QwtPlotCurve: maximum number of points ?

[OverTheOCean]

Hi,

l 'm using QwtPlotCurve to plot spectrum graph with 500 000 points, there is some inconsistencies that l don't have with 100 000 points...whatr is the maximum number of points ? can we increase it ?

regards,

Michael

[OverTheOCean]

l'm using QWT6 ...

[Uwe]

I guess there are limits according to MAX_INT/SHORT or MAX_UINT/USHORT - don't know, but there are some QPolygonF on the way. There might also be some limitations, when the points are copied by Qt to the native graphics system.

For 500000 points don't forget to implement different levels of detail. You can use QwtWeedingCurveFitter to calculate them.

Uwe