Oliver Bandel wrote:
Hello,
ok, I found the problem!
I now have:
res_size_by_host <- tapply( selected$size, factor(selected$host), sum)
instead of
res_size_by_host <- tapply( selected$size, selected$host, sum)
and now it works.
IMHO this is strange, because selected$host is already a factor!
I don't know, why this must be done...
...someone of the R-experts might know it...
...and may explain it...?!
I already told you: You have empty levels in selected$host. Look at the
example I showed you.
--
O__ ---- Peter Dalgaard Øster Farimagsgade 5, Entr.B
c/ /'_ --- Dept. of Biostatistics PO Box 2099, 1014 Cph. K
(*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918
~~~~~~~~~~ - (p.dalga...@biostat.ku.dk) FAX: (+45) 35327907
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