Re: [R] To summary data

2012-05-14 Thread John Kane
One way is to use the reshape2 package
===
library(reshape2)
dcast(xx,  A ~ . , sum)


John Kane
Kingston ON Canada


> -Original Message-
> From: mrzun...@gmail.com
> Sent: Sun, 13 May 2012 22:14:02 -0700 (PDT)
> To: r-help@r-project.org
> Subject: [R] To summary data
> 
> hi all,
> 
> my data is here,
> --
> data
> 
>   clss number
> 1A  1
> 2B  2
> 3C  3
> 4A  4
> 5B  5
> 6C  6
> 7A  7
> 8B  8
> 9C  9
> -
> I want to this format
> 
> clss number
> A  12
> B  15
> C  18
> 
> is there a way to solve this problem?
> 
> --
> View this message in context:
> http://r.789695.n4.nabble.com/To-summary-data-tp4629887.html
> Sent from the R help mailing list archive at Nabble.com.
> 
> __
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> PLEASE do read the posting guide
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__
R-help@r-project.org 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.


Re: [R] To summary data

2012-05-14 Thread Berend Hasselman

On 14-05-2012, at 07:14, mrzung wrote:

> hi all,
> 
> my data is here,
> --
> data
> 
>  clss number
> 1A  1
> 2B  2
> 3C  3
> 4A  4
> 5B  5
> 6C  6
> 7A  7
> 8B  8
> 9C  9
> -
> I want to this format
> 
> clss number
> A  12
> B  15
> C  18
> 
> is there a way to solve this problem?

?aggregate

mydata <- data.frame(clss=rep(c("A","B","C"),rep=3),number=1:9, 
stringsAsFactors=FALSE)
aggregate(number ~ .,data=mydata,sum)

Berend

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R-help@r-project.org 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.


[R] To summary data

2012-05-14 Thread mrzung
hi all,

my data is here,
--
data

  clss number
1A  1
2B  2
3C  3
4A  4
5B  5
6C  6
7A  7
8B  8
9C  9
-
I want to this format

clss number
A  12
B  15
C  18

is there a way to solve this problem?

--
View this message in context: 
http://r.789695.n4.nabble.com/To-summary-data-tp4629887.html
Sent from the R help mailing list archive at Nabble.com.

__
R-help@r-project.org mailing list
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.