# Documentation

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## Create Matrices

MATLAB live scripts support most MuPAD functionality, though there are some differences. For more information, see Convert MuPAD Notebooks to MATLAB Live Scripts.

MuPAD® supports creating and operating on vectors and multidimensional matrices. Vectors and matrices in MuPAD can contain arbitrary MuPAD objects: numbers, variables, arithmetical expressions, and so on. The simplest way to create a matrix is to use the `matrix` command:

`matrix([[1, 2, 3], [4, 5, 6]])`
``` ```

When creating a matrix, you can explicitly specify its dimensions. If you specify matrix dimensions, you can use a flat list to specify all elements of a matrix. The `matrix` command takes the entries from the flat list and generates a matrix, row by row. For example, create the following 2×3 matrix:

`matrix(2, 3, [1, 2, 3, 4, 5, 6])`
``` ```

Using the same list of elements, create the following 3 ×2 matrix:

`matrix(3, 2, [1, 2, 3, 4, 5, 6])`
``` ```

If you specify matrix dimensions, and then enter rows or columns shorter than the declared dimensions, MuPAD pads the matrix with zero elements:

`matrix(3, 3, [[1, 2, 3], [4, 5, 6]])`
``` ```
`matrix(3, 3, [[1, 2, 3], [4]])`
``` ```

To create a matrix of zeros, specify matrix dimensions and omit specifying elements:

`matrix(3, 2)`
``` ```

If you use a flat list, MuPAD cannot determine where to put zeros and, therefore, issues an error:

`matrix(3, 3, [1, 2, 3, 4])`
```Error: The number of list entries does not match matrix row dimension. [(Dom::Matrix(Dom::ExpressionField()))::mkSparse] ```

If you specify matrix dimensions, and then enter rows or columns longer than the declared dimensions, MuPAD also issues an error:

`A := matrix(2, 3, [[1, 2, 3], [4, 5, 6], [7, 8, 9]])`
```Error: The number of list entries does not match matrix row dimension. [(Dom::Matrix(Dom::ExpressionField()))::mkSparse] ```

The `matrix` command creates an object of the type `Dom::Matrix()`:

```A := matrix([[1, 2, 3], [4, 5, 6]]): type(A)```
``` ```