MATLAB Function Reference |

**Syntax**

**Description**

```
true
```

is shorthand for `logical`

`(1)`

.

```
true(n)
```

is an `n`

-by-`n`

matrix of logical ones.

```
true(m,n)
```

or `true([m,n])`

is an `m`

-by-`n`

matrix of logical ones.

```
true(m,n,p,...)
```

or `true([m n p ...])`

is an `m`

-by-`n`

-by-`p`

-by-`...`

array of logical ones.

```
true(size(A))
```

is an array of logical ones that is the same size as array `A`

.

**Remarks**

`true(n)`

is much faster and more memory efficient than `logical(ones(n))`

.

**See Also **

triu | try |