Vertically concatenate multiple fi objects
c = vertcat(a,b,...)
[a; b; ...]
c = vertcat(a,b,...) is called for the syntax [a; b; ...] when any of a, b, ... , is a fi object.
[a;b] is the vertical concatenation of matrices a and b. a and b must have the same number of columns. Any number of matrices can be concatenated within one pair of brackets. N-D arrays are vertically concatenated along the first dimension. The remaining dimensions must match.
Horizontal and vertical concatenation can be combined, as in [1 2;3 4].
[a b; c] is allowed if the number of rows of a equals the number of rows of b, and if the number of columns of a plus the number of columns of b equals the number of columns of c.
The matrices in a concatenation expression can themselves be formed via a concatenation, as in [a b;[c d]].