Center Functional Data
center.fd |
Language Reference for FDA Library
|
Center Functional Data
DESCRIPTION:
Subtract the pointwise mean from each of the functions
in a functional data object; that is, to center them on the mean function.
USAGE:
center.fd(fdobj)
REQUIRED ARGUMENTS:
- fdobj
-
a functional data object to be centered.
VALUE:
a functional data object whose mean is zero.
SEE ALSO:
mean.fd, sum.fd, stddev.fd, std.fd
EXAMPLES:
# ----- make temperature fd object, don't smooth
tempfd <- data2fd(tempmat, monthtime, monthbasisfd)
# ---------- center and plot the temperature data
tempcenterfd <- center.fd(tempfd)
par(mfrow=c(1,1),pty="m")
plot(tempcenterfd, xlab="Months", ylab="Deg. C",
main="Centered Temperature")