https://github.com/cran/ftsa
Tip revision: bdacd962e07983b325d3672c4048f4337223e4de authored by Han Lin Shang on 09 December 2010, 00:00:00 UTC
version 2.4
version 2.4
Tip revision: bdacd96
diff.fts.R
`diff.fts` <- function (x, lag = 1, differences = 1, ...)
{
if (class(x)[1] == "fts"|class(x)[1] == "sfts"){
x$y <- t(diff(t(x$y), lag, differences, ...))
return(x)
}
else{
stop("object is not a functional time series or a sliced functional time series")
}
}