I developed a wireless antenna pattern viewer that plots points from 0-360 degrees in rectangular form and in polar form. We noticed that the performance of the polar plot is much slower than the rectangular plot. Displaying, re-sizing and showing/hiding points in the rectangular plot is nearly instantaneous. With the polar plot, every action takes 5+ seconds to respond.

Does this sound normal? Does anyone have any suggestions to improve the performance of the polar plot?

I'm running with Solaris 9 on a SUN E3000 server with multiple 496 MHz cpu’s.

QT version:
qt4.4.0
qwt-5.1.1
qwtPolar-0.0.2

Thanks,