| license: gpl-3.0 |
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:
| 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 |
| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <style> | |
| .bar { | |
| fill: steelblue; | |
| } | |
| .bar:hover { | |
| fill: brown; | |
| } | |
| .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 xScale = d3.scaleBand().rangeRound([0, width]).padding(0.1), | |
| yScale = d3.scaleLinear().rangeRound([height, 0]); | |
| var g = svg.append("g") | |
| .attr("transform", "translate(" + margin.left + "," + margin.top + ")"); | |
| d3.tsv("data.tsv", function(d) { | |
| d.frequency = +d.frequency; | |
| return d; | |
| }, function(error, data) { | |
| if (error) throw error; | |
| xScale.domain(data.map(function(d) { return d.letter; })); | |
| yScale.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(xScale)); | |
| g.append("g") | |
| .attr("class", "axis axis--y") | |
| .call(d3.axisLeft(yScale).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 xScale(d.letter); }) | |
| .attr("y", function(d) { return yScale(d.frequency); }) | |
| .attr("width", xScale.bandwidth()) | |
| .attr("height", function(d) { return height - yScale(d.frequency); }); | |
| }); | |
| </script> |