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ndarray-base-empty

Create an uninitialized ndarray having a specified shape and data type.

https://github.com/stdlib-js/ndarray-base-empty

Science Score: 26.0%

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base data empty javascript matrix ndarray node node-js nodejs stdlib structure types vector
Last synced: 6 months ago · JSON representation

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Create an uninitialized ndarray having a specified shape and data type.

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base data empty javascript matrix ndarray node node-js nodejs stdlib structure types vector
Created almost 3 years ago · Last pushed 11 months ago
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README.md

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.

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Create an uninitialized ndarray having a specified shape and data type.

## 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 © 2016-2025. The Stdlib [Authors][stdlib-authors].

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