function drawLine() {

  // set the dimensions and margins of the graph
var margin = {top: 20, right: 20, bottom: 30, left: 50},
    width = window.screen.availWidth * .95 - margin.left - margin.right,
    height = window.screen.availHeight * .2 - margin.top - margin.bottom;

// parse the date / time
var parseTime = d3.timeParse("%Y-%m-%d");

// set the ranges
var x = d3.scaleTime().range([0, width]);
var y = d3.scaleLinear().range([height, 0]);

// define the line
var valueline = d3.line()
    .x(function(d) { return x(d.date); })
    .y(function(d) { return y(d.streams); });

// append the svg obgect to the body of the page
// appends a 'group' element to 'svg'
// moves the 'group' element to the top left margin
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 + ")");

// Get the data
d3.csv("./data/time.csv", function(error, data) {
  if (error) throw error;
console.log(data)
  // format the data
  data.forEach(function(d) {
      d.date = parseTime(d.date);
      d.streams = +d.streams;
  });

  // Scale the range of the data
  x.domain(d3.extent(data, function(d) { return d.date; }));
  y.domain([100000000, d3.max(data, function(d) { return d.streams; })]);

  // Add the valueline path.
  svg.append("path")
      .data([data])
      .attr("class", "line")
      .attr("d", valueline);

  // Add the X Axis
  svg.append("g")
      .attr("transform", "translate(0," + height + ")")
      .call(d3.axisBottom(x));

      var line_group = svg.append('g');
      var line = line_group.append("line")
        .attr("class", "timeLine")
        .attr("x1", 0)
        .attr("y1", 0)
        .attr("x2", 0)
        .attr("y2", height)
        .attr("opacity", 1)
        .attr("style", "stroke:steelblue;stroke-width:1")

      var text = line_group.append("text")
      var text2 = line_group.append("text").attr("transform", "translate(0,20)")


      // line_group = d3.selectAll(".timeLine,.date")



  function getDate(mouse){
    // var mouse = d3.mouse(this)
    var xDate = x.invert(mouse[0]),
    bisect = d3.bisector(function(d) { return d.date;}).right;
    idx = bisect(data, xDate);
    return [xDate, idx];
  }

  svg.append('rect')
    .attr('width', width)
    .attr('height', height)
    .attr('opacity', 0)
    .on('mouseout', () => line_group.attr('opacity', 0))
    .on('mouseover', () => line_group.attr('opacity', 1))
    .on('mousemove', function(){
      var val = getDate(d3.mouse(this))
      var date = val[0], idx = val[1];

      if (date.getFullYear() == "2019") {
        text.attr("transform", "translate(-2,0)").attr("text-anchor","end");
        text2.attr("transform", "translate(-2,20)").attr("text-anchor","end");
      }
      else {
        text.attr("transform", "translate(0,0)").attr("text-anchor","start");
        text2.attr("transform", "translate(0,20)").attr("text-anchor","start");
      }

      line_group.attr('transform', 'translate(' + x(date) + ',0)')
      text.text("Date: " + date.toLocaleDateString("en-US"))
      text2.text("Streams: " + data[idx].streams)
    })
    .on("click", function() {
      var date = getDate(d3.mouse(this))
      drawMap(date[0])

    })


});

}

drawLine();


/* THIS PART GOES INTO STYLE.CSS

.line {
  fill: none;
  stroke: steelblue;
  stroke-width: 2px;
  opacity: 1;
}

*/