Creating fts object in R

Question

I\'m aware that this question already exists here: Creating an fts object in R with ftsa to functional data analysis of a time series

but reproducible example and answer

Answer 1

There are different packages that define a class "fts" and you are using the wrong one.

library(ftsa)

#see the link in the documentation for the correct constructor
fts1 <- rainbow::fts(x = data$date, y = as.matrix(data[,-1]))

#apparently colnames must be numbers of the given frequency
#this appears to be at least an documentation bug
#but I know nothing about this kind of analysis
colnames(fts1$y) <- seq_along(colnames(fts1$y))

ftsm(fts1, order=3)
#Functional time series model
#
#Call: ftsm(y = fts1, order = 3) 
#
#Main effects: Mean 
#Order of interaction: 3
#   y: as.matrix(data[, -1]) 
#   x: data$date