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<!-- source is https://bl.ocks.org/mbostock/4060366 -->
<!DOCTYPE html>
<html>
<meta charset="utf-8">
<style>

#title {
	background-color: darkblue;
	color: white;
	padding: 10px;
	text-align: center;
}

body {
	font-family: 'Montserrat', sans-serif;
}

.axis path,
.axis line {
  fill: none;
  stroke: #000;
  shape-rendering: crispEdges;
}

.x.axis path {
  display: none;
}

.line {
  fill: none;
  stroke: limegreen;
  stroke-width: 2px;
}


</style>
<body>
<div class="linechart"></div>
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.4.1/d3.min.js"></script>
<script>

'use strict';

//setup size of line chart
var margin = {top: 20, right: 20, bottom: 30, left: 50},
    width = 600 - margin.left - margin.right,
    height = 400 - margin.top - margin.bottom;

//parse data from file
var parseDate = d3.time.format("%d-%b-%y").parse;

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

var y = d3.scale.linear()
    .range([height, 0]);

//create axes
var xAxis = d3.svg.axis()
    .scale(x)
    .orient("bottom");

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

//construct the line using points from data
var line = d3.svg.line()
    .x(function(d) { return x(d.date); })
    .y(function(d) { return y(d.users); });

var svg = d3.select(".linechart").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.tsv("data.tsv", function(error, data) {
  if (error) throw error;
//traverse through the data 
  data.forEach(function(d) {
    d.date = parseDate(d.date);
    d.users = +d.users;
  });
//establish the domain for x and y axes
  x.domain(d3.extent(data, function(d) { return d.date; }));
  y.domain(d3.extent(data, function(d) { return d.users; }));

//add "groups" 
  svg.append("g")
      .attr("class", "x axis")
      .attr("transform", "translate(0," + height + ")")
      .call(xAxis);

  svg.append("g")
      .attr("class", "y axis")
      .call(yAxis)
    .append("text")
      .attr("transform", "rotate(-90)")
      .attr("y", 6)
      .attr("dy", ".71em")
      .style("text-anchor", "end")
      .text("Users (unique)");

  svg.append("path")
      .datum(data)
      .attr("class", "line")
      .attr("d", line);
});
</script>
</body>
</html>
Online D3JS Editor

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