Hi [EMAIL PROTECTED] napsal dne 06.03.2008 17:41:06:
> Hi there, > > When i do > > mean(fl[1:20], na.rm=T) e.g. sum(!is.na(fl[1:20])) Regards Petr > sd(fl[1:20], na.rm=T) > > I get 20 Results, but now I'd like to know from how many numbers my mean > and sd are calculated. > > How to I use the length() for this, or is this possible? > > Because there are missing values in some, but not in all columns. So > there should be a different count of numbers. > > Thanks, > Martin > > -- > Ihr Partner für Webdesign, Webapplikationen und Webspace. > http://www.roomandspace.com/ > Martin Kaffanke +43 650 4514224 > [příloha signature.asc odstraněna uživatelem Petr PIKAL/CTCAP] > ______________________________________________ > 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.
