Creating lists from matrices

Hi Alexander,

you could try this:

(my.matrix <- matrix(LETTERS[1:9], 3, byrow=TRUE))
split(my.matrix, row(my.matrix))


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: +32/16/336899
Fax: +32/16/337015
Web: http://www.med.kuleuven.ac.be/biostat
     http://www.student.kuleuven.ac.be/~m0390867/dimitris.htm


----- Original Message ----- 
From: "Alexander Sokol" <alexandersokol at ofir.dk>
To: <r-help at stat.math.ethz.ch>
Sent: Thursday, November 25, 2004 10:12 AM
Subject: [R] Creating lists from matrices

Hello,

I am using R 1.9.1 on Windows 2000 SP4. I have the following 
problem:

Say I have a matrix,

my.matrix

      [,1]   [,2]   [,3]
[1,]   "A"   "B"   "C"
[2,]   "D"   "E"   "F"
[3,]   "G"   "H"   "I"

I would like to apply an operation to this matrix which returns a 
list my.list
containing the following 3 elements,

my.list

[[1]]
[1] "A" "B" "C"
[[2]]
[2] "D" "E" "F"
[[3]]
[3] "G" "H" "I"

That is, each row of the original matrix is turned into a vector and 
these
vectors are collected to a list. How do I do this?

Thanks,
Alexander

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