Ecosyste.ms: Awesome
An open API service indexing awesome lists of open source software.
https://github.com/stdlib-js/ndarray-base-empty
Create an uninitialized ndarray having a specified shape and data type.
https://github.com/stdlib-js/ndarray-base-empty
base data empty javascript matrix ndarray node node-js nodejs stdlib structure types vector
Last synced: 2 months ago
JSON representation
Create an uninitialized ndarray having a specified shape and data type.
- Host: GitHub
- URL: https://github.com/stdlib-js/ndarray-base-empty
- Owner: stdlib-js
- License: apache-2.0
- Created: 2023-03-26T10:20:26.000Z (over 1 year ago)
- Default Branch: main
- Last Pushed: 2024-09-01T13:13:04.000Z (4 months ago)
- Last Synced: 2024-10-09T19:32:11.953Z (2 months ago)
- Topics: base, data, empty, javascript, matrix, ndarray, node, node-js, nodejs, stdlib, structure, types, vector
- Language: JavaScript
- Homepage: https://github.com/stdlib-js/stdlib
- Size: 2.19 MB
- Stars: 1
- Watchers: 3
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- Changelog: CHANGELOG.md
- Contributing: CONTRIBUTING.md
- License: LICENSE
- Code of conduct: CODE_OF_CONDUCT.md
- Citation: CITATION.cff
- Security: SECURITY.md
Awesome Lists containing this project
README
About stdlib...
We believe in a future in which the web is a preferred environment for numerical computation. To help realize this future, we've built stdlib. stdlib is a standard library, with an emphasis on numerical and scientific computation, written in JavaScript (and C) for execution in browsers and in Node.js.
The library is fully decomposable, being architected in such a way that you can swap out and mix and match APIs and functionality to cater to your exact preferences and use cases.
When you use stdlib, you can be absolutely certain that you are using the most thorough, rigorous, well-written, studied, documented, tested, measured, and high-quality code out there.
To join us in bringing numerical computing to the web, get started by checking us out on GitHub, and please consider financially supporting stdlib. We greatly appreciate your continued support!
# empty
[![NPM version][npm-image]][npm-url] [![Build Status][test-image]][test-url] [![Coverage Status][coverage-image]][coverage-url]
> Create an uninitialized [ndarray][@stdlib/ndarray/base/ctor] having a specified shape and [data type][@stdlib/ndarray/dtypes].
## Installation
```bash
npm install @stdlib/ndarray-base-empty
```
Alternatively,
- To load the package in a website via a `script` tag without installation and bundlers, use the [ES Module][es-module] available on the [`esm`][esm-url] branch (see [README][esm-readme]).
- If you are using Deno, visit the [`deno`][deno-url] branch (see [README][deno-readme] for usage intructions).
- For use in Observable, or in browser/node environments, use the [Universal Module Definition (UMD)][umd] build available on the [`umd`][umd-url] branch (see [README][umd-readme]).
The [branches.md][branches-url] file summarizes the available branches and displays a diagram illustrating their relationships.
To view installation and usage instructions specific to each branch build, be sure to explicitly navigate to the respective README files on each branch, as linked to above.
## Usage
```javascript
var empty = require( '@stdlib/ndarray-base-empty' );
```
#### empty( dtype, shape, order )
Creates an uninitialized [ndarray][@stdlib/ndarray/base/ctor] having a specified shape and [data type][@stdlib/ndarray/dtypes].
```javascript
var arr = empty( 'float64', [ 2, 2 ], 'row-major' );
// returns
var sh = arr.shape;
// returns [ 2, 2 ]
var dt = arr.dtype;
// returns 'float64'
```
The function accepts the following arguments:
- **dtype**: underlying [data type][@stdlib/ndarray/dtypes].
- **shape**: array shape.
- **order**: specifies whether an [ndarray][@stdlib/ndarray/base/ctor] is `'row-major'` (C-style) or `'column-major'` (Fortran-style).
## Notes
- If `dtype` is `'generic'`, the function always returns a zero-filled array.
- For returned [ndarrays][@stdlib/ndarray/base/ctor] whose underlying memory is **not** initialized, memory contents are unknown and may contain **sensitive** data.
## Examples
```javascript
var dtypes = require( '@stdlib/ndarray-dtypes' );
var empty = require( '@stdlib/ndarray-base-empty' );
// Get a list of data types:
var dt = dtypes();
// Generate uninitialized arrays...
var arr;
var i;
for ( i = 0; i < dt.length; i++ ) {
arr = empty( dt[ i ], [ 2, 2 ], 'row-major' );
console.log( arr.data );
}
```
* * *
## 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
[![Chat][chat-image]][chat-url]
---
## License
See [LICENSE][stdlib-license].
## Copyright
Copyright © 2016-2024. The Stdlib [Authors][stdlib-authors].
[npm-image]: http://img.shields.io/npm/v/@stdlib/ndarray-base-empty.svg
[npm-url]: https://npmjs.org/package/@stdlib/ndarray-base-empty
[test-image]: https://github.com/stdlib-js/ndarray-base-empty/actions/workflows/test.yml/badge.svg?branch=main
[test-url]: https://github.com/stdlib-js/ndarray-base-empty/actions/workflows/test.yml?query=branch:main
[coverage-image]: https://img.shields.io/codecov/c/github/stdlib-js/ndarray-base-empty/main.svg
[coverage-url]: https://codecov.io/github/stdlib-js/ndarray-base-empty?branch=main
[chat-image]: https://img.shields.io/gitter/room/stdlib-js/stdlib.svg
[chat-url]: https://app.gitter.im/#/room/#stdlib-js_stdlib:gitter.im
[stdlib]: https://github.com/stdlib-js/stdlib
[stdlib-authors]: https://github.com/stdlib-js/stdlib/graphs/contributors
[umd]: https://github.com/umdjs/umd
[es-module]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Modules
[deno-url]: https://github.com/stdlib-js/ndarray-base-empty/tree/deno
[deno-readme]: https://github.com/stdlib-js/ndarray-base-empty/blob/deno/README.md
[umd-url]: https://github.com/stdlib-js/ndarray-base-empty/tree/umd
[umd-readme]: https://github.com/stdlib-js/ndarray-base-empty/blob/umd/README.md
[esm-url]: https://github.com/stdlib-js/ndarray-base-empty/tree/esm
[esm-readme]: https://github.com/stdlib-js/ndarray-base-empty/blob/esm/README.md
[branches-url]: https://github.com/stdlib-js/ndarray-base-empty/blob/main/branches.md
[stdlib-license]: https://raw.githubusercontent.com/stdlib-js/ndarray-base-empty/main/LICENSE
[@stdlib/ndarray/base/ctor]: https://github.com/stdlib-js/ndarray-base-ctor
[@stdlib/ndarray/dtypes]: https://github.com/stdlib-js/ndarray-dtypes