[R] data frame usage

[Bernd Jagla]

No, I just want to the values for one class nothing applied to them.
So for example tapply(x$val, x$label, hist) gives me all kind of stats that
can be used for plotting the histogram. But I want to plot the actual
histogram for one class. 
I guess it would be easiest to take your construct and just "echo" the
values for a specific class.
I hope you understand better what I mean....

Thanks again,

Bernd

|-----Original Message-----
|From: Henrique Dallazuanna [mailto:wwwhsd at gmail.com]
|Sent: Thursday, October 25, 2007 1:34 PM
|To: Bernd Jagla
|Cc: r-help at r-project.org
|Subject: Re: [R] data frame usage
|
|Yes, or
|
| tapply(x$val, x$label, summary)[[1]]
|
|for the first class.
|
|On 25/10/2007, Bernd Jagla <baj2107 at columbia.edu> wrote:
|
|	Wow, that easy...
|	And how can get only the values for a specific class?
|
|	Like tapply(x$val, x$label, ?echo?)$class1
|
|	What should echo be?
|
|	Thanks,
|	B
|
|	|-----Original Message-----
|	|From: Henrique Dallazuanna [mailto:wwwhsd at gmail.com]
|	|Sent: Thursday, October 25, 2007 1:15 PM
|	|To: Bernd Jagla
|	|Cc: r-help at r-project.org
|	|Subject: Re: [R] data frame usage
|	|
|	|Hi,
|	|
|	|tapply(x$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
|
|
|
|
|
|
|--
|Henrique Dallazuanna
|Curitiba-Paraná-Brasil
|25° 25' 40" S 49° 16' 22" O