I have more 4 curves in a plot and each curve have 2000 points in them , these are from the scaled down version from my millions of points in my data, which fed trough the curve by a custom QwtData.
It seems that when i resize my plot it's sluggish. I bring my number of points down to 1000 on each curve and its acceptable but still a bit sluggish.
Now, my question is there a spot on qwtdata where i can i tweak . to note I did not reimplement the boundingRect part of QwtData. Do you guys think this will help if i will reimp this part? How often this is called when i don't do autoscaling.
I really need to go 2000 points on my curve , since i am trying to scale down large sets of data.
I have had some plots where i feed 150 curves and 32000 points each curve. I have connected my data to the curve by QwtPlotCurve::setData (const double *xData, const double *yData, int size) and this is somehow faster than my 4 curve-plot with my custom QwtData.
baray98
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