Displaying 2 results from an estimated 2 matches for "omega_j".
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omega_t
2003 Mar 11
3
fft help
Hi R-users:
I want to know if there is an easy way to obtain a Fourier Transform form
a vector or an array (just like fft does), but with a more density base.
I mean, if I have a vector of 512 of length, I want the Fourier
Transform to
be 1024, or 2048, etc, in length (de u domain). Or should I modify the
fft C code to do that?
If I want to modify the precision of the fft function, which
2008 Jul 30
2
FFT - (STATS) - is this correct?
Hello,
I have calculated the fourier transform of the series enclosed at the end of this message, by doing:
library(stats)
x <- readLines("file1.txt")
x.num <- as.numeric(x)
ft.x.num <- fft(x.num)
My question is: why is the first value (Real) of ft.x.num that big? (954.833870) all the other values are much smaller. Am I doing something wrong?
Could you please help me to