Import multiple data frames and combine them using "cbind"
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