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Hi, I am extremely new to R, and was wondering if someone would be able to help me with a question regarding the expand.grid function. When I input expand.grid.rep <- function(x, n=1) do.call(expand.grid, rep(list(x),n)) expand.grid.rep(c("a", "b", "c"), 3) my output is as follows, Var1 Var2 Var3 1     a    a    a 2     b    a    a 3     c    a    a 4     a