import data repeadeatly
See ?read.table for some helpful options. Also, you probably don't want to use <<- so much. <- should (almost) always be sufficient and is less likely to be the cause of strange bugs.
On Mar 28, 2008, at 3:08 AM, Henrik Kallberg wrote:
Repeadeately
Dear All!
I'm an unexperienced user of R. I'm trying to import varaibles in a
stepwise manner from a huge data set (whole genome scan data from a
case control study). I'm not sure that my code will work and I know
that the current code is not working the way I want it to work. I
would like to import data and do some calculations and then store
the results and then import a new variable and do the same
calculations again for the latter variable and so on. In the code
below there is no calculations yet (i'm just trying to solve the
import problem). Please.Can anyone give me som suggestions.
snpSelect<<- function(data, KIND, i){
rsp<<-cbind(subset(read.table(data, header = TRUE), select=KIND+i))
rsp
}
datan<-matrix(0, nrow=1574, ncol=5)
for(i in 1:(length(q))){
datan[,i]<<-snpSelect("c:/program/R/test.txt",KIND,i)
}
Best regards Henrik K?llberg
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