center.fd | R Documentation |
Subtract the pointwise mean from each of the functions in a functional data object; that is, to center them on the mean function.
center.fd(fdobj)
fdobj |
a functional data object to be centered. |
a functional data object whose mean is zero.
mean.fd
,
sum.fd
,
stddev.fd
,
std.fd
daytime <- (1:365)-0.5 daybasis <- create.fourier.basis(c(0,365), 365) harmLcoef <- c(0,(2*pi/365)^2,0) harmLfd <- vec2Lfd(harmLcoef, c(0,365)) templambda <- 0.01 tempfdPar <- fdPar(daybasis, harmLfd, templambda) # do not run on CRAN because it takes too long. tempfd <- smooth.basis(daytime, CanadianWeather$dailyAv[,,"Temperature.C"], tempfdPar)$fd tempctrfd <- center.fd(tempfd) plot(tempctrfd, xlab="Day", ylab="deg. C", main = "Centered temperature curves")
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