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<h1 id="function-fft">Function fft <a href="#function-fft" title="Permalink">#</a></h1>

Calculate N-dimensional Fourier transform


<h2 id="syntax">Syntax <a href="#syntax" title="Permalink">#</a></h2>

```js
math.fft(arr)
```

<h3 id="parameters">Parameters <a href="#parameters" title="Permalink">#</a></h3>

Parameter | Type | Description
--------- | ---- | -----------
`arr` | Array &#124; Matrix | An array or matrix

<h3 id="returns">Returns <a href="#returns" title="Permalink">#</a></h3>

Type | Description
---- | -----------
Array &#124; Matrix | N-dimensional Fourier transformation of the array


<h3 id="throws">Throws <a href="#throws" title="Permalink">#</a></h3>

Type | Description
---- | -----------


<h2 id="examples">Examples <a href="#examples" title="Permalink">#</a></h2>

```js
math.fft([[1, 0], [1, 0]]) // returns [[{re:2, im:0}, {re:2, im:0}], [{re:0, im:0}, {re:0, im:0}]]

```


<h2 id="see-also">See also <a href="#see-also" title="Permalink">#</a></h2>

[ifft](ifft.html)