hi,
im not able to set data in QwtPolarCurve. rather, im a little bit confused to use setData function in QwtPolarCurve. in QwtPlot, its easy to set data as there r enough overloading functions to set data. but the only option available in QwtPolarCurve to set data is setData(const QwtData &);. i referred demo example where RoseData and SpiralData curves r drawn. but i am not able to understand QwtData interfacing and not able to apply that derivation for my own derived class.

my requirement is, i want to set my own curve containing set of radius and azimuth values. how can i set data like
myPolarPlotCurve->setData(radius,azimuth). i tried to use QwtData interface, but im not succeeding, rather i am confused to how to assign set of radius and azimuth values.

im putting problem in code form here.

Qt Code: 
  1. myPolarCurve->setData(MyQwtData(azAngle,radius,numPoints));
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where MyQwtData is derived from QwtData.

will u pls suggest how can i derive QwtData class to plot my own set of azimuth and radius values on QwtPolarCurve. pls put sample code, that will be of great help to me.