[R] tree-ring response function in R?

[Alvaro Gutierrez]

Hi,

I am looking forward if some of you could help me with this. I have been 
looking R-functions to conduct tree-ring analysis in R. I  know that exists 
a COFECHA version in R developed by C. Bigler. But I don't know if is there 
another collection of functions to do dendroclimatological analysis (such as 
response functions). Has someone developed such rutines in R ?,

thanks in advance,

Alvaro