is it posible to invert the axes?

[jbca]

I'm new to Qt and qwt, so sorry if I make a silly question. I've look at the manuals, but haven't found an answer to my question which is:

Can you invert the direction of an axe? That is, say you have a distance-time plot. Instead of having the time increased from the bottom to the top, I would like the time to increase from the top to the bottom, and the distance axe to be located at the top of the plot. The later I now how to do, but to change the direction of the y-axe have no idea...

Best regards.

P.D. the attached image shows what I'm trying to do.