# MATLAB - Appending Vectors

MATLAB allows you to append vectors together to create new vectors.

If you have two row vectors r1 and r2 with n and m number of elements, to create a row vector r of n plus m elements, by appending these vectors, you write −

```r = [r1,r2]
```

You can also create a matrix r by appending these two vectors, the vector r2, will be the second row of the matrix −

```r = [r1;r2]
```

However, to do this, both the vectors should have same number of elements.

Similarly, you can append two column vectors c1 and c2 with n and m number of elements. To create a column vector c of n plus m elements, by appending these vectors, you write −

```c = [c1; c2]
```

You can also create a matrix c by appending these two vectors; the vector c2 will be the second column of the matrix −

```c = [c1, c2]
```

However, to do this, both the vectors should have same number of elements.

## Example

Create a script file with the following code −

```r1 = [ 1 2 3 4 ];
r2 = [5 6 7 8 ];
r = [r1,r2]
rMat = [r1;r2]

c1 = [ 1; 2; 3; 4 ];
c2 = [5; 6; 7; 8 ];
c = [c1; c2]
cMat = [c1,c2]
```

When you run the file, it displays the following result −

```r =

Columns 1 through 7:

1          2          3          4          5          6          7

Column 8:

8

rMat =

1          2          3          4
5          6          7          8

c =

1
2
3
4
5
6
7
8

cMat =

1          5
2          6
3          7
4          8

```
matlab_vectors.htm