Yes, or

 tapply(x$val, x$label, summary)[[1]]

for the first class.

On 25/10/2007, Bernd Jagla <baj2107@columbia.edu> wrote:
>
> Wow, that easy...
> And how can get only the values for a specific class?
>
> Like tapply(x$val, x$label, ?echo?)$class1
>
> What should echo be?
>
> Thanks,
> B
>
> |-----Original Message-----
> |From: Henrique Dallazuanna [mailto:wwwhsd@gmail.com]
> |Sent: Thursday, October 25, 2007 1:15 PM
> |To: Bernd Jagla
> |Cc: r-help@r-project.org
> |Subject: Re: [R] data frame usage
> |
> |Hi,
> |
> |tapply(x$val, x$label, summary)
> |
> |
> |
> |On 25/10/2007, Bernd Jagla <baj2107@columbia.edu> wrote:
> |
> |       Hi,
> |       I am new to R and couldn't find any information on how to handle
> my
> |table
> |       data that I just read in the way I want to use it..
> |
> |       I read in a table from a file:
> |       x <- read.delim("filenam", header=TRUE)
> |
> |       one column (x$label) hold the class labels. Another holds some
> values
> |       (x$val).
> |       I want to calculate summary statistics for different classes.
> |
> |       How would I do this?
> |
> |       Thanks,
> |
> |       Bernd
> |
> |       ______________________________________________
> |       R-help@r-project.org mailing list
> |       https://stat.ethz.ch/mailman/listinfo/r-help
> |<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.
> |
> |
> |
> |
> |
> |--
> |Henrique Dallazuanna
> |Curitiba-Paraná-Brasil
> |25° 25' 40" S 49° 16' 22" O
>
>


-- 
Henrique Dallazuanna
Curitiba-Paraná-Brasil
25° 25' 40" S 49° 16' 22" O

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