These axes are styled in the manner of ggplot2, a plotting system for R. Two d3.svg.axis instances are used: one for the gray grid lines, and one for the black ticks and labels below the bottom of the chart area. The exit selection of a data-join is used to customize the appearance of minor ticks.
forked from mbostock's block: ggplot2-Style Axis
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<meta charset="utf-8">
<style>
body {
font: 10px sans-serif;
shape-rendering: crispEdges;
}
.grid-background {
fill: white;
}
.grid line {
stroke: black;
}
.grid .minor line {
stroke-opacity: .5;
}
.grid text {
display: none;
}
.axis line {
stroke: #000;
}
.axis path,
.grid path {
display: none;
}
</style>
<body>
<script src="//d3js.org/d3.v3.min.js"></script>
<script>
var margin = {top: 100, right: 10, bottom: 380, left: 10},
width = 960 - margin.right - margin.left,
height = 500 - margin.top - margin.bottom;
var x = d3.scale.linear()
.domain([0, 10000])
.range([0, width]);
var y = d3.scale.linear()
.range([0, height]);
var svg = d3.select("body").append("svg")
.attr("width", width + margin.right + margin.left)
.attr("height", height + margin.top + margin.bottom)
.append("g")
.attr("transform", "translate(" + margin.left + "," + margin.top + ")");
svg.append("rect")
.attr("class", "grid-background")
.attr("width", width)
.attr("height", height);
svg.append("g")
.attr("class", "grid")
.attr("transform", "translate(0," + height + ")")
.call(d3.svg.axis().scale(x).ticks(80).tickSize(-height))
.selectAll(".tick")
.data(x.ticks(60), function(d) { return d; })
.exit()
.classed("minor", true);
svg.append("g")
.attr("class", "axis")
.attr("transform", "translate(0," + height + ")")
.call(d3.svg.axis().scale(x).ticks(20));
</script>
https://d3js.org/d3.v3.min.js