stream graph

forked from romsson's block: area chart overlap

forked from axbazin's block: stack graph

forked from anonymous's block: stream graph

<!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 parseDate = d3.timeParse("%b %Y");

var x = d3.scaleTime().range([0, width]),
    y = d3.scaleLinear().range([height, 0]),
    c = d3.scaleOrdinal(d3.schemeCategory10);

y.domain([d3.min(series, stackMin), d3.max(series, stackMax)])

svg.selectAll(".layer")
    	.data(series)
    	.enter().append("g")
      .attr("class", "layer")
			.append("path")
      .attr("class", "area")
      .style("fill", function(d) { return c(d.key); })
      .attr("d", area);
    
    svg.append("g")
        .attr("class", "axis axis--x")
        .attr("transform", "translate(0," + height + ")")
        .call(d3.axisBottom(x));
    
  });
    
    function stackMax(layer) {
  return d3.max(layer, function(d) { return d[1]; });
}

function stackMin(layer) {
  return d3.min(layer, function(d) { return d[0]; });
}
  </script>
</body>

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