| inprod_mfd_diag {funcharts} | R Documentation |
Inner product of two multivariate functional data objects, for each observation
Description
Inner product of two multivariate functional data objects, for each observation
Usage
inprod_mfd_diag(mfdobj1, mfdobj2 = NULL)
Arguments
mfdobj1 |
A multivariate functional data object of class |
mfdobj2 |
A multivariate functional data object of class |
Value
It calculates the inner product of two
multivariate functional data objects.
The main function inprod of the package fda
calculates inner products among
all possible couples of observations.
This means that, if mfdobj1 has n1 observations
and mfdobj2 has n2 observations,
then for each variable n1 X n2 inner products are calculated.
However, often one is interested only in calculating
the n inner products
between the n observations of mfdobj1 and
the corresponding n
observations of mfdobj2. This function provides
this "diagonal" inner products only,
saving a lot of computation with respect to using
fda::inprod and then extracting the
diagonal elements.
Note that the code of this function calls a modified version
of fda::inprod().
Examples
mfdobj <- data_sim_mfd()
inprod_mfd_diag(mfdobj)