# ismatrix

determines whether input is matrix or not

## Syntax

* TF = ismatrix(A)

## Input argument

* A - input array as a scalar, vector, matrix, or multidimensional array.

## Output argument

* TF - a logical: true if it is a matrix.

## Description

**TF = ismatrix(A)** returns true if A is a matrix.

A matrix is a two-dimensional array that has a size of m-by-n, where m and n are nonnegative integers.

## Example

```matlab
x = [1+i,-i;i,2i];
ismatrix(x)
ismatrix(ones(3,1,2))
```

## See also

[isvector](isvector).

## History

| Version | Description     |
| ------- | --------------- |
| 1.0.0   | initial version |

## Author

Allan CORNET
