I'm attempting to study Kernel PCA in a dataset and I have been trying the Kernlab package for R. The package has a method called "kpca". It works pretty well when I use it in R shell calling each command at a time. However, to make the process automatic, I created a script to do the same, but it raises errors. Here follow the script:
library("kernlab")
f1 <- read.table("dataset.txt")
kpc <- kpca(~., data=f1, kernel="rbfdot", kpar=list(sigma=0.2), features=5)
And the errors:
Error in km - colSums(km)/m : could not find function "loadMethod"
Calls: kpca ... kpca -> .local -> kpca -> kpca -> .local -> t -> t -> -
Execution halted
It seems that it cannot load a function or something related, but googleing that error doesn't give me anything. Does anybody know what is this?