mathjs/docs/reference/functions/flatten.md

Math.js is an extensive math library for JavaScript and Node.js. It features a flexible expression parser and offers an integrated solution to work with numbers, big numbers, complex numbers, units, and matrices.

# Function flatten

Flatten a multi dimensional matrix into a single dimensional matrix.


## Syntax

```js
math.flatten(x)
```

### Parameters

Parameter | Type | Description
--------- | ---- | -----------
`x` | Matrix | Array | Matrix to be flattened

### Returns

Type | Description
---- | -----------
Matrix | Array | Returns the flattened matrix


## Examples

```js
math.flatten([[1,2], [3,4]]);   // returns [1, 2, 3, 4]
```


## See also

[concat](concat.md),
[resize](resize.md),
[size](size.md),
[squeeze](squeeze.md)


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