DataViz_TP3_areas

forked from romsson's block: loading multiple stock data from dataset

<!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;
    }
  </style>
</head>

<body>
  <script>
    
  var margin = {top: 20, right: 30, bottom: 20, left: 100},
      width = 760 - margin.left - margin.right,
      height = 300 - margin.top - margin.bottom;
   
  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 + ")");
    
  var g = svg.append("g");

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 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; });
      
      console.log(symbols);
    });
    		 
    x.domain(d3.extent(data, function(d) { return d.date; }));

y.domain([0, d3.max(symbols.map(function(d) { return d.maxPrice; }))])
    
    var texts=svg.selectAll(".symbols").data(symbols).enter().append("text");
    texts
     	.attr("x", x(x.domain()[1])+5)
     	.attr("dy", ".35em")
     	.style("text-anchor", "start")
     	.text(function(d) { return d.key; })
    	.attr("y", function(d) {return y(d.maxPrice);});
      
    arealines();
    
   
    // FONCTION AREAS
    function arealines(){
      drawlines();
			svg.selectAll(".area").data(symbols).enter().append("path")
      	.attr("class","area")
      	.attr("d", function(d) { return area(d.values); })
        .attr("fill", function(d) { return c(d.key); })
      	.attr("opacity", 0.5);
      	
    }
    
    // FONCTION LINES
    function drawlines(){
      svg.selectAll(".line").data(symbols).enter()
        .append("path")
          .attr("class", "line")
          .attr("d", function(d) { return line(d.values); })
          .style("stroke", "black");

var legend = svg.selectAll(".legend")
      .data(c.domain())
    .enter().append("g")
      .attr("class", "legend")
      .attr("transform", function(d, i) { return "translate(0," + i * 20 + ")"; });

legend.append("rect")
        .attr("x", 30)
        .attr("width", 18)
        .attr("height", 18)
        .style("fill", c);

legend.append("text")
        .attr("x", 50)
        .attr("y", 9)
        .attr("dy", ".35em")
        .style("text-anchor", "start")
        .text(function(d) { return d; });
    }
    
    	// draw axis
      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));

});
    
  </script>
</body>

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