fds: Create functional objects

In rainbow: Bagplots, Boxplots and Rainbow Plots for Functional Data

Create functional objects

Description

The function fds is used to create general independent and identically distributed (i.i.d.) functional objects that are not ordered by time. The function fts is used to create functional time series objects. The function sfts is used to create sliced functional time series objects, where the x variable is also a time variable.

Usage

fds(x, y, xname, yname)
fts(x, y, start = 1, frequency = 1, xname, yname)
sfts(data, period = frequency(data), start = tsp(data)[1], 
     frequency = 1, xname, yname)

Arguments

x	Numeric vector of length p.
y	Matrix of size p x n representing n functions of x observed at points 1,...,p.
data	An object of class ts.
period	Time period of sliced functional data. For instance, period = 12 is a monthly data.
start	The time of the first observation. Either a single number or a vector of two integers, which specify a natural time unit and a (1-based) number of samples into the time unit. See ts for details.
frequency	The number of observations per unit of time.
xname	Character string giving name of x vector. (optional)
yname	Character string giving name of y vector. (optional)

Value

An object of class fds or fts or sfts.

Author(s)

Rob J Hyndman and Han Lin Shang

Examples

fds(x = 1:20, y = Simulationdata$y, xname = "x", yname = "Simulated value")
fts(x = 15:49, y = Australiasmoothfertility$y, xname = "Age", 
    yname = "Fertility rate")
sfts(ts(as.numeric(ElNino_OISST_region_1and2$y), frequency = 12), xname = "Month", 
     yname = "Sea surface temperature")    

rainbow documentation built on Oct. 10, 2022, 1:06 a.m.