How do I tabulate across an entire R data frame?

Question

I\'ve got a data frame containing, say, the columns v1, v2, ..., v30 which contain the same factor variables, although the levels are different from column to c

Answer 1

One approach is

library(plyr)
llply(.data=df, .fun=table)

Answer 2

Here is one approach to do this

table(unlist(df))