text: (function() {
  
  // Chart design based on the recommendations of Stephen Few. Implementation
  // based on the work of Clint Ivy, Jamie Love, and Jason Davies.
  // http://projects.instantcognition.com/protovis/bulletchart/
  d3.bullet = function() {
    var orient = "left",
        reverse = false,
        duration = 0,
        ranges = bulletRanges,
        markers = bulletMarkers,
        measures = bulletMeasures,
        width = 380,
        height = 30,
        tickFormat = null;
  
    // For each small multiple
    function bullet(g) {
      g.each(function(d, i) {
        var rangez = ranges.call(this, d, i).slice().sort(d3.descending),
            markerz = markers.call(this, d, i).slice().sort(d3.descending),
            measurez = measures.call(this, d, i).slice().sort(d3.descending),
            g = d3.select(this);
  
        // Compute the new x-scale
        var x1 = d3.scale.linear()
            .domain([0, Math.max(rangez[0], markerz[0], measurez[0])])
            .range(reverse ? [width, 0] : [0, width]);
  
        // Retrieve the old x-scale, if this is an update
        var x0 = this.__chart__ || d3.scale.linear()
            .domain([0, Infinity])
            .range(x1.range());
  
        // Stash the new scale
        this.__chart__ = x1;
  
        // Derive width-scales from the x-scales
        var w0 = bulletWidth(x0),
            w1 = bulletWidth(x1);
  
        // Update the range rects
        var range = g.selectAll("rect.range")
            .data(rangez);
  
        range.enter().append("rect")
            .attr("class", function(d, i) { return "range s" + i; })
            .attr("width", w0)
            .attr("height", height)
            .attr("x", reverse ? x0 : 0)
          .transition()
            .duration(duration)
            .attr("width", w1)
            .attr("x", reverse ? x1 : 0);
  
        range.transition()
            .duration(duration)
            .attr("x", reverse ? x1 : 0)
            .attr("width", w1)
            .attr("height", height);
  
        // Update the measure rects
        var measure = g.selectAll("rect.measure")
            .data(measurez);
  
        measure.enter().append("rect")
            .attr("class", function(d, i) { return "measure s" + i; })
            .attr("width", w0)
            .attr("height", height / 3)
            .attr("x", reverse ? x0 : 0)
            .attr("y", height / 3)
          .transition()
            .duration(duration)
            .attr("width", w1)
            .attr("x", reverse ? x1 : 0);
  
        measure.transition()
            .duration(duration)
            .attr("width", w1)
            .attr("height", height / 3)
            .attr("x", reverse ? x1 : 0)
            .attr("y", height / 3);
  
        // Update the marker lines
        var marker = g.selectAll("line.marker")
            .data(markerz);
  
        marker.enter().append("line")
            .attr("class", "marker")
            .attr("x1", x0)
            .attr("x2", x0)
            .attr("y1", height / 6)
            .attr("y2", height * 5 / 6)
          .transition()
            .duration(duration)
            .attr("x1", x1)
            .attr("x2", x1);
  
        marker.transition()
            .duration(duration)
            .attr("x1", x1)
            .attr("x2", x1)
            .attr("y1", height / 6)
            .attr("y2", height * 5 / 6);
  
        // Compute the tick format
        var format = tickFormat || x1.tickFormat(8);
  
        // Update the tick groups
        var tick = g.selectAll("g.tick")
            .data(x1.ticks(8), function(d) {
              return this.textContent || format(d);
            });
  
        // Initialize the ticks with the old scale, x0
        var tickEnter = tick.enter().append("g")
            .attr("class", "tick")
            .attr("transform", bulletTranslate(x0))
            .style("opacity", 1e-6);
  
        tickEnter.append("line")
            .attr("y1", height)
            .attr("y2", height * 7 / 6);
  
        tickEnter.append("text")
            .attr("text-anchor", "middle")
            .attr("dy", "1em")
            .attr("y", height * 7 / 6)
            .text(format);
  
        // Transition the entering ticks to the new scale, x1
        tickEnter.transition()
            .duration(duration)
            .attr("transform", bulletTranslate(x1))
            .style("opacity", 1);
  
        // Transition the updating ticks to the new scale, x1
        var tickUpdate = tick.transition()
            .duration(duration)
            .attr("transform", bulletTranslate(x1))
            .style("opacity", 1);
  
        tickUpdate.select("line")
            .attr("y1", height)
            .attr("y2", height * 7 / 6);
  
        tickUpdate.select("text")
            .attr("y", height * 7 / 6);
  
        // Transition the exiting ticks to the new scale, x1
        tick.exit().transition()
            .duration(duration)
            .attr("transform", bulletTranslate(x1))
            .style("opacity", 1e-6)
            .remove();
      });
      d3.timer.flush();
    }
  
    // left, right, top, bottom
    bullet.orient = function(x) {
      if (!arguments.length) return orient;
      orient = x;
      reverse = orient == "right" || orient == "bottom";
      return bullet;
    };
  
    // ranges (bad, satisfactory, good)
    bullet.ranges = function(x) {
      if (!arguments.length) return ranges;
      ranges = x;
      return bullet;
    };
  
    // markers (previous, goal)
    bullet.markers = function(x) {
      if (!arguments.length) return markers;
      markers = x;
      return bullet;
    };
  
    // measures (actual, forecast)
    bullet.measures = function(x) {
      if (!arguments.length) return measures;
      measures = x;
      return bullet;
    };
  
    bullet.width = function(x) {
      if (!arguments.length) return width;
      width = x;
      return bullet;
    };
  
    bullet.height = function(x) {
      if (!arguments.length) return height;
      height = x;
      return bullet;
    };
  
    bullet.tickFormat = function(x) {
      if (!arguments.length) return tickFormat;
      tickFormat = x;
      return bullet;
    };
  
    bullet.duration = function(x) {
      if (!arguments.length) return duration;
      duration = x;
      return bullet;
    };
  
    return bullet;
  };
  
  function bulletRanges(d) {
    return d.ranges;
  }
  
  function bulletMarkers(d) {
    return d.markers;
  }
  
  function bulletMeasures(d) {
    return d.measures;
  }
  
  function bulletTranslate(x) {
    return function(d) {
      return "translate(" + x(d) + ",0)";
    };
  }
  
  function bulletWidth(x) {
    var x0 = x(0);
    return function(d) {
      return Math.abs(x(d) - x0);
    };
  }
  
  })();