R help - Aug 2006 - summary statistics on an entire data frame

Hello,
 
I am wondering how to compute functions like mean(), sd(), etc. on a data
frame, but instead of getting a vector with the summary stat calculated
individually for each column, get one number for the whole data set.  I have
noticed that coercing the frame to a time series (ts) gives the desired
result for certain functions, but not others.  mean() gives a single numeric
result, but sd() still gives standard deviations per column.  I have noticed
that when my data is coerced to a ts, it actually gets the class
c("mts",
ts") instead of just "ts", which may or may not have something to
do with
the problem.
 
Thanks for any help you can give!

	[[alternative HTML version deleted]]

Hi
data frame is list so

mean(unlist(DF)) or sd(unlist(df))

shall do what you want if I understood correctly.

HTH
Petr


On 10 Aug 2006 at 11:10, Patrick Aber wrote:

From:           	"Patrick Aber" <paber at tower-research.com>
To:             	<r-help at stat.math.ethz.ch>
Date sent:      	Thu, 10 Aug 2006 11:10:35 -0400
Subject:        	[R] summary statistics on an entire data frame
> Hello,
> 
> I am wondering how to compute functions like mean(), sd(), etc. on a
> data frame, but instead of getting a vector with the summary stat
> calculated individually for each column, get one number for the whole
> data set.  I have noticed that coercing the frame to a time series
> (ts) gives the desired result for certain functions, but not others. 
> mean() gives a single numeric result, but sd() still gives standard
> deviations per column.  I have noticed that when my data is coerced to
> a ts, it actually gets the class c("mts", ts") instead of
just "ts",
> which may or may not have something to do with the problem.
> 
> Thanks for any help you can give!
> 
>  [[alternative HTML version deleted]]
> 
> ______________________________________________
> R-help at stat.math.ethz.ch mailing list
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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.
Petr Pikal
petr.pikal at precheza.cz