On 05-12-2012, at 03:37, Gyanendra Pokharel wrote:
> Hi group,
>
> I imported 16 data frames using the function "list.files"
>
> temp <- list.files(path="...........")
> myfiles = lapply(temp, read.table,sep = "")
>
> Now I have 16 data set imported in R window.
>
> I want to combine them by row and tried some thing like (Here I am
> considering only 20 columns)
>
> for(i in 1:16){
> data<- cbind(myfiles[[i]][,1:20])
>
> }
>
>
> but it returns only first data set. I can combine them using
>
> data <- cbind(myfiles[[1]][,1:20],myfiles[[2]][1:20],...............)
>
> But I want in a loop so that I can make the efficient code.
Slightly guessing what you want.
Toy example
set.seed(123)
mydf <- lapply(1:4,FUN=function(dname) data.frame(x=round(runif(10),2),
y=round(runif(10),2),z=round(runif(10),2)))
mydf
do.call(cbind,lapply(mydf, function(df) df[,1:2]))
Berend
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