[R] rbind to array members‏

[RICHARD M. HEIBERGER]

>        z <- abind(x[,,1], c(4,5,6),along=0)

z is probably not what you want because you aren't using the drop=FALSE
argument.  See the FAQ 7.5


abind, and arrays in general, are rectangular solids.  They are not
ragged.  For that you need lists.  To get something like your request
> x
> , , 1
>
>     [,1] [,2] [,3]
> [1,]    1    2    3
> [2,]    4    5    6
>
> , , 2
>
>     [,1] [,2] [,3]
> [1,]    7    8    9
>

you need
> x <- list(matrix(1:6, 2, 3, byrow=TRUE),
+           matrix(7:9, 1, 3))
> x
[[1]]
     [,1] [,2] [,3]
[1,]    1    2    3
[2,]    4    5    6

[[2]]
     [,1] [,2] [,3]
[1,]    7    8    9

>