From Kurt.Hornik@ci.tuwien.ac.at  Wed Aug 13 08:28:08 1997
From: Kurt.Hornik@ci.tuwien.ac.at (Kurt Hornik)
Date: Wed, 13 Aug 1997 09:28:08 +0200
Subject: R-alpha: another minor problem
Message-ID: <199708130728.JAA01062@aragorn.ci.tuwien.ac.at>

As it seems that everyone's wishes for getting bugs fixed are granted
right away, here is something that I alread mentioned once.

* It seems that S allows recycling when subscripting with logicals, but
R does not.  E.g.,

        R> x <- 1:5
        R> x
        [1] 1 2 3 4 5
        R> i <- c(F, T)
        R> x[i]
        Error: invalid subscript type
        R>

In S, this is treated as x[rep(i, length = length(x))].

* It also seems that S does not worry about excluding subscripts which
are out of bounds.  In the above, x[-6] would give x, but in R

        R> x[-6]
        Error: subscript out of bounds


-k
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R-alpha: another minor problem
Kurt Hornik