Thanks so much! This is so useful for black and white printing. One tip to users is to change the gcf color (color background) to white before applying the hatch. it seems once the hatch is applied the figure isn't able to be modified further.
Thank you so much for this submission! It took me 15 minutes of playing around with it to figure it out (it wasn't immediately clear to me that TopTickPositions were the positions on the original axis and that TopTickLabels were the associated values on the new axis). But it works great! I really appreciate it - thanks!!