R help - Jan 2010 - Functional data analysis - problem with functional linear regression

Hi all,

I'm trying to perform a functional linear regression with functional
response (comprising 14 coordinates) and 4 scalar covariates.

When I create a list containing the scalar covariates (with 14 replications
each), I keep getting the following message:

[1] "Vector in XFDLIST[[ 1 ]] has wrong length."
[1] "Matrix in XFDLIST[[ 1 ]] has more than one column."
[1] "Vector in XFDLIST[[ 2 ]] has wrong length."
[1] "Matrix in XFDLIST[[ 2 ]] has more than one column."
[1] "Vector in XFDLIST[[ 3 ]] has wrong length."
[1] "Matrix in XFDLIST[[ 3 ]] has more than one column."
[1] "Vector in XFDLIST[[ 4 ]] has wrong length."
[1] "Matrix in XFDLIST[[ 4 ]] has more than one column."
Error in fRegress.fdPar(PPIfdPar, predictor, betalist) : 
  problem with xfdlist

So in contrast to what is advised in the R FDA manual, I reduce my scalar
covariate matrices to column vectors with 88 rows (for 88 indepedent
observations), each. This message pops up:

[1] "Vector in XFDLIST[[ 1 ]] has wrong length."
[1] "Vector in XFDLIST[[ 2 ]] has wrong length."
[1] "Vector in XFDLIST[[ 3 ]] has wrong length."
[1] "Vector in XFDLIST[[ 4 ]] has wrong length."
Error in fRegress.fdPar(PPIfdPar, predictor, betalist) : 
  problem with xfdlist

Can anyone offer any solutions?

Many thanks in advance!

Ben Cheah



     
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