[R] NA, where no NA should (could!) be!

[Oliver Bandel]

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...?!


Ciao,
   Oliver