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list manipulation- an Easy method to do rbind within a list?

To: <s-news@lists.biostat.wustl.edu>
Subject: list manipulation- an Easy method to do rbind within a list?
From: "Steve Su" <s.su@qut.edu.au>
Date: Sun, 27 Oct 2002 23:07:08 +1000
Importance: High

Dear All,

 

Lets suppose we have the following list:

 

list(matrix(rnorm(6,3,2),ncol=2),matrix(rnorm(8,3,2),ncol=2),matrix(rnorm(12,3,2),ncol=2))

[[1]]:

         [,1]      [,2]

[1,] 3.276729 -1.054961

[2,] 6.143453  2.661098

[3,] 3.952712  5.311158

 

[[2]]:

         [,1]     [,2]

[1,] 2.575617 2.513717

[2,] 1.657351 2.806912

[3,] 3.134966 3.357252

[4,] 3.832333 7.657893

 

[[3]]:

          [,1]       [,2]

[1,]  4.171555 1.67055950

[2,] -1.763487 1.42753060

[3,]  4.552255 2.78249251

[4,] -3.206052 0.49597245

[5,] -1.742525 4.01679075

[6,]  2.486436 0.05678951

 

 

What is the most efficient way to combine these three elements into one matrix with two columns and 13 rows? Is there a simple and effective solution to this? My solution is quite complicated for the small problem at hand so I would appreciate any input J

 

Thanks for your attention!

 

 

 

 

**************************************************************************************

 Steve Su (s.su@qut.edu.au)   
 PhD student. 

 
School of Accountancy
 School of Mathematical Sciences
 
Queensland University of Technology 

 Postal Address: Steve Su,
School of Accountancy, QUT, PO Box 2434, Brisbane,
 
Queensland, Australia, 4000.  


 Phone:  +61 7 3864 2017
 Fax:    +61 7 3864 1812     
 
Mobile: 0421  840  586 
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