Hello.
How can I improve performance in next case:
I have big amount of plots ( f.e. near 25 ) and at each plot may be 1-4 curves with 103859 points...
I tried to develop some kind of panner but there is show bad results, there is really slow down. I have next situation now... I get all points for all curve and then with help of setAxisScale(...) show some part of all interval, but there is hard to replot all graphics when I want drag plot f.e. right , there is too slow doown. Then I think to use QwtPlotPanner, but when I look to source code I see that QwtPlotPanner do replot() and setAxisScale() too, so I thinhk it will be bad too.
So can U give me some advise?
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