odd behaviour of identical

x = 1:10
y = 1:10

all.equal(x,y)

identical(x,y)

y[11] = 11L
y = y[1:10]

all.equal(x,y)

identical(x,y)

given what ?identical says, i find the following odd:

x = 1:10
y = 1:10

all.equal(x,y)
[1] TRUE
identical(x,y)
[1] TRUE

y[11] = 11
y = y[1:10]

all.equal(x,y)
[1] TRUE
identical(x,y)
[1] FALSE

y
[1] 1 2 3 4 5 6 7 8 9 10
length(y)
[1] 10


looks like a bug.

platform       i686-pc-linux-gnu
arch           i686
os             linux-gnu
system         i686, linux-gnu
status
major          2
minor          7.0
year           2008
month          04
day            22
svn rev        45424
language       R
version.string R version 2.7.0 (2008-04-22)


vQ

--
-------------------------------------------------------------------------------
Wacek Kusnierczyk, MD PhD

Email: waku at idi.ntnu.no
Phone: +47 73591875, +47 72574609

Department of Computer and Information Science (IDI)
Faculty of Information Technology, Mathematics and Electrical Engineering (IME)
Norwegian University of Science and Technology (NTNU)
Sem Saelands vei 7, 7491 Trondheim, Norway
Room itv303

Bioinformatics & Gene Regulation Group
Department of Cancer Research and Molecular Medicine (IKM)
Faculty of Medicine (DMF)
Norwegian University of Science and Technology (NTNU)
Laboratory Center, Erling Skjalgsons gt. 1, 7030 Trondheim, Norway
Room 231.05.060