Hi [EMAIL PROTECTED] napsal dne 05.10.2007 13:24:06:
> > Dear list, > > I would like to calculate the trimmed mean for some subsets within a > data.frame (data). The list has already been very helpful, and I have > managed calculating the standard mean for the "Intensity" column based > on the "Name" column using > > > avgs <-aggregate(data$Intensity, by = list(data$Name), mean) Arguments to function are set like this avgs <-aggregate(data$Intensity, by = list(data$Name), mean, trim = 0.1) Regards Petr > > > but I cannot include the argument trim to mean() > > > avgs <-aggregate(data$Intensidad, by = list(data$Name), mean > (trim=0.1)) > Error in mean.default(trim = 0.1) : argument "x" is missing, with no > default > > avgs <-aggregate(data$Intensity, by = list(data$Name), mean > (data$Intensity, trim=0.1)) > Error in FUN(X[[1]], ...) : argument "INDEX" is missing, with no > default > > What is the "INDEX" argument I am missing? > > Thanks in advance, > > David > > ______________________________________________ > 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. ______________________________________________ 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.
