[R-SIG-Finance] R.e. Non-financial "seasonality"

[icosa atropa]

Is there any useful information in the 59-61 Hz range?  If not,
excising everything from that frequency range using a bandstop filter
should give minimal distortion to the rest of the spectrum.

Another question relevant to smoothing is: how much power is in the
noise spikes relevant to the signal of interest?

best,
xian

> spikes are not necessarily AT 60 Hz, but vary between 59 and 61.  Is
> there a good way to filter out these spikes?
> Walt Keneipp
> wkeneipp at stormproducts.com

-- 
Far better an approximate answer to the right question, which is often
vague, than the exact answer to the wrong question, which can always
be made precise -- j.w. tukey