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Responsive vertical bar chart

<!DOCTYPE html>
<meta charset="utf-8">
<meta name="viewport" content="initial-scale=1, maximum-scale=1, user-scalable=no, width=device-width">

.g-hed {
  	text-align: left;
  	text-transform: uppercase;
  	font-weight: bold;
  	font-size:22px; 
  	margin: 3px 0;
  }

.g-source-bold {
    text-align: left;
    font-size:10px;
    font-weight: bold; 
  }

.g-source {
    margin: 10px 0;
  }

.g-source-bold {
    text-align: left;
    font-size:10px; 
  }

.g-intro {
    font-size: 16px;
    margin: 0px 0px 10px 0px;
  }

.g-labels {
    font-family: 'Proxima-Nova', sans-serif;
    fill: white;
    font-weight: bold;
    font-size: 14px;
  }

.axis line {
    fill: none;
    stroke: #ccc;
    stroke-dasharray: 2px 3px;
    shape-rendering: crispEdges;
    stroke-width: 1px;
  }

.axis text {
    font-family: 'Proxima-Nova', sans-serif;
    font-size: 13px;
    pointer-events: none;
    fill: #7e7e7e;
  }

.y.axis text {
    text-anchor: end !important;
    font-size:14px;
    fill: #7e7e7e;
  }

.x.axis line {
    display: none;
  }

.x.axis tick:nth-child(even) {
    display: none;
  }

.domain {
    display: none;
  }

.bar:hover {
    fill: #2f5491;
  }

.bar{
    fill: #5e8dc9;
  }

.g-baseline line {
    stroke: black;
    stroke-dasharray: 0;
    stroke-width: 1px;
  }

.d3-tip {
    line-height: 1;
    font-size: 13px;
    font-family: 'Proxima-Nova', sans-serif;
    font-weight: bold;
    padding: 5px;
    background: rgba(255, 255, 255, 0.8);
    color: #000000;
    border: 1px solid #3f3f3f;
  }

</style>

var widther = window.outerWidth;

var width = widther - margin.left - margin.right,
    height = 400 - margin.top - margin.bottom;

//Parses date for correct time format
var parseDate = d3.time.format("%Y-%m").parse;

//Appends the svg to the chart-container div
var svg = d3.select(".g-chart").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 + ")");

//Creates the xScale 
var xScale = d3.scale.ordinal()
  .rangeRoundBands([0, width], .1);

//Creates the yScale
var yScale = d3.scale.linear()
  .range([height, 0]);

//Filters through ordinal axis
var ticks = xScale.domain().filter(function(d,i){ return !(i%12); } );

//Defines the y axis styles
var yAxis = d3.svg.axis()
	.scale(yScale)
  .tickSize(-width)
  .tickPadding(8)
	.orient("left");

//Loads the data
d3.csv("linetemplate.csv", ready);

function ready(err, data) {

if (err) throw "error loading data";
  console.log("hello");

//FORMAT data
	data.forEach(function(d) {
		d.num = +d.num;
    d.date = parseDate(d.date);
	});

console.log(data);

//Sets min and max on xScale
  var xMin = d3.min(data, function(d) { return d.date;});
  var xMax = d3.max(data, function(d) { return d.date;});

//Defines the x axis styles
  var xAxis = d3.svg.axis()
    .scale(xScale)
    .tickSize(height)
    .tickPadding(15)
    .orient("bottom")
    .tickValues([xMin, xMax])
    .tickFormat(d3.time.format("%b %Y"));

//Appends chart headline
	d3.select(".g-hed").text("Chart headline goes here");

//Appends chart intro text
  d3.select(".g-intro").text("Chart intro text goes here. Write a short sentence describing the chart here.");

//tooltips
  var tip = d3.tip()
    .attr('class', 'd3-tip')
    .offset([-5, 0])
    .html(function(d) {
      return "<strong>" + d.num + "</strong>";
    })

svg.call(tip);

//Sets scale domains
  xScale.domain(data.map(function(d) { return d.date; }));
  yScale.domain([0, d3.max(data, function(d) { return d.num; })]);

//Appends the y axis
	var yAxisGroup = svg.append("g")
		.attr("class", "y axis")
		.call(yAxis)
    .selectAll("g")
    .classed("g-baseline", function(d) { return d == 0 });

//Appends the x axis		
	var xAxisGroup = svg.append("g")
		.attr("class", "x axis")
		.call(xAxis);

//Binds the data to the bars      
  var bar = svg.selectAll(".bar")
    .data(data)
    .enter()
    .append("rect")
    .attr("class", "bar")
    .attr("x", function(d) { return xScale(d.date); })
    .attr("width", xScale.rangeBand())
    .attr("y", function(d) { return yScale(d.num); })
    .attr("height", function(d) { return height - yScale(d.num); })
    .on('mouseover', tip.show)
    .on('mouseout', tip.hide);

//Appends chart source
	d3.select(".g-source-bold")
    .text("SOURCE: ")
    .attr("class", "g-source-bold");

d3.select(".g-source-reg")
    .text("Chart source info goes here")
    .attr("class", "g-source-reg");

//RESPONSIVENESS
  d3.select(window).on("resize", resized);

function resized() {

//new margin
    var newMargin = {top: 10, right: 40, bottom: 20, left: 50};

//Get the width of the window
    var w = d3.select(".g-chart").node().clientWidth;
    console.log("resized", w);

//Change the width of the svg
    d3.select("svg")
      .attr("width", w);

//Change the xScale
    xScale
      .rangeRoundBands([0, w - newMargin.right]);

//Update the bars
    d3.selectAll("rect")
      .attr("x", function(d) { return xScale(d.date); })
      .attr("width", xScale.rangeBand()/1.25)

//Updates xAxis
    xAxisGroup
      .call(xAxis);

//Updates ticks
    xAxis
      .scale(xScale)
      .ticks(numTicks(w));

//Updates yAxis  
    yAxis
      .tickSize(w - newMargin.right)
  };

}

//Determines number of ticks base on width
function numTicks(widther) {
  if (widther <= 400) {
    return 4
    console.log("return 4")
  }
  else {
    return 4
    console.log("return 5")
  }
}

</script>

Modified http://labratrevenge.com/d3-tip/javascripts/d3.tip.v0.6.3.js to a secure url

https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.min.js

https://labratrevenge.com/d3-tip/javascripts/d3.tip.v0.6.3.js