search for: donghyun

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2009 Apr 13
2
weighted mean and by() with two index
...1.105 ....... ........... That is, the result should be tabularized. How can I get the above form directly? (I don't want to modify tmp with as.vector() and matrix() to get the result) Thank you in advance. -------------------------------------------------------------------------- Donghyun Oh CESIS, KTH -------------------------------------------------------------------------- [[alternative HTML version deleted]]