fda.usc (version 0.9.4)

create.fdata.basis: Create Basis Set for Functional Data of fdata class

Description

Compute basis for functional data.

Usage

create.fdata.basis(fdataobj,l=1:5,maxl=max(l),type.basis="bspline",
rangeval=fdataobj$rangeval,class.out="fd")
create.pc.basis(fdataobj,l=1:5)

Arguments

fdataobj

fdata class object.

l

Vector of basis index.

maxl

maximum number of basis

type.basis

Type of basis (see create.basis function).

rangeval

A vector of length 2 giving the lower and upper limits of the range of permissible values for the function argument.

class.out

=="fd" basisfd class, =="fdata" fdata class.

Value

• basis
  basis
• x
  Is true the value of the rotated data (the centred data multiplied by the rotation matrix) is returned
• mean
  functional mean of fdataobj
• type
  type of basis

References

Ramsay, James O. and Silverman, Bernard W. (2006), Functional Data Analysis, 2nd ed., Springer, New York.

See Also

See Also as create.basis and pc.fdata.

Examples

data(tecator)
basis.pc<-create.pc.basis(tecator$absorp.fdata,c(1,4,5))
plot(basis.pc$basis)

basis.fd<-create.fdata.basis(tecator$absorp.fdata,c(1,4,5),
type.basis="fourier")
plot(basis.pc$basis)
basis.fdata<-create.fdata.basis(tecator$absorp.fdata,c(1,4,5),
type.basis="fourier",class.out="fdata")
plot(basis.fd,col=2,lty=1)
lines(basis.fdata,col=3,lty=1)