kencrocken/d3_histogram.html

## d3_histogram.html
<!DOCTYPE html>
<meta charset="utf-8">
<style>

.bar {
  fill: black;
}

.bar:hover{
  fill: firebrick;
}
.axis {
  font: 10px sans-serif;
}

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

.x.axis path {
  display: none;
}

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

var margin = {top: 20, right: 20, bottom: 250, left: 75},
    width = 960 - margin.left - margin.right,
    height = 700 - margin.top - margin.bottom;

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

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

var color = d3.scale.linear()
    .domain([0,35,50,100,200])
    .range(["black","maroon","darkred","firebrick","red"])
    .interpolate(d3.interpolateLab);

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

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

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 + ")");

d3.csv("senders.csv", type, function(error, data) {
  x.domain(data.map(function(d) { return d.senders; }));
  y.domain([0, d3.max(data, function(d) { return d.Freq; })]);

  svg.append("g")
      .attr("class", "x axis")
      .attr("transform", "translate(0," + height + ")")
      .call(xAxis)
      .selectAll("text")
          .style("text-anchor", "end")
          .attr("dx", "-.8em")
          .attr("dy", ".15em")
          .attr("transform", function(d) {
              return "rotate(-90)"
              });

  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.senders); })
      .attr("width", x.rangeBand())
      .attr("y", function(d) { return y(d.Freq); })
      .attr("height", function(d) { return height - y(d.Freq); })
      // .style("fill", function(d) { return "rgb(0, 0, " + (d.Freq) + ")"; });
      .style("fill", function(d) { return color(d.Freq); });

});

function type(d) {
  d.Freq = +d.Freq;
  return d;
}

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

	.bar {
	fill: black;
	}

	.bar:hover{
	fill: firebrick;
	}
	.axis {
	font: 10px sans-serif;
	}

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

	.x.axis path {
	display: none;
	}

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

	var margin = {top: 20, right: 20, bottom: 250, left: 75},
	width = 960 - margin.left - margin.right,
	height = 700 - margin.top - margin.bottom;

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

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

	var color = d3.scale.linear()
	.domain([0,35,50,100,200])
	.range(["black","maroon","darkred","firebrick","red"])
	.interpolate(d3.interpolateLab);

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

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

	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 + ")");

	d3.csv("senders.csv", type, function(error, data) {
	x.domain(data.map(function(d) { return d.senders; }));
	y.domain([0, d3.max(data, function(d) { return d.Freq; })]);

	svg.append("g")
	.attr("class", "x axis")
	.attr("transform", "translate(0," + height + ")")
	.call(xAxis)
	.selectAll("text")
	.style("text-anchor", "end")
	.attr("dx", "-.8em")
	.attr("dy", ".15em")
	.attr("transform", function(d) {
	return "rotate(-90)"
	});

	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.senders); })
	.attr("width", x.rangeBand())
	.attr("y", function(d) { return y(d.Freq); })
	.attr("height", function(d) { return height - y(d.Freq); })
	// .style("fill", function(d) { return "rgb(0, 0, " + (d.Freq) + ")"; });
	.style("fill", function(d) { return color(d.Freq); });

	});

	function type(d) {
	d.Freq = +d.Freq;
	return d;
	}

	</script>