D3 V4: Using Local Approach to Stock Prices (2000-2010)

<!DOCTYPE html>
<meta charset="utf-8">
<link href="https://fonts.googleapis.com/css?family=Codystar" rel="stylesheet">
<link href="https://fonts.googleapis.com/css?family=Libre+Baskerville" rel="stylesheet">
<style>

body {
  background-color: #F8F3D4;
  font-family: 'Codystar', cursive;
  text-anchor: middle;
}

.line {
  fill: none;
  stroke: #F6416C;
  stroke-width: 1.5px;
}

text {
  text-anchor: end;
  fill: #F6416C;
}

.area {
  fill: url(#area-gradient);
  clip-path: url(#clip);
}

.zoom {
  cursor: move;
  fill: none;
  pointer-events: all;
}
.axis text {
  text-align: inherit;
  font-family: 'Codystar', cursive;
  font-size: 0.8em;
}

.axis path {
  stroke: none;
}

.axis line {
  stroke: #FFDE7D;
  stroke-dasharray: 1px 1px;
}

.brush {
  fill: #FFDE7D;
  fill-opacity: .125;
}

.brush .resize path {
  fill: orange;
  stroke: #666;
}
</style>
<body>
<script src="https://d3js.org/d3.v4.min.js"></script>
<script>

// code attribution to mbostock for https://bl.ocks.org/mbostock/e1192fe405703d8321a5187350910e08

var margin = {top: 8, right: 10, bottom: 2, left: 10},
    width = 960 - margin.left - margin.right,
    height = 100 - margin.top - margin.bottom;

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

var x = d3.scaleTime()
    .range([0, width]);

var y = d3.local();

var xAxis = d3.axisBottom(x),
    yAxis = d3.axisLeft(y);

var area = d3.local()

var line = d3.local();

d3.csv("stocks.csv", type, function(error, data) {
  if (error) throw error;

var symbols = d3.nest()
      .key(function(d) { return d.symbol; })
      .entries(data);

x.domain([
    d3.min(symbols, function(symbol) { return symbol.values[0].date; }),
    d3.max(symbols, function(symbol) { return symbol.values[symbol.values.length - 1].date; })
  ]);

var svg = d3.select("body").selectAll("svg")
      .data(symbols)
    .enter().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 + ")")
      .each(function(d) {
        var ty = y.set(this, d3.scaleLinear()
            .domain([0, d3.max(d.values, function(d) { return d.price; })])
            .range([height, 0]));

area.set(this, d3.area()
            .x(function(d) { return x(d.date); })
            .y0(height)
            .y1(function(d) { return ty(d.price); }));

line.set(this, d3.line()
            .x(function(d) { return x(d.date); })
            .y(function(d) { return ty(d.price); }));
      });

var colours = ["#00b8a9","#20c1b4","#40cabe","#60d3c9","#80dbd4", "#9fe4df"];
  svg.append("linearGradient")
    .attr("id", "area-gradient")
    .attr("gradientUnits", "userSpaceOnUse")
    .attr("spreadMethod", "reflect")
    .style("mix-blend-mode","overlay")
  .selectAll("stop")
    .data(colours)
  .enter().append("stop")
    .attr("offset", function(d,i) { return i/(colours.length-1); })
    .attr("stop-color", function(d) { return d; });

svg.append("path")
      .attr("class", "area")
      .attr("d", function(d) { return area.get(this)(d.values); });

svg.append("path")
      .attr("class", "line")
      .attr("d", function(d) { return line.get(this)(d.values); });

svg.append("text")
      .attr("x", width - 6)
      .attr("y", height - 6)
      .text(function(d) { return d.key; });

});

function type(d) {
  d.price = +d.price;
  d.date = parseDate(d.date);
  return d;
}

</script>

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