Storing multiple data frames into one data structure - R

Question

Is it possible to have multiple data frames to be stored into one data structure and process it later by each data frame? i.e. example

df1 <- data.frame(c         


        

Answer 1

Lists can be used to hold almost anything, including data.frames:

## Versatility of lists
l <- list(file(), new.env(), data.frame(a=1:4))

For writing out multiple data objects stored in a list, lapply() is your friend:

ll <- list(df1=df1, df2=df2)
## Write out as *.csv files
lapply(names(ll), function(X) write.csv(ll[[X]], file=paste0(X, ".csv")))
## Save in *.Rdata files
lapply(names(ll), function(X) {
    assign(X, ll[[X]]) 
    save(list=X, file=paste0(X, ".Rdata"))
})