Bug when embedding Matplotlib 0.91.2 in PyQt 4.4.2

Hi all,

First, I would like to congratulate you for your work on Matplotlib. I am using Matplotlib widgets in all my current projects, embedded in PyQt graphical user interfaces.

As you may know, PyQt 4.4.2 has been released a few days ago.
And I found out a performance bug when embedding a Matplotlib 0.91.2 canvas in a PyQt 4.4.2 object: the pan/zoom feature is very slow (with PyQt 4.3.3, and the exact same scripts, pan/zoom is real-time).

I am posting this in PyQt mailing-list too, but I guess that you could have more ideas on that matter (Matplotlib widgets may not be used very often in PyQt).

Thanks for your help!
Regards,
Pierre Raybaut

Hi Pierre,

First, I would like to congratulate you for your work on Matplotlib. I
am using Matplotlib widgets in all my current projects, embedded in PyQt
graphical user interfaces.

As you may know, PyQt 4.4.2 has been released a few days ago.
And I found out a performance bug when embedding a Matplotlib 0.91.2
canvas in a PyQt 4.4.2 object: the pan/zoom feature is very slow (with
PyQt 4.3.3, and the exact same scripts, pan/zoom is real-time).

Would it be possible to post some benchmarks, something a little more
concrete, like specifically what calls are taking the most time, and how they
compare for the different versions of PyQt?

I am posting this in PyQt mailing-list too, but I guess that you could
have more ideas on that matter (Matplotlib widgets may not be used very
often in PyQt).

Please don't do that. Its not fair to the people who volunteer their time on
open source projects to try to draw so many people into the problem before
the problem is understood.

Cheers,
Darren

ยทยทยท

On Friday 30 May 2008 5:21:01 pm Pierre Raybaut wrote: