(function(d){
    d.symbol = d.symbol;
    d.date = d3.timeParse("%b %Y")(d.date);
    d.month = d3.timeFormat("%b")(d.date);
    d.year = d3.timeFormat("%Y")(d.date);
    //console.log(d.year)
    d.price = +d.price;
  })
​
  
var mes_donnees = d3.nest()
                                        .key(function(d){return d.year;})
                                            .key(function(d){return d.symbol;})
                                            .rollup(function(d) { return d3.mean(d, function(d) { return d.price; }); })
                                        .entries(data)
  
​
​
​
  d3.selectAll("body").on("click",function(){
    if(ChartType==="stacked"){ChartType = "grouped",DessinerGraphique(mes_donnees,ChartType);}
    else{ChartType="stacked",DessinerGraphique(mes_donnees,ChartType);}
      
  });
function DessinerGraphique(data,type){  
if (type==="stacked"){
        console.log("stacké")
        d3.selectAll("circle").remove()
​
  
    x.domain([2000,2001,2002,2003,2004,2005,2006,2007,2008,2009,2010]);
    y.domain([0, d3.max(data,sum(function(d){return d.price;}))]);
  
    
      svg.append("g").selectAll("g")
    .data(d3.stack(data).keys([2000,2001,2002,2003,2004,2005,2006,2007,2008,2009,2010]))            
      
      .enter()
        .append("g")
      .style("fill",function(d){return color(d.symbol)})
      
      .selectAll("rect")
      .data(function(d){console.log(d);})
      .enter()
      .append("rect")
        .attr("x", function(d,i){return x(i)})
      .attr("y", function(d){console.log(d)
        
                            ;})
      .attr("height", 20)
      .attr("width", 20)
}
    
if (type==="grouped"){
        console.log("groupé")
        d3.selectAll("rect").remove()
  //x.domain([2000,d3.max(data,function(d){return d.year;})]);
    x.domain([2000,2001,2002,2003,2004,2005,2006,2007,2008,2009,2010]);
    y.domain([0, d3.max(data,function(d){return d.price;})]);
  
    
      svg.selectAll("body")
        .data(data)
      .enter()
        .append("circle")
        .attr("cx", function(d, i) { return x(i); })
      .attr("cy", function(d, i) { return y(d); })
      .style("fill",function(d){return color(d.symbol)})
        .attr("r",10);
}      
}    
}) // fin de lecture du csv
​
  </script>
</body>
​
    