mam3xs wrote:
Hi all,
I have a R code with quite a few lines. For instance
AA <- read.csv(C:\\AA.txt)
AA.diff <- diff(log(AA))
.....
....
Now I want to re-define the code with different object, like BB,
CC......ZZ(the codes are the same). Thus, I was wondering whether their is
an efficient way or automatic way to replace and generate new objects rather
than using "find and replace" function in txt/word manually....?
Defining your own functions, using lists, and lapply would work just great most
likely.
Untested, but something like should work:
#create list of all file names
files <- sapply(LETTERS, function(x) paste(x,x, sep = "", collapse = ""))
#read in the files into a list.
my.list <- lapply(files, function(x)
read.csv(paste("C:\\", x, ".txt", sep = ""))
#apply a function to each item in the list
lapply(my.list, function(x) diff(log(x)))
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