# vec, vecr¶

## Purpose¶

Creates a column vector by appending the columns/rows of a matrix to each other.

## Format¶

yc = vec(x)
yc = vecr(x)
Parameters

x (NxK matrix) – data

Returns
• yc ((N*K)x1 vector) – the columns of x appended to each other.

• yr ((N*K)x1 vector) – the rows of x appended to each other and the result transposed.

## Examples¶

x = { 1 2,
3 4 };
yc = vec(x);
yr = vecr(x);


The code above assigns the variables yc and yr:

     1       1
yc = 3  yr = 2
2       3
4       4


## Remarks¶

vecr() is much faster.