Hello,

Also note that the index to datalist should be i + 1, 0 is not an allowed index number.


datalist[[i + 1]] <- read.table(...)

Hope this helps,

Rui Barradas

Em 07-08-2013 20:10, David Winsemius escreveu:

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.


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