Export data frames from list to txt file - r

Question

I have a question in exporting data frame from list into txt file. I found some solutions, but it was only for vectors. Here is one example:
dataframe1 <- data.frame(a= c(1,2,3,4,5), b= c(1,1,1,1,1))
dataframe2 <- data.frame(a= c(5,5,5), b= c(1,1,1))
mylist <- list(dataframe1, dataframe2)
I would like that the txt file looks like this:
$dataframe1
a b
1 1
2 1
3 1
4 1
5 1
$dataframe2
a b
5 1
5 1
5 1
Thank you for the help.

Answer 1

Say your list is named:
mylist<-structure(list(dataframe1 = structure(list(a = c(1, 2, 3, 4,
5), b = c(1, 1, 1, 1, 1)), .Names = c("a", "b"), row.names = c(NA,
-5L), class = "data.frame"), dataframe2 = structure(list(a = c(5,
5, 5), b = c(1, 1, 1)), .Names = c("a", "b"), row.names = c(NA,
-3L), class = "data.frame")), .Names = c("dataframe1", "dataframe2"
))
You can try:
con<-file("temp.csv",open="at")
Map(function(x,y) {cat(file=con,y,"\n");write.table(x,file=con,quote=FALSE,row.names=FALSE)},
mylist,names(mylist))
close(con)
The above will write the files on the file temp.csv. You have to give names to your list if you want it to work.
Alternatively, if you are ok with the print method, you can just redirect the standard output to a file:
sink("temp.csv")
print(mylist)
sink(NULL)