d3 axis labeling

Question

How do I add text labels to axes in d3?

For instance, I have a simple line graph with an x and y axis.

On my x-axis, I have ticks from 1 to 10. I want the wo

Answer 1

If you work in d3.v4, as suggested, you can use this instance offering everything you need.

You might just want to replace the X-axis data by your "days" but remember to parse string values correctly and not apply concatenate.

parseTime might as well do the trick for days scaling with a date format ?

d3.json("data.json", function(error, data) {
if (error) throw error;

data.forEach(function(d) {
  d.year = parseTime(d.year);
  d.value = +d.value;
});

x.domain(d3.extent(data, function(d) { return d.year; }));
y.domain([d3.min(data, function(d) { return d.value; }) / 1.005, d3.max(data, function(d) { return d.value; }) * 1.005]);

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(6).tickFormat(function(d) { return parseInt(d / 1000) + "k"; }))
  .append("text")
    .attr("class", "axis-title")
    .attr("transform", "rotate(-90)")
    .attr("y", 6)
    .attr("dy", ".71em")
    .style("text-anchor", "end")
    .attr("fill", "#5D6971")
    .text("Population)");

fiddle with global css / js