.x(function(d) { return WeightsDrawer.x(d.date); })
.y0(function(d) { return WeightsDrawer.y(d.y0); })
.y1(function(d) { return WeightsDrawer.y(d.y0 + d.y); });
.x(function(d) { return WeightsDrawer.x(d.date); })
.y0(function(d) { return WeightsDrawer.y(d.y0); })
.y1(function(d) { return WeightsDrawer.y(d.y0 + d.y); });