[R] Header of dataframe

[Petr Pikal]

Hi


On 26 Oct 2006 at 13:52, Mihai Nica wrote:

Date sent:      	Thu, 26 Oct 2006 13:52:11 -0700 (PDT)
From:           	Mihai Nica <mihainica at yahoo.com>
To:             	Benjamin Dickgiesser <dickgiesser at gmail.com>,
	r-help at stat.math.ethz.ch
Subject:        	Re: [R] Header of dataframe

> names(temp)[1]="a"

Isn't it changing name of first column? I suspect, that Benjamin 
speaks about column of row names which I believe cannot have itself a 
name.

Petr


> 
> see: ?names
> 
> did you really created that function :-)?
> 
> Mihai Nica
> 170 East Griffith St. G5
> Jackson, MS 39201
> 601-914-0361
> 
> ----- Original Message ----
> From: Benjamin Dickgiesser <dickgiesser at gmail.com>
> To: r-help at stat.math.ethz.ch
> Sent: Thursday, October 26, 2006 12:08:08 PM
> Subject: [R] Header of dataframe
> 
> Hi
> I am fairly new to R and I would appreciate some help to hopefully a
> trivial problem.
> 
> I created a function:
> 
> summary.aggregate <- function(y, ...)
> {
>     temp.mean     <- aggregate(y, FUN=mean, ...)
>     temp.sd          <- aggregate(y, FUN=sd, ...)
>     temp.length <- aggregate(y, FUN=length, ...)
>     temp <-
>     data.frame(cbind(mean=temp.mean$x,stdev=temp.sd$x,n=temp.length$x)
>     )
> }
> 
> this outputs e.g.:
> 
>       mean    stdev  n
> 1 645.6125 65.94129 60
> 2 655.2121 70.64094 60
> 3 633.3161 80.48620 60
> 4 650.3897 77.59191 60
> 5 630.4955 84.98888 60
> 6 656.2608 66.16100 60
> 7 666.1775 74.39796 60
> 8 663.1543 71.10769 60
> 
> Is there an easy way to add a column name to the first column?
> 
> Thank you,
> Benjamin
> 
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> 
> 
> 
> 
> 
> 
>  [[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