Sorry to repost again my problem.
I have a fitted curve (the attribute of the curve is setted to Fitted).
I suppose that in this way Qwt compute for me the interpolated points.
well, if it so, I would use these interpolated points, in order to do other calculations.
I use this code
dSolar[11] is simply a QwtPlotCurve.Qt Code:
QwtSpline sp; sp= t->spline(); qDebug()<<"draw,spline..."<<sp.points();To copy to clipboard, switch view to plain text mode
Why I get an empty QPolygonF?
Helps appreciated
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