Hi all, Can anyone please explain the following results (why does median() work here but not mean())? Is there a fix or work around for this?
Thanks, Dan > by(urpdata[,2],urpdata[,12],mean,na.rm=TRUE) Error in FUN(X[[1L]], ...) : could not find function "FUN" > by(urpdata[,2],urpdata[,12],median,na.rm=TRUE) urpdata[, 12]: post [1] 64 ------------------------------------------------------------------------------------------------------------------------------------ urpdata[, 12]: pre [1] 83 ______________________________________________ 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.
