[R] apply for list or list -> array

[Dimitris Rizopoulos]

for lists look at ?lapply() and ?sapply(); for your 2nd question try 
something like:

array(unlist(aa), dim = c(3, 3, 2))


I hope it helps.

Best,
Dimitris

----
Dimitris Rizopoulos
Ph.D. Student
Biostatistical Centre
School of Public Health
Catholic University of Leuven

Address: Kapucijnenvoer 35, Leuven, Belgium
Tel: +32/(0)16/336899
Fax: +32/(0)16/337015
Web: http://med.kuleuven.be/biostat/
     http://www.student.kuleuven.be/~m0390867/dimitris.htm


----- Original Message ----- 
From: "Ahn ChaeHyung" <cahn88 at hotmail.com>
To: <r-help at stat.math.ethz.ch>
Sent: Tuesday, September 19, 2006 3:32 AM
Subject: [R] apply for list or list -> array


> Dear all,
>
> I have the following list, "aa", composed of two 3*3 tables.  I 
> would like
> to use "apply" function to summarize it, but "apply" cannot handle 
> "list".
> I want to do it without using any interation.
>
> 1. Is there any function like "apply" for list?
> 2. Is there any way to transform that "list" to a 2*3*3 "array"?
>
> thanks
>
> cahn
>
> -----------------------------------------
>>aa
> [[1]]
>     [,1] [,2] [,3]
> [1,]    1    3    1
> [2,]    2    0    1
> [3,]    1    1    0
>
> [[2]]
>     [,1] [,2] [,3]
> [1,]    1    3    1
> [2,]    2    0    1
> [3,]    1    1    0
>
>
> I would like to avoid any iteration
>
>
>
> -------------------------------------------------
> Ahn, Chaehyung (cahn) Ph.D.
> Alpha-Gamma Technologies Inc.
> My Home: http://blog.naver.com/cahn88
>
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> 


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