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2008 Nov 09
1
attr.all.equal() and all.equal(attributes(), attributes())
Dear All!
If I try to compare the attributes of two
objects, I find a surprising behaviour of
attr.all.equal(). With identical attributes I
receive the answert NULL. If the attributes
differ, the answer is as expecxted and differences are shown.
all.equal(attributes(), attributes()) instead
returns TRUE, if attributes are equal.
See example:
v <- 1:5
attr(v, 'testattribute') <- 'testattribute v'
v_c <- v
attributes(v)
$testattribute
[1] "testattribute v"
attributes(v_c)
$tes...