Hi all, I am a newbie to R. Here I have one question regarding to time
series analysis:
I have a multivariate time series object, I need to perform analysis (such
as Fourier transform) to each variate. Suppose I have more than ten
thousands variates, how could I effectively process that?

PS: My procedure requires the input feature must has a class of "ts". I
tried the "for" loop, but it is really time consuming. I also checked the
"apply" function, but it seems doesn't work for time-series object.

Thanks in advance!

Eric

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