Because there is none.
Something on my TODO list is to add the functionality to display labels in the middle between 2 major ticks. This is a typical use case for date time intervals.Question #2:
The friedberg example shows a hack, that sets the length of the major ticks to 0 and enlarges the medium ticks to fake being major ticks. But this works for scales only, where the ticks are set manually from the application - in case of zooming in/out the ticks are calculated from the scale engine.
So the friedberg example is probably not the best code to learn about scales in Qwt.
Uwe
Bookmarks