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layout: default
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Function concat #
Concatenate two or more matrices.
Syntax #
```js
math.concat(A, B, C, ...)
math.concat(A, B, C, ..., dim)
```
Where #
- `dim: number` is a zero-based dimension over which to concatenate the matrices.
By default the last dimension of the matrices.
Parameters #
Parameter | Type | Description
--------- | ---- | -----------
`args` | ... Array | Matrix | Two or more matrices
Returns #
Type | Description
---- | -----------
Array | Matrix | Concatenated matrix
Throws #
Type | Description
---- | -----------
Examples #
```js
const A = [[1, 2], [5, 6]]
const B = [[3, 4], [7, 8]]
math.concat(A, B) // returns [[1, 2, 3, 4], [5, 6, 7, 8]]
math.concat(A, B, 0) // returns [[1, 2], [5, 6], [3, 4], [7, 8]]
math.concat('hello', ' ', 'world') // returns 'hello world'
```
See also #
[size](size.html),
[squeeze](squeeze.html),
[subset](subset.html),
[transpose](transpose.html)