Qt4 Performance Issues

Hi,
I'm trying to use the qt4agg backend and running into performance issues (both using matplotlib interactively and in a program). The performance of qtagg and gtkagg backends are fine and drawing a zoom rectangle, for example, is smooth. With qt4, however, dragging and zooming are very choppy. Is this is known bug and is there any way to work around this?
Thanks,
David

Hi David,

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On Wednesday 20 December 2006 12:17, David Levitan wrote:

I'm trying to use the qt4agg backend and running into performance issues
(both using matplotlib interactively and in a program). The performance
of qtagg and gtkagg backends are fine and drawing a zoom rectangle, for
example, is smooth. With qt4, however, dragging and zooming are very
choppy. Is this is known bug and is there any way to work around this?

It may be an issue with your installation of qt4/PyQt4. Panning and zooming
are both quite fast for me. I'm using qt-4.2.2 and PyQt-4.1 on a 64bit gentoo
linux machine.

Darren