[R] data frame usage

[Bernd Jagla]

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 at gmail.com]
|Sent: Thursday, October 25, 2007 1:15 PM
|To: Bernd Jagla
|Cc: r-help at r-project.org
|Subject: Re: [R] data frame usage
|
|Hi,
|
|tapply(x$val, x$label, summary)
|
|
|
|On 25/10/2007, Bernd Jagla <baj2107 at 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
|
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|
|
|
|
|--
|Henrique Dallazuanna
|Curitiba-Paraná-Brasil
|25° 25' 40" S 49° 16' 22" O