Hi
Sorry, as many Windows users I forgot to mention version and platform
> version
_
platform i386-pc-mingw32
arch i386
os mingw32
system i386, mingw32
status Under development (unstable)
major 2
minor 11.0
year 2009
month 10
day 10
svn rev 50027
language R
version.string R version 2.11.0 Under development (unstable) (2009-10-10
r50027)
>
In R 2.9.0 I got the same result as you, in R2.10.0 I got same result as
with R2.11.0dev In meantame I try latest R binary.
Regards
Petr
Mario Valle <mva...@cscs.ch> napsal dne 04.02.2010 09:59:59:
> Linux 2.9.0 gives:
>
> > median(df1)
> [1] 34
>
> Ever stranger...
> mario
>
> Petr PIKAL wrote:
> > During some experimentation in preparing R lessons I encountered this
> > behaviour which I can not explain fully
> >
> > mat <- matrix(1:16, 4,4)
> > df1 <- data.frame(mat)
> >
> >> mean(df1)
> > X1 X2 X3 X4
> > 2.5 6.5 10.5 14.5
> >
> > Expected, documented
> >
> >> median(df1)
> > [1] 6.5 10.5
> >
> > Rather weird, AFAIK there shall not be an issue with data frame at
least I
> > did not find any in help page. I tracked it down probably to an As.Is
> > operation with object and subsequent sorting in median.default.
> >
> > I know other (*apply) ways how to compute median for data frames so I
just
> > would like to hear an opinion about this behaviour from more
experienced
> > people.
> >
> > Thank you
> > Best regards
> >
> > Petr
> >
> > ______________________________________________
> > 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.
>
> --
> Ing. Mario Valle
> Data Analysis and Visualization Group |
http://www.cscs.ch/~mvalle
> Swiss National Supercomputing Centre (CSCS) | Tel: +41 (91)
610.82.60
> v. Cantonale Galleria 2, 6928 Manno, Switzerland | Fax: +41 (91)
610.82.82
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
