funData2fd function

Convert a funData object to fd

This function converts an object of class funData to an object of class fd (from package fda). It heavily builds on the function Data2fd from the fda package. The fd representation assumes a basis representation for the observed functions and therefore implicitly smoothes the data. In funData objects, the data is saved in 'raw' format.

funData2fd(object, ...)

Arguments

• object: A funData object
• ...: Other parameters passed to Data2fd.

Returns

An object of class fd.

Warning

This function works only for funData objects on one-dimensional domains.

Examples

# Install / load package fda before running the examples
library("fda")

# from Data2fd help
daybasis <- create.fourier.basis(c(0, 365), nbasis=65)
# funData object with temperature
tempFun <- funData(day.5, t(CanadianWeather$dailyAv[, , "Temperature.C"]))
# convert to fd
tempfd <- funData2fd(tempFun, daybasis)

# plot to compare
par(mfrow = c(1,2))
plot(tempFun, main = "funData object (raw data)")
plot(tempfd, main = "fd object (smoothed)")

See Also

funData, fd, Data2fd, fd2funData