|
<!DOCTYPE html> |
|
<meta charset="utf-8"> |
|
<!-- |
|
original html from bostock #3048450, |
|
modified to show histogram data from numpy |
|
--> |
|
<style> |
|
|
|
body { |
|
font: 10px sans-serif; |
|
} |
|
|
|
.bar rect { |
|
fill: #31a354; |
|
shape-rendering: crispEdges; |
|
stroke: #a1d99b; |
|
} |
|
|
|
.bar text { |
|
fill: #fff; |
|
font-weight: bold; |
|
} |
|
|
|
.axis path, .axis line { |
|
fill: none; |
|
stroke: #000; |
|
shape-rendering: crispEdges; |
|
} |
|
|
|
.histogram-title { |
|
font-size: 2em; |
|
} |
|
|
|
</style> |
|
<body> |
|
<script src="http://d3js.org/d3.v3.min.js"></script> |
|
<script> |
|
|
|
// A formatter for counts. |
|
var formatCount = d3.format(",.0f"); |
|
|
|
var margin = {top: 10, right: 30, bottom: 30, left: 30}, |
|
width = 960 - margin.left - margin.right, |
|
height = 500 - margin.top - margin.bottom; |
|
|
|
d3.json("histo.json", function(error, histodata) { |
|
|
|
var d, data = []; |
|
|
|
// read in histogram data that was generated previously with python numpy |
|
for (i=0; i<histodata.division.length; i++) { |
|
d = []; |
|
d['x'] = parseFloat(histodata.division[i]); |
|
d['y'] = parseInt(histodata.count[i]); |
|
data.push(d); |
|
} |
|
|
|
var w = (histodata.division[histodata.division.length-1]-histodata.division[0])/10; |
|
|
|
var x = d3.scale.linear() |
|
.domain([0, d3.max(data, function(d) { return d.x; })]) |
|
.range([0, width]); |
|
|
|
var y = d3.scale.linear() |
|
.domain([0, d3.max(data, function(d) { return d.y; })]) |
|
.range([height, 0]); |
|
|
|
var xAxis = d3.svg.axis() |
|
.scale(x) |
|
.orient("bottom"); |
|
|
|
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 + ")"); |
|
|
|
var bar = svg.selectAll(".bar") |
|
.data(data) |
|
.enter().append("g") |
|
.attr("class", "bar") |
|
.attr("transform", function(d) { return "translate(" + x(d.x) + "," + y(d.y) + ")"; }); |
|
|
|
bar.append("rect") |
|
.attr("x", 1) |
|
.attr("width", x(w) - 1) |
|
.attr("height", function(d) { return height - y(d.y); }); |
|
|
|
bar.append("text") |
|
.attr("dy", ".75em") |
|
.attr("y", 6) |
|
.attr("x", x(w) / 2) |
|
.attr("text-anchor", "middle") |
|
.text(function(d) { return formatCount(d.y); }); |
|
|
|
svg.append("g") |
|
.attr("class", "x axis") |
|
.attr("transform", "translate(0," + height + ")") |
|
.call(xAxis); |
|
|
|
svg.append("text") |
|
.attr("class", "histogram-title") |
|
.attr("y", height - 80) |
|
.attr("x", width) |
|
.attr("text-anchor", "end") |
|
.text(histodata.title); |
|
}); |
|
|
|
</script> |
|
</body> |
|
</html> |
