[R] newbie questions: attached data.frames and rm()

[Alojz Loui Polic]

Hi

I'm just starting with R-plus and I have noticed
the following behaviour.

If a data.frame is attached and then removed before 
being detached, the data is still present in the 
path and can accessed. Is this expected behaviour, 
and if so why? 

Thank you 

Loui

below is sample code to show this, I'm using R-1.2.2
on Win-NT4


AA <- c(1, 1, 1, 1, 1)
BB <- c(2, 3, 2, 1, 2)
data1 <- data.frame( AA.data=AA, BB.data=BB )
ls()
attach(data1)
ls(2)

rm(data1)
ls()
ls(2)
AA.data[1]
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