actsasgeek/bar_chart.html

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

#foo {
  width: 1200px;
  height: 400px;
}

.bar {
  fill: steelblue;
}

.bar:hover {
  fill: brown;
}

.axis {
  font: 10px sans-serif;
}

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

.x.axis path {
  display: none;
}

</style>
<body>
<div id="foo"></div>
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.js"></script>
<script>
var data = [
  {"letter": "A",	"frequency": .08167},
  {"letter": "B",	"frequency": .01492},
  {"letter": "C",	"frequency": .02782},
  {"letter": "D",	"frequency": .04253},
  {"letter": "E",	"frequency": .12702},
  {"letter": "F",	"frequency": .02288},
  {"letter": "G",	"frequency": .02015},
  {"letter": "H",	"frequency": .06094},
  {"letter": "I",	"frequency": .06966},
  {"letter": "J",	"frequency": .00153},
  {"letter": "K",	"frequency": .00772},
  {"letter": "L",	"frequency": .04025},
  {"letter": "M",	"frequency": .02406},
  {"letter": "N",	"frequency": .06749},
  {"letter": "O",	"frequency": .07507},
  {"letter": "P",	"frequency": .01929},
  {"letter": "Q",	"frequency": .00095},
  {"letter": "R",	"frequency": .05987},
  {"letter": "S",	"frequency": .06327},
  {"letter": "T",	"frequency": .09056},
  {"letter": "U",	"frequency": .02758},
  {"letter": "V",	"frequency": .00978},
  {"letter": "W",	"frequency": .02360},
  {"letter": "X",	"frequency": .00150},
  {"letter": "Y",	"frequency": .01974},
  {"letter": "Z", "frequency":.00074}];

var foo = d3.select( "#foo");
var margin = {top: 20, right: 20, bottom: 30, left: 40},
    width = parseInt( foo.style( "width")) - margin.left - margin.right,
    height = parseInt( foo.style( "height"))- margin.top - margin.bottom;

var x = (new d3.scale.ordinal())
    .rangeRoundBands([0, width], .1);

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

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

var yAxis = (new d3.svg.axis())
    .scale(y)
    .orient("left")
    .ticks(10, "%");

var svg = d3.select("#foo").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 + ")");

x.domain(data.map(function(d) { return d.letter; }));
y.domain([0, d3.max(data, function(d) { return d.frequency; })]);

 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("Frequency");

svg.selectAll(".bar")
    .data(data)
  .enter().append("rect")
    .attr("class", "bar")
    .attr("x", function(d) { return x(d.letter); })
    .attr("width", x.rangeBand())
    .attr("y", function(d) { return y(d.frequency); })
    .attr("height", function(d) { return height - y(d.frequency); });

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

	#foo {
	width: 1200px;
	height: 400px;
	}

	.bar {
	fill: steelblue;
	}

	.bar:hover {
	fill: brown;
	}

	.axis {
	font: 10px sans-serif;
	}

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

	.x.axis path {
	display: none;
	}

	</style>
	<body>
	<div id="foo"></div>
	<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.js"></script>
	<script>
	var data = [
	{"letter": "A", "frequency": .08167},
	{"letter": "B", "frequency": .01492},
	{"letter": "C", "frequency": .02782},
	{"letter": "D", "frequency": .04253},
	{"letter": "E", "frequency": .12702},
	{"letter": "F", "frequency": .02288},
	{"letter": "G", "frequency": .02015},
	{"letter": "H", "frequency": .06094},
	{"letter": "I", "frequency": .06966},
	{"letter": "J", "frequency": .00153},
	{"letter": "K", "frequency": .00772},
	{"letter": "L", "frequency": .04025},
	{"letter": "M", "frequency": .02406},
	{"letter": "N", "frequency": .06749},
	{"letter": "O", "frequency": .07507},
	{"letter": "P", "frequency": .01929},
	{"letter": "Q", "frequency": .00095},
	{"letter": "R", "frequency": .05987},
	{"letter": "S", "frequency": .06327},
	{"letter": "T", "frequency": .09056},
	{"letter": "U", "frequency": .02758},
	{"letter": "V", "frequency": .00978},
	{"letter": "W", "frequency": .02360},
	{"letter": "X", "frequency": .00150},
	{"letter": "Y", "frequency": .01974},
	{"letter": "Z", "frequency":.00074}];

	var foo = d3.select( "#foo");
	var margin = {top: 20, right: 20, bottom: 30, left: 40},
	width = parseInt( foo.style( "width")) - margin.left - margin.right,
	height = parseInt( foo.style( "height"))- margin.top - margin.bottom;

	var x = (new d3.scale.ordinal())
	.rangeRoundBands([0, width], .1);

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

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

	var yAxis = (new d3.svg.axis())
	.scale(y)
	.orient("left")
	.ticks(10, "%");

	var svg = d3.select("#foo").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 + ")");

	x.domain(data.map(function(d) { return d.letter; }));
	y.domain([0, d3.max(data, function(d) { return d.frequency; })]);

	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("Frequency");

	svg.selectAll(".bar")
	.data(data)
	.enter().append("rect")
	.attr("class", "bar")
	.attr("x", function(d) { return x(d.letter); })
	.attr("width", x.rangeBand())
	.attr("y", function(d) { return y(d.frequency); })
	.attr("height", function(d) { return height - y(d.frequency); });

	</script>
	</body>
	</html>