Is it wise to use GraphicsView for simple plot ?

Hi guys,

I wanna make an application in QtJambi that works with graphs. But unfortunately there's no QWT for QtJambi (as far as I know). So my question is this: Is it wise to use GraphicsView to make a simple graph or will the painting on QWidget suffice ? (If I'm getting this right in GraphicsView I would have to make an QLineF object for every two points I wanna connect, right ?)

If the plot is very simple, I'd use QWidget with QPainterPath. If it's more complex then QGraphicsView might prove better.

Thanks for recomendations.

I've got another question concerning transformations. That's so freakin' crazy chapter. :(I could read it again and again and still get very few from it.
When I draw a graph (suppose it's a constant function for now; in my case the signal is almost constant having very slight oscilations) and I start to scale it using scale() in y direction it start's to slowly come out of view (it's moving upwards). So I would assume scaling is not the same as zooming. And the question is then: How can zoom it in without the graph coming out of view ? (I need to scale it in y direction in order to emphasize the slight oscilation for better view; one could say the unit of lenght on y axis is smaller(after scaling it) then on the x axis)
It would help to say that before I draw anything I use setWindow(0, -height()/2, width(), height()) to set the origin of logical coordinates to be in the middle of height of the screen (y) and on the left side (it's a time series therefore x is not assumed to be negative; that's why it's on the left)
If one could explain the difference between the window-viewport and the worldMatrix() transformations I wouldn't mind at all. ;)

I know it's a lot to answer if you feel like you know something more to any above mentioned please post a reply I would be so greatfull.


Thanks in advance. (I'll provide additional info if needed, just to get the answers :D)