[R] R HELP! How to create a matrix consisting of several matrices in R?

[arun]

Hi,

May be this helps:

 A<- matrix(list(),3,3)
 A[[1]]<- matrix(1,4,4)
 A[[2]]<- matrix(1:15,3,5)
 A[[3]]<- matrix(1:10,5,2)

---------------------------
str(A)
#List of 9
# $ : num [1:4, 1:4] 1 1 1 1 1 1 1 1 1 1 ...
# $ : int [1:3, 1:5] 1 2 3 4 5 6 7 8 9 10 ...
# $ : int [1:5, 1:2] 1 2 3 4 5 6 7 8 9 10
# $ : NULL
# $ : NULL
# $ : NULL
# $ : NULL
# $ : NULL
# $ : NULL
 #- attr(*, "dim")= int [1:2] 3 3
A
#     [,1]       [,2] [,3]
#[1,] Numeric,16 NULL NULL
#[2,] Integer,15 NULL NULL
#[3,] Integer,10 NULL NULL
is.matrix(A)
#[1] TRUE

A.K.


How to create a matrix consisting of several matrices in R? 

 I let A=matrix("list",3,3) in R  then put A[1,1] <- matrix(1,4,4) But it returns error. 

Please help. Thank you all.