Subject: concatenating dataframes (PR#381)
Date: Tue 21 Dec 1999 - 08:44:05 EST
The following work if y is an ordinary matrix but not a dataframe:
tt <- NULL
y <- data.frame(1:20,1:20)
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.
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