Area Chart by bricedev

index.html

<!DOCTYPE html>
<meta charset="utf-8">
<style>

body {
  font: 10px sans-serif;
}

svg {
  background-color: #FF9618
}

.axis path,
.axis line {
  display: none;
}

.overlay {
  fill: none;
  pointer-events: all;
}

</style>
<body>
<script src="https://d3js.org/d3.v3.js"></script>
<script>

var width = 960,
    height = 500;

var parseDate = d3.time.format("%d-%b-%y").parse,
    bisectDate = d3.bisector(function(d) { return d.date; }).left,
    formatValue = d3.format(",.2f"),
    formatCurrency = function(d) { return "$" + formatValue(d); },
    formatDate = d3.time.format("%d %B %Y");

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

var y = d3.scale.linear()
    .range([height, 50]);

var xAxis = d3.svg.axis()
    .scale(x)
    .orient("top");

var yAxis = d3.svg.axis()
    .scale(y);

var area = d3.svg.area()
    .x(function(d) { return x(d.date); })
    .y0(height)
    .y1(function(d) { return y(0); });

var svg = d3.select("body").append("svg")
    .attr("width", width)
    .attr("height", height)
  .append("g");

d3.tsv("data.tsv", function(error, data) {
  data.forEach(function(d) {
    d.date = parseDate(d.date);
    d.close = +d.close;
  });

  data.sort(function(a, b) {
    return a.date - b.date;
  });

  x.domain([data[0].date, data[data.length - 1].date]);
  y.domain(d3.extent(data, function(d) { return d.close; }));


  var path = svg.append("path")
      .datum(data)
      .attr("class", "area")
      .attr("d", area)
      .style("fill", "#FEAE4F")

  area.y1(function(d) { return y(d.close); });
  
  path.transition().duration(2000).attr("d",area);

  svg.append("g")
      .attr("class", "x axis")
      .attr("transform", "translate(0," + height + ")")
      .call(xAxis)
      .selectAll("text")  
      .style("font-weight","bold")
      .style("font-size",12)
      .style("fill", "#fff");

  var keys = svg.append("g")
    .attr("class","keys");

  keys.append("text")
    .attr("class","price")
    .attr("x", width/2)
    .attr("y", 100)
    .style("fill","#fff")
    .style("text-anchor","middle")
    .style("font-size","35px")
    .transition()
    .duration(2000)
    .tween("text", function() {
      var i = d3.interpolate(0, data[data.length-1].close);
      return function(t) {
        this.textContent = formatCurrency(i(t));
      };
    });

  keys.append("text")
    .attr("class","date")
    .attr("x", width/2)
    .attr("y", 50)
    .style("fill","#fff")
    .style("text-anchor","middle")
    .style("font-size","35px")
    .text(formatDate(data[data.length-1].date));

  var focus = svg.append("g")
      .attr("class", "focus")
      .style("display", "none");

  focus.append("circle")
      .attr("r", 4.5)
      .style("fill","#fff");

  focus.append("line")
    .attr("x1", 0)
    .attr("y1", 0)
    .attr("x2", 0)
    .attr("y2", height)
    .style("stroke","#fff")
    .style("stroke-width",.5);

  svg.append("rect")
      .attr("class", "overlay")
      .attr("width", width)
      .attr("height", height)
      .on("mouseover", function() { focus.style("display", null); })
      .on("mouseout", function() { focus.style("display", "none"); })
      .on("mousemove", mousemove);

  function mousemove() {
    var x0 = x.invert(d3.mouse(this)[0]),
        i = bisectDate(data, x0, 1),
        d0 = data[i - 1],
        d1 = data[i],
        d = x0 - d0.date > d1.date - x0 ? d1 : d0;
    focus.select("circle").attr("transform", "translate(" + x(d.date) + "," + y(d.close) + ")");
    focus.select("line").attr("transform", "translate(" + x(d.date) + ",0)");
    keys.select(".price").transition().text(formatCurrency(d.close));
    keys.select(".date").transition().text(formatDate(d.date));
  };

});

</script>