npm package: @stdlib/ndarray-concat1d
Description: Return a one-dimensional ndarray formed by concatenating provided input arguments.
Author: The Stdlib Authors
Latest version: 0.1.1

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# concat1d

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> Return a one-dimensional [ndarray][@stdlib/ndarray/ctor] formed by concatenating provided input arguments.

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<section class="intro">

</section>

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<!-- Package usage documentation. -->

<section class="installation">

## Installation

```bash
npm install @stdlib/ndarray-concat1d
```

</section>

<section class="usage">

## Usage

```javascript
var concat1d = require( '@stdlib/ndarray-concat1d' );
```

#### concat1d( ...arrays )

Returns a one-dimensional [ndarray][@stdlib/ndarray/ctor] formed by concatenating provided input arguments.

```javascript
var array = require( '@stdlib/ndarray-array' );

var x = array( [ -1.0, 2.0, 3.0, 4.0 ] );
var y = array( [ -5.0, 6.0, -7.0, -8.0, 9.0, -10.0 ] );

var out = concat1d( x, y );
// returns <ndarray>[ -1.0, 2.0, 3.0, 4.0, -5.0, 6.0, -7.0, -8.0, 9.0, -10.0 ]
```

The function accepts the following arguments:

-   **...arrays**: inputs to concatenate. May be passed as separate arguments or an array of arguments. Each argument must either be a one-dimensional [ndarray][@stdlib/ndarray/ctor], a zero-dimensional [ndarray][@stdlib/ndarray/ctor], or a scalar value.

The data type of the output [ndarray][@stdlib/ndarray/ctor] is determined by applying [type promotion rules][@stdlib/ndarray/promotion-rules]. If provided [ndarrays][@stdlib/ndarray/ctor] having different [memory layouts][@stdlib/ndarray/orders] or only scalar inputs, the output [ndarray][@stdlib/ndarray/ctor] has the [default memory layout][@stdlib/ndarray/defaults].

#### concat1d.assign( ...arrays, out )

Concatenates provided input arguments and assigns the result to a provided one-dimensional output [ndarray][@stdlib/ndarray/ctor].

```javascript
var array = require( '@stdlib/ndarray-array' );
var zeros = require( '@stdlib/ndarray-zeros' );

var x = array( [ -1.0, 2.0, 3.0, 4.0 ] );
var y = array( [ -5.0, 6.0, -7.0, -8.0 ] );
var z = zeros( [ 8 ] );

var out = concat1d.assign( x, y, z );
// returns <ndarray>[ -1.0, 2.0, 3.0, 4.0, -5.0, 6.0, -7.0, -8.0 ]

var bool = ( out === z );
// returns true
```

The function accepts the following arguments:

-   **...arrays**: inputs to concatenate. May be passed as separate arguments or an array of arguments. Each argument must either be a one-dimensional [ndarray][@stdlib/ndarray/ctor], a zero-dimensional [ndarray][@stdlib/ndarray/ctor], or a scalar value.
-   **out**: output [ndarray][@stdlib/ndarray/ctor].

</section>

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<section class="examples">

## Examples

```javascript
var discreteUniform = require( '@stdlib/random-array-discrete-uniform' );
var array = require( '@stdlib/ndarray-array' );
var ndarray2array = require( '@stdlib/ndarray-to-array' );
var concat1d = require( '@stdlib/ndarray-concat1d' );

var opts = {
    'dtype': 'generic'
};
var x = array( discreteUniform( 6, 0, 10, opts ), opts );
console.log( ndarray2array( x ) );

var y = array( discreteUniform( 8, 0, 10, opts ), opts );
console.log( ndarray2array( y ) );

var out = concat1d( x, y );
console.log( ndarray2array( out ) );
```

</section>

<!-- /.examples -->

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* * *

## Notice

This package is part of [stdlib][stdlib], a standard library for JavaScript and Node.js, with an emphasis on numerical and scientific computing. The library provides a collection of robust, high performance libraries for mathematics, statistics, streams, utilities, and more.

For more information on the project, filing bug reports and feature requests, and guidance on how to develop [stdlib][stdlib], see the main project [repository][stdlib].

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---

## License

See [LICENSE][stdlib-license].


## Copyright

Copyright &copy; 2016-2026. The Stdlib [Authors][stdlib-authors].

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