Change (basis) representation of a tf-object

Apply the representation of one tf-object to another; i.e. re-express it in the other's basis, on its grid, etc.
Useful for making different functional data objects compatible so they can be combined, compared or computed with.

Usage

tf_rebase(object, basis_from, arg = tf_arg(basis_from), ...)

# S3 method for class 'tfd'
tf_rebase(object, basis_from, arg = tf_arg(basis_from), ...)

# S3 method for class 'tfb'
tf_rebase(object, basis_from, arg = tf_arg(basis_from), ...)

Arguments

object: a tf object whose representation should be changed.
basis_from: the tf object with the desired basis, arg, evaluator, etc.
arg: optional new arg values, defaults to those of basis_from.
...: forwarded to the tfb or tfd constructors.

Value

a tf-vector containing the data of object in the same representation as basis_from (potentially modified by the arguments given in ...).

Details

This uses double dispatch (S3) internally, so the methods defined below are themselves generics for methods tf_rebase.tfd.tfd, tf_rebase.tfd.tfb_spline, tf_rebase.tfd.tfb_fpc, tf_rebase.tfb.tfd, tf_rebase.tfb.tfb that dispatch on object_from.

Methods (by class)

tf_rebase(tfd): re-express a tfd-vector in the same representation as some other tf-vector
tf_rebase(tfb): re-express a tfb-vector in the same representation as some other tf-vector.

Examples

x <- tf_rgp(3)
xb <- tfb(x, k = 8, penalized = FALSE, verbose = FALSE)
tf_rebase(tf_rgp(3), xb)
#> tfb[3]: [0,1] -> [-1.307387,1.384965] in basis representation:
#>  using  s(arg, bs = "cr", k = 8, sp = NA)  
#> 1: ▆▆▆▆▆▆▆▆▅▅▄▄▃▂▂▁▁▁▁▁▂▃▄▄▅▆
#> 2: ▂▃▄▆▆▇█████▇▆▆▅▃▂▁▁▁▁▁▁▂▂▃
#> 3: ▆▆▆▇▇▇▇▇▇▇▆▅▄▄▃▂▂▂▂▂▂▃▃▄▄▅