concatenating dataframes (PR#381)

Kurt Hornik
Mon, 27 Dec 1999 09:04:43 +0100

>>>>> jlindsey  writes:

> The following work if y is an ordinary matrix but not a dataframe:
> tt <- NULL
> y <- data.frame(1:20,1:20)
> rbind(tt,y)

> gives "incompatible types" error (if the dataframe contains only factor
> variables, it gives warnings but works)

> if I initialize instead with

> tt <- list()

> it gives a "missing value where logical needed" error.

I've added a line in which removes all length 0
arguments.  This solves the problems you describe and passes make check,
but I am not sure if we really want it ...

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