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@ritchieking
Created April 29, 2016 20:57
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Axis formats based on width
<!DOCTYPE html>
<meta charset="utf-8">
<style>
.axis text {
font: 10px sans-serif;
}
.axis line,
.axis path {
fill: none;
stroke: #000;
shape-rendering: crispEdges;
}
</style>
<body>
<script src="//d3js.org/d3.v3.min.js"></script>
<script src="https://d3js.org/d3-time.v0.2.min.js"></script>
<script src="https://d3js.org/d3-time-format.v0.3.min.js"></script>
<script>
Object.assign(d3, d3_time_format);
Object.assign(d3, d3_time);
var formatMillisecond = {long: ".%L", short: ".%L"},
formatSecond = {long: ":%S", short: ":%S"},
formatMinute = {long: "%I:%M", short: "%I:%M"},
formatHour = {long: "%I %p", short: "%I %p"},
formatDay = {long: "%a %d", short: "%a %d"},
formatWeek = {long: "%b %d", short: "%b %d"},
formatMonth = {long: "%B", short: "%b"},
formatYear = {long: "%Y", short: "'%y"};
function multiFormat (size) {
return function (date) {
return (d3.timeSecond(date) < date ? d3.timeFormat(formatMillisecond[size])
: d3.timeMinute(date) < date ? d3.timeFormat(formatSecond[size])
: d3.timeHour(date) < date ? d3.timeFormat(formatMinute[size])
: d3.timeDay(date) < date ? d3.timeFormat(formatHour[size])
: d3.timeMonth(date) < date ? (d3.timeWeek(date) < date ? d3.timeFormat(formatDay[size]) : d3.timeFormat(formatWeek[size]))
: d3.timeYear(date) < date ? d3.timeFormat(formatMonth[size])
: d3.timeFormat(formatYear[size]))(date);
}
}
var margin = {top: 250, right: 40, bottom: 250, left: 40},
width = 960 - margin.left - margin.right,
height = 500 - margin.top - margin.bottom;
var x = d3.time.scale()
.domain([new Date(2012, 0, 1), new Date(2013, 0, 1)])
.range([0, width]);
var xAxis = d3.svg.axis()
.scale(x)
.tickFormat(multiFormat('short'));
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 axis = svg.append("g")
.attr("class", "x axis")
.attr("transform", "translate(0," + height + ")")
.call(xAxis);
</script>
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