gistfile1.txt

//create the bins
while (min < this.visibleTimeExtent[1]) {
  res_stops[min] = 0;
  min = min+step;
}
res_stops[this.visibleTimeExtent[1]] = 0;

//fill the bins
for (time in this.timeHash) {
  for (stop in res_stops) {
    if (time > prev && time <= stop) {
      var val = res_stops[stop];
      res_stops[stop] = parseInt(val) + parseInt(this.timeHash[time].length);
    } 
    prev = stop;
  }
}

//hash
hash = res_stops;