[R] spectra processing

[Kurt Sys]

Hello,

I'm just wondering: are there any spectra processing packages
available? I found some packages which can be used for image analysis,
transformations etc. The most important thing for me to do is (local)
background substraction. The 'rolling ball' or 'rolling circle' is
quite often used, and, as far is I know, it behaves very well, but
other methods would be ok too (as long as they perform well).

tnx,
Kurt.