How about 

Dat1 <- lapply(subset(Dat, Dat!="P"), My_Function)

--Mark




________________________________
 From: Christofer Bogaso <bogaso.christofer@gmail.com>
To: r-help@r-project.org 
Sent: Friday, December 14, 2012 1:58 PM
Subject: [R] A question on list and lapply
 
Dear all, let say I have following list:

Dat <- vector("list", length = 26)
names(Dat) <- LETTERS
My_Function <- function(x) return(rnorm(5))
Dat1 <- lapply(Dat, My_Function)


However I want to apply my function 'My_Function' for all elements of 'Dat' except the elements having 'names(Dat) == "P"'. Here I have specified the name "P" just for illustration however this will be some name specified by user.

Is there any direct way to achieve this, using 'lapply'?

Thanks for your help.

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