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@mbostock

mbostock/.block

Last active Feb 9, 2016
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Superscript Format II
license: gpl-3.0
<!DOCTYPE html>
<meta charset="utf-8">
<style>
.axis path,
.axis line {
fill: none;
stroke: #000;
shape-rendering: crispEdges;
}
.axis text {
font: 13px "helvetica neue";
}
.axis tspan {
font-size: 9px;
}
</style>
<body>
<script src="//d3js.org/d3.v3.min.js"></script>
<script>
var margin = {top: 250, right: 20, bottom: 250, left: 20},
width = 960 - margin.left - margin.right,
height = 500 - margin.top - margin.bottom;
var x = d3.scale.log()
.domain([1e-4, 1e4])
.range([0, width]);
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 + ")");
svg.append("g")
.attr("class", "x axis")
.attr("transform", "translate(0," + height + ")")
.call(xAxis)
.selectAll(".tick text")
.text(null)
.filter(powerOfTen)
.text(10)
.append("tspan")
.attr("dy", "-.7em")
.text(function(d) { return Math.round(Math.log(d) / Math.LN10); });
function powerOfTen(d) {
return d / Math.pow(10, Math.ceil(Math.log(d) / Math.LN10 - 1e-12)) === 1;
}
</script>
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