I'm new bee to R programming. I  want to know how to create a 2 dimensional array of vectors which are of different lengths. This is what I'm trying to do:

```    A = c(1, 2, 3, 4)
B = c(5, 6, 7)

C = c(10, 11, 12, 13)
D = c(14, 15, 16)

E = c(21, 22, 23, 24)
F = c(25, 26, 27)

mat = matrix(nrow=3, ncol=2)

#This code does not work
mat[1, 1] = A
mat[1, 2] = B
mat[2, 1] = C
mat[2, 2] = D
mat[3, 1] = E
mat[3, 2] = F```

I would like to get mat to contain the following:

```            [,1]         [,2]
[1,]   1 2 3 4       5 6 7
[2,]   10 11 12 13   14 15 16
[3,]   21 22 23 24   25 26 27```

Can someone help me with this? Feb 1, 2019 83 views

## 1 answer to this question.

You can try making a list of matrices like this:

```mat<-matrix(list(), nrow=3, ncol=2)
mat[[1,1]] <- c(1, 2, 3, 4)
mat[[1,2]] <- c(5, 6, 7)
mat[[2,1]] <- c(10, 11, 12, 13)
mat[[2,2]] <- c(14, 15, 16)
mat[[3,1]] <- c(21, 22, 23, 24)
mat[[3,2]] <- c(25, 26, 27)``` answered Feb 1, 2019 by
• 9,940 points

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