https://github.com/cran/pracma
Tip revision: a850b1ad48fcaac7a21cb289147c932e23b23acb authored by HwB on 15 July 2011, 00:00:00 UTC
version 0.7-3
version 0.7-3
Tip revision: a850b1a
ifft.Rd
\name{ifft}
\alias{ifft}
\title{
Inverse Fast Fourier Transformation
}
\description{
Performs the inverse Fast Fourier Transform.
}
\usage{
ifft(x)
}
\arguments{
\item{x}{a real or complex vector}
}
\details{
Returns the value of the normalized discrete, univariate, inverse Fast
Fourier Transform of the values in \code{x}.
}
\value{
Real or complex vector of the same length.
}
\note{
Almost an alias for \code{fft(x, inverse=TRUE)}, but dividing by
\code{length(x)}.
}
\seealso{
\code{\link{fft}}
}
\examples{
x <- c(1, 2, 3, 4)
(y <- fft(x))
ifft(x)
ifft(y)
}
\keyword{ array }