[R] Question about subsetting data

[Moshe Olshansky]

One possibility is:

x <- ceiling((1:100)/10)
aggregate(var1,by=list(x),mean)


--- On Wed, 4/6/08, William Pepe <williampepe at hotmail.com> wrote:

> From: William Pepe <williampepe at hotmail.com>
> Subject: [R] Question about subsetting data
> To: r-help at r-project.org
> Received: Wednesday, 4 June, 2008, 10:35 AM
> I have a data set(Bill) of with 1 variable (var1), with 100
> obs that are in ascending order. I want to sample every 10
> observations and save them in 10 different groups such as
>  
>   Group1 is obs 1-10
>   Group 2 is obs-11-20
>  
> and so on.
>  
> First step is to subset them into the 10 groups, then
> calculate the mean of var1 for each of the 10 groups. Any
> help would be appreciated. Thanks.
>  
> _________________________________________________________________
> 
> 
> sh_skydrive_062008
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