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mena
1997 Oct 22
0
R-alpha: na.woes
1) hist() does not take NA's. Incompatible with Splus, probably just a
bug?
2) I do wish we could somehow get rid of the misfeatures of indexing
with logical NA's:
> table(juul$menarche,juul$tanner)
I II III IV V
No 221 43 32 14 2
Yes 1 1 5 26 202
> juul$menarche=="Yes"&juul$tanner=="I",]
...and you find yourself with a listing of 477 cases, of which the 476
are NA-filled. To find the interesting case, you need to go through
the foll...