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import_subjects
2011 Apr 07
2
replace an expression with its value, or read macros
I know my subject line seems odd, but I want to replace an expression—such as a variable—with its value. For example, I want to paste() some strings together, assign the result to a variable s, then use the value of s as a variable to hold another value. Something like this:
import_subjects <- function (start, iterations) {
for (i in 1:iterations) { # iterate from start to end
s <- paste("s", i, sep="") # make the data.frame's name
fn <- paste(i, ".txt", sep="") # make the filename
s <- read.delim(fn, header = FALSE) # now put i...