This simple bar chart is constructed from a TSV file storing the frequency of letters in the English language. The chart employs conventional margins and a number of D3 features:
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April 13, 2018 07:24
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Bar Chart Demo
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license: gpl-3.0 |
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letter | frequency | |
---|---|---|
A | .08167 | |
B | .01492 | |
C | .02782 | |
D | .04253 | |
E | .12702 | |
F | .02288 | |
G | .02015 | |
H | .06094 | |
I | .06966 | |
J | .00153 | |
K | .00772 | |
L | .04025 | |
M | .02406 | |
N | .06749 | |
O | .07507 | |
P | .01929 | |
Q | .00095 | |
R | .05987 | |
S | .06327 | |
T | .09056 | |
U | .02758 | |
V | .00978 | |
W | .02360 | |
X | .00150 | |
Y | .01974 | |
Z | .00074 |
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<!DOCTYPE html> | |
<meta charset="utf-8"> | |
<style> | |
.axis--x path { | |
display: none; | |
} | |
</style> | |
<svg width="960" height="500"></svg> | |
<script src="https://d3js.org/d3.v4.min.js"></script> | |
<script> | |
var svg = d3.select("svg"), | |
margin = {top: 20, right: 20, bottom: 30, left: 40}, | |
width = +svg.attr("width") - margin.left - margin.right, | |
height = +svg.attr("height") - margin.top - margin.bottom; | |
var x = d3.scaleBand().rangeRound([0, width]).padding(0.1), | |
y = d3.scaleLinear().rangeRound([height, 0]); | |
var color = d3.scaleOrdinal(d3.schemeCategory20); | |
var g = svg.append("g") | |
.attr("transform", "translate(" + margin.left + "," + margin.top + ")"); | |
d3.tsv("data.tsv", function(error, data) { | |
if (error) throw error; | |
data.forEach(function(d){ | |
d.frequency = +d.frequency; | |
}) | |
x.domain(data.map(function(d) { return d.letter; })); | |
y.domain([0, d3.max(data, function(d) { return d.frequency; })]); | |
g.append("g") | |
.attr("class", "axis axis--x") | |
.attr("transform", "translate(0," + height + ")") | |
.call(d3.axisBottom(x)); | |
g.append("g") | |
.attr("class", "axis axis--y") | |
.call(d3.axisLeft(y).ticks(10, "%")) | |
.append("text") | |
.attr("transform", "rotate(-90)") | |
.attr("y", 6) | |
.attr("dy", "0.71em") | |
.attr("text-anchor", "end") | |
.text("Frequency"); | |
g.selectAll(".bar") | |
.data(data) | |
.enter().append("rect") | |
.attr("class", "bar") | |
.attr("x", function(d) { return x(d.letter); }) | |
.attr("y", function(d) { return y(d.frequency); }) | |
.attr("width", x.bandwidth()) | |
.attr("height", function(d) { return height - y(d.frequency);}) | |
.attr("fill", function(d, i) { return color(i) }); | |
}); | |
</script> |
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