Simple stream 2016 by devgru

index.html

<!DOCTYPE html>
<meta charset='utf-8'>
<style>
    body { font: 10px sans-serif; }
    p { font: 12px helvetica; }

    .axis path, .axis line {
        fill: none;
        stroke: #000;
        shape-rendering: crispEdges;
    }
</style>
<body>
<script src='//d3js.org/d3.v3.js'></script>
<script src='//d3js.org/colorbrewer.v1.js'></script>
<script>
    var format = d3.time.format('%m/%d/%y')
    var margin = {top: 20, right: 40, bottom: 30, left: 30}
    var width = 600 - margin.left - margin.right
    var height = 400 - margin.top - margin.bottom
    var x = d3.time.scale()
      .range([0, width])
    var y = d3.scale
      .linear()
      .range([height - 10, 0])
    var color = d3.scale.ordinal()
      .range(colorbrewer.Blues[6])

    var xAxis = d3.svg.axis()
      .scale(x)
      .orient('bottom')

    var area = d3.svg.area()
      .interpolate('cardinal')
      .x(function(d) { return x(d.date) })
      .y0(function(d) { return y(d.y0) })
      .y1(function(d) { return y(d.y0 + d.y) })

    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 + ')')

    d3.csv('//nemetz.devg.ru/d3/stream.csv', function (d) {
      d.date = format.parse(d.date)
      d.value = Number(d.value)
      return d
    }, function (data) {
      var nest = d3.nest()
        .key(function(d) { return d.key })

      nested = nest.entries(data)
        
      var stack = d3.layout.stack()
        .offset('silhouette') // wiggle
        .values(function(d) { return d.values })
        .x(function(d) { return d.date })
        .y(function(d) { return d.value })

      layers = stack(nested)

      x.domain(d3.extent(data, function (d) {
        return d.date
      }))
      y.domain([0, d3.max(data, function (d) {
        return d.y0 + d.y
      })])

      svg.selectAll('.layer')
        .data(layers)
        .enter().append('path')
        .attr('class', 'layer')
        .attr('d', function (d) { return area(d.values) })
        .style('fill', function (d, i) { return color(i) })

      svg.append('g')
        .attr('class', 'x axis')
        .attr('transform', 'translate(0,' + height + ')')
        .call(xAxis)
    })
</script>