Bar Chart With Negative Values

Rendering of mbostock's Bar Chart with Negative Values II with d3 v4. Text-rendering by way of HarryStevens' Positive-Negative Bar Chart.

<!DOCTYPE html>
<meta charset="utf-8">
<style>
h1, h2 {
  font-family: "Lato", "Open Sans", "sans-serif";
  margin: 0px;
  padding: 0px;
}

.text-things {
  margin-bottom: 4px;
}

.bar--positive {
  fill: steelblue;
}

.bar--negative {
  fill: brown;
}

.value {
    font-size: 10px;
}

.axis text {
  font: 10px sans-serif;
}

.axis path,
.axis line {
  fill: none;
  stroke: #000;
  shape-rendering: crispEdges;
}
</style>

<div class="text-things">
    <h1>US Weekly Oil and Gas Rig Count</h1>
    <h2>Week of December 8, 2017</h2>    
</div>

var svg = d3.select("svg"),
    margin = {top: 30, right: 20, bottom: 40, left: 30},
    width = +svg.attr("width") - margin.left - margin.right,
    height = +svg.attr("height") - margin.top - margin.bottom;

var x = d3.scaleLinear()
          .range([0, width]);

var y = d3.scaleBand()
          .rangeRound([0, height])
          .padding(0.1);

var g = svg.append("g")
           .attr("transform", "translate(" + margin.left + "," + margin.top + ")");

d3.csv("rig_count_changes.csv", type, function(error, data) {
    if (error) throw errror;

x.domain(d3.extent(data, function(d) { return d.change; })).nice();
    y.domain(data.map(function(d) { return d.formation;}));

g.append("g")
        .attr("class", "axis axis-x")
        .attr("transform", "translate(0," + height + ")")
        .call(d3.axisBottom(x).ticks(6));
    
    var tickNegative = g.append("g")
        .attr("class", "axis axis--y")
        .attr("transform", "translate(" + x(0) + ",0)")
        .call(d3.axisLeft(y))
      .selectAll(".tick")
      .filter(function(d, i) { return data[i].change < 0; });
    
    tickNegative.select("line")
        .attr("x2", 6);
    
    tickNegative.select("text")
        .attr("x", 9)
        .style("text-anchor", "start");
    
    g.selectAll(".bar")
        .data(data)
        .enter().append("rect")
          .attr("class", function(d) { return "bar bar--" + (d.change < 0 ? "negative" : "positive"); })
          .attr("x", function(d) { return x(Math.min(0, d.change)); })
          .attr("y", function(d) { return y(d.formation); })
          .attr("width", function(d) { return Math.abs(x(d.change) - x(0)); })
          .attr("height", y.bandwidth());

/*
  text idea from: https://blockbuilder.org/HarryStevens/f1e0de06f1e3f014e9233b80e3514849
*/
    g.selectAll(".value")
        .data(data)
        .enter().append("text")
		  .attr("class", "value")
		  .attr("x", function(d){
		    if (d.change < 0){
                return (x(d.change * -1) - x(0)) > 20 ? x(d.change) + 2 : x(d.change) - 1;
                } else {
                    return (x(d.change) - x(0)) > 20 ? x(d.change) - 2 : x(d.change) + 1;
                    }})
          .attr("y", function(d){ return y(d.formation); })
		  .attr("dy", y.bandwidth() - 4)
		  .attr("text-anchor", function(d){
              if (d.change < 0){
                  return (x(d.change * -1) - x(0)) > 20 ? "start" : "end";
                  } else {
                      return (x(d.change) - x(0)) > 20 ? "end" : "start";
                      }})
          .style("fill", function(d){
              if (d.change < 0){
                  return (x(d.change * -1) - x(0)) > 20 ? "#fff" : "#3a403d";
                  } else {
                      return (x(d.change) - x(0)) > 20 ? "#fff" : "#3a403d";
                      }})
          .text(function(d){ return d.change; });

})

function type(d) {
  d.change = +d.change;
  return d;
}
</script>

https://d3js.org/d3.v4.min.js