Matrix Concatenation Operators

RATS offers three operators for doing simple matrix concatenation:

~	Does a horizontal concatenation of two arrays. Both arrays must have the same number of rows.
~~	Does vertical concatenation. Both arrays must have the same number of columns.
~\	Creates a block diagonal matrix from two arrays.

For example, if A is

1 1

and B is

2 2

the commands:

compute abhoriz = a~b

compute abvert = a~~b

compute abblock = a~\b

return:

ABHORIZ =

1 1 2 2

ABVERT =

1 1

2 2

ABBLOCK =

1 1 0 0

0 0 2 2