On Aug 7, 2013, at 11:31 AM, Philipp Rath wrote:
> Hello r-community,
>
> my name is philipp and i´m studying economics at the university of bonn.
> I´m writing a paper about an experimental entry game and need help to write a
> for loop.
>
> for (i in 0:7) {
>
> data <- read.table("~/Uni/SoSe
> 13/Bachelorarbeit/entryGameAnalysis/analysis/data/23.04.13...10H/GROUP0/0/history.txt",
> sep="\t" , header=TRUE, blank.lines.skip=TRUE, strip.white = TRUE)
> data[5]
> }
>
> the goal is to read column 5 of the history.txt for GROUP0/0,
> GROUP0/1,…..GROUP0/7.
>
Something along these lines (and do note that your current arrangement would
overwrite the previous file with each iteration and executing data[5] would
have done nothing, since no assignment was made):
datalist<-list()
for (i in 0:7) {
datalist[[i]] <- read.table(file=paste0("~/Uni/SoSe
13/Bachelorarbeit/entryGameAnalysis/analysis/data/23.04.13...10H/GROUP0/",i,"/history.txt"),
sep="\t" , header=TRUE, blank.lines.skip=TRUE, strip.white = TRUE,
colClasses=c(rep(NULL,4), "character",rep(NULL,1000))
}
Using colClasses to extract only the 5th column.
--
David Winsemius
Alameda, CA, USA
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