[R] sum up breaks

Ulrich Leopold uleopold at science.uva.nl
Wed Jun 26 20:21:54 CEST 2002


how can use in the function below instead of ave sum? I would like to sum up 

Pox2 <- data.frame(ave(lsk0t50$Pox2, lsk0t50$ProfN, Fun=is.na(lsk0t50$Pox2)))

Regards, Ulrich

Ulrich Leopold MSc.

Department of Physical Geography
Institute for Biodiversity and Ecosystem Dynamics
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