Hello, I'm a happy user of matplotlib. I have both a usage question and a more=20 developer oriented question. First the usage question. I have some=20 trouble using the polarplot. I routinely need to plot complex valued=20 data on a polar grid. But it seems the polar plot requires an extra step=20 where I have to compute the magnitude and phase of my data. Is there an=20 easy way around this? I would like to develop and contribute a smithchart plot routine but I'm=20 not sure what the best way would be to integrate it into=20 matplotlib.matlab. I understand I would need to create a subclass of=20 Axes for the grid but how is this then integrated into the matlab.axes=20 command? A plotsmithchart command should definately understand complex=20 valued data. A smithchart grid contains a lot of arcs, looking at how the grid is=20 implemented in PolarAxes it seems there are no circle or arc primitives.=20 Is this correct? for a brief introduction to the smith chart see: http://en.wikipedia.org/wiki/Smith_chart Best regards, J=F6rgen Stenarson