I have a small question that could be obvious for many of you, but not for me...

Once you have your data inherited from QwtData
(e.g. in my case I have float numbers)

How do you pass it to setData (or setRawData in my case)?

Here the definitions of setData and setRawData:
(From qwtplotcurve manual)

Qt Code: 
  1. void QwtPlotCurve::setData	(	const double * 	xData, const double * 	yData, int 	size	  )
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Qt Code: 
  1. void QwtPlotCurve::setRawData	(	const double * 	xData, const double * 	yData, int 	size	  )
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I do not see the link in between my YourData (derived from QwtData) and how to "link" it to my QwtPlot...

Thank you...