Re: [R] compute new variable

From: Chuck Cleland <ccleland_at_optonline.net>
Date: Fri, 08 Jun 2007 12:56:02 -0400

Matthias von Rad wrote:
> Hello,
> maybe my question ist stupid, but I would like to calculate a new
> variable for all cases in my dataset. Inspired by the dialog in Rcmdr
> I tried
> Datenmatrix$cohigha<- with(Datenmatrix,mean (c(M2ORG, M5ORG, M8ORG,
> M11ORG), na.rm = TRUE)
> as output I got the same number for all my cases (possibly the
> overallmean of all cases), instead of a mean for each case.
> Can you help me with this problem?

Datenmatrix$cohigha <- rowMeans(Datenmatrix[,c("M2ORG", "M5ORG", "M8ORG", "M11ORG")], na.rm=TRUE)

> regards
> Matthias
>
> ______________________________________________
> R-help_at_stat.math.ethz.ch 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.

-- 
Chuck Cleland, Ph.D.
NDRI, Inc.
71 West 23rd Street, 8th floor
New York, NY 10010
tel: (212) 845-4495 (Tu, Th)
tel: (732) 512-0171 (M, W, F)
fax: (917) 438-0894

______________________________________________
R-help_at_stat.math.ethz.ch 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.
Received on Fri 08 Jun 2007 - 17:00:34 GMT

Archive maintained by Robert King, hosted by the discipline of statistics at the University of Newcastle, Australia.
Archive generated by hypermail 2.2.0, at Fri 08 Jun 2007 - 17:32:01 GMT.

Mailing list information is available at https://stat.ethz.ch/mailman/listinfo/r-help. Please read the posting guide before posting to the list.