You need to look at the assign function:
http://cran.r-project.org/doc/FAQ/R-FAQ.html#How-can-I-turn-a-string-into-a-variable_003f
(... and in addition to R FAQ 7.21 also perhaps read the rest of the R
FAQ.)
There are a ton of very similar questions in the r-help archives, so
you could also try
RSiteSearch("read.table paste")
-- David
On Nov 19, 2009, at 12:29 PM, Thomas Jackson wrote:
Dear R Users,
I am trying to read in a series of csv files which vary by the
letter on the end of he file name. When I input what seems to be a
logical for loop I get an error message that doesn't make sense to me.
for(i in 1:12){ paste("G&P", LETTERS[i],sep='') <-read.csv(paste("/
Users/thomasjackson/Data/GEP&CO/GEP&CO",LETTERS[i],"/
HPLC_",LETTERS[i],"12.csv",sep=''), header=T, sep=',')}
Error in paste("G&P", LETTERS[i], sep = "") <- read.csv(paste("/
Users/thomasjackson/Data/GEP&CO/GEP&CO", :
target of assignment expands to non-language object
For example the first file name is HPLC_A12.csv in the folder GEP&COA
David Winsemius, MD
Heritage Laboratories
West Hartford, CT
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