[R] NA, where no NA should (could!) be!
oliver at first.in-berlin.de
Sun Dec 21 00:26:25 CET 2008
ok, I found the problem!
I now have:
res_size_by_host <- tapply( selected$size, factor(selected$host), sum)
res_size_by_host <- tapply( selected$size, selected$host, sum)
and now it works.
IMHO this is strange, because selected$host is already a factor!
I don't know, why this must be done...
...someone of the R-experts might know it...
...and may explain it...?!
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