I was surprised to find that draw.horizontal line appears to be fixed to the right scale, i.e. even if you manually set the scale to left in your code, the line will not plot (or it will, but it's not visible due to being on the wrong scale).
Without resorting to graphics methods or fudging a plot, I can't see a way to simply draw a horizontal line on the left scale. Is this possible?
Thanks.
Comment