https://github.com/cran/ftsa
Tip revision: 592f61af0e8cfd418ea2dfc4fb50aaa23bd972cc authored by Han Lin Shang on 03 January 2019, 07:30:06 UTC
version 5.3
version 5.3
Tip revision: 592f61a
extract.x.R
extract.x <- function(data, xorder)
{
x = data$x
y = data$y
if (length(xorder) < 2) {
stop("xorder must be multiple x variable")
}
if (length(xorder) >= 2) {
index = vector(, length(xorder))
for (i in 1:length(xorder)) {
index[i] = which(as.numeric(rownames(y)) == xorder[i])
}
}
newdata = as.matrix(y[index, ])
newx = x[index]
ftsdata = fts(newx, newdata, start = as.numeric(rownames(y))[1], xname = data$xname, yname = data$yname)
rownames(ftsdata$y) = as.character(xorder)
class(ftsdata) = class(data)
return(ftsdata)
}