I suspected that the graph issues might be involved with some display
resolution issues. So then if a spike appears and disappears at some
point in time, does that mean that in the original data there was a
combination of spike and no-spike data and the sub-sampling first picks
one and then the other? But does that mean that the standard deviation
values are calculated from the sub-sampled values rather than the
original data?
Thanks,
Ed
Mark Sims wrote:
When you are viewing a time interval that is longer than one second per screen pixel, the program must sub-sample the data. Every second the screen is redrawn with a new set of samples. Also the plots are rescaled according to the data being plotted (if auto-scaling is turned on). With very noisy data, like the raw oscillator plot, you see the effects of what amounts to a new data set every second. Turning on display filtering (F D command) helps smooth out the changes (but can hide very short disturbances).
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