[R] looping problem

[Rui Barradas]

Hello,

If what you want is to combine the files into one data.frame then there 
are 2 things you should see:

1) You create a variable named 'temp' and don't ever use it.
2) You never combine the data.frames you read in.

Try instead the following.

temp <- data.frame()
for(i in 1:22) {
     infile<-paste("chr",i,"/Z-score.imputed",sep="")
     psT<-read.table(infile,header=T,as.is=T,sep="\t")
     temp <- rbind(temp, psT)
}

str(temp)  # to see what you have

Hope this helps,

Rui Barradas



Em 01-02-2017 17:25, greg holly escreveu:
> Hi all;
>
> I have 22 directories named chr1, chr2,....,chr22. Each directory has a
> file named "Z-score.imputed". I would like to combine  Z-score.imputed
> files into one. I wrote the following loop but did not get any results.
> Your helps are highly appreciated.
>
> regards,
>
> Greg
>
> temp<-c()
>
> for(i in 1:22) {
> infile<-paste("chr",i,"/Z-score.imputed",sep="")
> psT<-read.table(as.character(infile),header=T,as.is=T,sep="\t")
> ps<-psT[psT$Var>0.6,]
> ratio=nrow(ps)/nrow(psT)
> print(ratio)
> }
>
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