I have been reading qwt oscilloscope example. It seems to me that it is given as demo. What I am looking for is the way how signal plotting is implemented.
What basically is missing is triggering. The signal is plotted at time frame I guess that is qwtInterval (MinValue, MaxValue) is used to plot signal.
When, the new interval is instigated, the previous values are deleted, and the signal starts plotting from beginning.
The problem is how to implement a kind of internal triggering which will synchronise plot with all previous plots. I mean the signal plot to be stand still.
Is that possible? How that will reflect on performance, because there will be no for SignalData::clearStaleValues( double limit ), and memory requirements might be higher?