Hello,
I have a series and I need to run a Fourier Transform for that series.
I have done that using the function fft from stats package.
However I am not sure whether the result I am getting is correct or not. Seems
that the first value of the Fourier Transform list is the sum of all elements
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 v
Hello,
Can someone help me to understand the meaning of the following R line?
list(fk5 ~ .)
Thanks, Renata
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Hello,
What the tilde and dot means? I believe is something to do with formula, but
how do they work?
An example:
(fk5 ~ ., size = 10)
Do you know what the "fk5 ~ ." means?
Thank you!
Renata
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Dear all,
I am using kernlab package in R, and I have amino acid sequences with different
lenghts as input for a SVM and I need to go through this sequences using
windows (sliding or fixed) of size X.
Does anyone has any suggestions about which function I should use?
I thought I could use strin
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