npm package: @stdlib/ndarray-vector-uint8
Description: Create an unsigned 8-bit integer vector (i.e., a one-dimensional ndarray).
Author: The Stdlib Authors
Latest version: 0.1.1

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# Uint8Vector

[![NPM version][npm-image]][npm-url] [![Build Status][test-image]][test-url] [![Coverage Status][coverage-image]][coverage-url] <!-- [![dependencies][dependencies-image]][dependencies-url] -->

> Create an unsigned 8-bit integer vector (i.e., a one-dimensional [ndarray][@stdlib/ndarray/ctor]).

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<section class="intro">

</section>

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<!-- Package usage documentation. -->

<section class="installation">

## Installation

```bash
npm install @stdlib/ndarray-vector-uint8
```

</section>

<section class="usage">

## Usage

```javascript
var Uint8Vector = require( '@stdlib/ndarray-vector-uint8' );
```

#### Uint8Vector( \[options] )

Returns a one-dimensional unsigned 8-bit integer [ndarray][@stdlib/ndarray/ctor].

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

var arr = new Uint8Vector();
// returns <ndarray>

var len = numel( arr );
// returns 0
```

The function accepts the following options:

-   **order**: specifies whether an [ndarray][@stdlib/ndarray/ctor] is `'row-major'` (C-style) or `'column-major'` (Fortran-style). Default: `'row-major'`.
-   **mode**: specifies how to handle indices which exceed array dimensions (see [`ndarray`][@stdlib/ndarray/ctor]). Default: `'throw'`.
-   **readonly**: boolean indicating whether an array should be **read-only**. Default: `false`.

#### Uint8Vector( length\[, options] )

Returns a one-dimensional unsigned 8-bit integer [ndarray][@stdlib/ndarray/ctor] having a specified `length`.

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

var arr = new Uint8Vector( 5 );
// returns <ndarray>

var len1 = numel( arr );
// returns 5
```

#### Uint8Vector( obj\[, options] )

Creates a one-dimensional unsigned 8-bit integer [ndarray][@stdlib/ndarray/ctor] from an array-like object or iterable.

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

var arr = new Uint8Vector( [ 1, 2, 3 ] );
// returns <ndarray>

var len1 = numel( arr );
// returns 3
```

#### Uint8Vector( buffer\[, byteOffset\[, length]]\[, options] )

Returns a one-dimensional unsigned 8-bit integer [ndarray][@stdlib/ndarray/ctor] view of an [`ArrayBuffer`][@stdlib/array/buffer].

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

var buf = new ArrayBuffer( 32 );

var arr1 = new Uint8Vector( buf );
// returns <ndarray>

var len1 = numel( arr1 );
// returns 32

var arr2 = new Uint8Vector( buf, 16 );
// returns <ndarray>

var len2 = numel( arr2 );
// returns 16

var arr3 = new Uint8Vector( buf, 16, 1 );
// returns <ndarray>

var len3 = numel( arr3 );
// returns 1
```

</section>

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</section>

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<section class="examples">

## Examples

<!-- eslint no-undef: "error" -->

```javascript
var discreteUniform = require( '@stdlib/random-array-discrete-uniform' );
var sum = require( '@stdlib/blas-ext-sum' );
var map = require( '@stdlib/ndarray-map' );
var Uint8Vector = require( '@stdlib/ndarray-vector-uint8' );

// Create a vector containing random values:
var x = new Uint8Vector( discreteUniform( 10, 0, 100 ) );

// Compute the sum:
var v = sum( x );
console.log( v.get() );

// Define a function which applies a threshold to individual values:
function threshold( v ) {
    return ( v > 10 ) ? v : 0;
}

// Apply threshold:
var y = map( x, threshold );

// Recompute the sum:
v = sum( y );
console.log( v.get() );
```

</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].

#### Community

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---

## License

See [LICENSE][stdlib-license].


## Copyright

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

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