Hi all, I am plying around with fft function from the stats package. Running the example that is listed in the documentation:
x <- 1:4 fft(x) #output 1 fft(fft(x), inverse = TRUE)/length(x) #output 2 I was expecting that output 1 and two were the same but I get: > fft(x) [1] 10+0i -2+2i -2+0i -2-2i > ft(fft(x), inverse = TRUE)/length(x) [1] 1+0i 2+0i 3+0i 4+0i Am I doing something wrong or is there a bug somewhere? Regards, Filippo [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.