Quote Originally Posted by gyre View Post
What if I was just changing the axis scale upon some timer event ...
I don't know enough about your application, but in general it should be enough to assign your new points to the curve and do a replot. The autoscaler will do the rest.

If you store your data in your own type of container I recommend to write your own QwtData bridge. This way you don't need to copy anything and a single replot every couple of seconds will do what you want.

Uwe