Hey, I want to compute means and standard errors as two tables like this:
se<-function(x)sqrt(var(x)/length(x)) object1<-as.data.frame.table(tapply(Data[Year=="1999"],na.rm=T,list(Group[Year=="1999"],Season[Year=="1999"]),mean)) object2<-as.data.frame.table(tapply(Data[Year=="1999"],na.rm=T,list(Group[Year=="1999"],Season[Year=="1999"]),se)) Part of the data is labeled as NA, therfore the na.rm=T. I succeed in creating the table for the means, but not for the standard errors. The message is "Error in FUN(X[[1L]], ...) : unused argument(s) (na.rm = TRUE)". Does anyone have an idea how to get the standard error computed? Thx! -- View this message in context: http://www.nabble.com/Problem-with-NA-data-when-computing-standard-error-tp16569057p16569057.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
