Dear AFNI people (and dear Paul),
I have a question concerning the Lomb-Scargle Periodogram and its AFNI implementation, namely 3dLombScargle.
The number of bins in the frequency-domain that are created by 3dLombScargle are defined by 1/T, where T is the duration or number of sampling points of the time-series (in TRs, I assume).
Is there a way to change the number of bins, like in a standard Periodogram via adjusting the nfft value? Or is that generally not possible due to the different computation of the Lomb-Scargle Periodogram, so that the number of bins is always determined by the length of the time-series?
In case it would be principally possible, is there any chance that this feature will be implemented in 3dLombScargle in the future?
One of the reasons why I am asking this is because it would be nicer to have the exact same amount of bins when comparing runs of different lengths.