Stacked to grouped

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forked from romsson's block: Stacked bar chart v4

<!DOCTYPE html>
<style>

.axis .domain {
  display: none;
}

</style>
<body>
<script src="https://d3js.org/d3.v4.min.js"></script>
<script>

// Source: https://bl.ocks.org/mbostock/3886208

d3.csv('stocks.csv', function(error, datas) {
    
    var n = 4, // number of samples
    m = 11; // number of series
    
    datasFiltered = {}
    datas.forEach(function(el,index){
      year = +el.date.substr(el.date.length-4);
      if (!datasFiltered[year]) {
  			datasFiltered[year] = {}
        datasFiltered[year][el.symbol] = [+el.price]
      }
      else {
        if (!datasFiltered[year][el.symbol]) {
          datasFiltered[year][el.symbol] = [+el.price];
        }
        else {
          datasFiltered[year][el.symbol].push(+el.price);
        }
      }
    });
    
    console.log(datasFiltered,"ici");
    
    datasFinal = []
    for (year in datasFiltered) {
      var temp_array = []
      for (symbol in datasFiltered[year]) {
        var values = datasFiltered[year][symbol]
        var mean_values = values.reduce(function(a, b) { return a + b; })/ values.length;
        temp_array.push(mean_values);
      }
      datasFinal.push(temp_array);
    }
    
    
    var data = d3.range(m).map(function() { 
      return d3.range(n).map(Math.random); 
    });

var margin = {top: 20, right: 30, bottom: 30, left: 40},
        width = 960 - margin.left - margin.right,
        height = 500 - margin.top - margin.bottom;

var y = d3.scaleLinear()
    .domain([0, d3.max(datasFinal.map(function(el){return d3.sum(el)}))])
    .rangeRound([height, 0])
		.nice();

var x = d3.scaleBand()
    .rangeRound([0, width])
    .paddingInner(0.05)
    .align(0.1)
    .domain(d3.range(datasFinal.length));

var z = d3.scaleOrdinal()
    .range(["#98abc5", "#8a89a6", "#7b6888", "#6b486b", "#a05d56", "#d0743c", "#ff8c00"]);

});
</script>

https://d3js.org/d3.v4.min.js