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isndarrayLike

Test if a value is ndarray-like.

Installation

npm install @stdlib/assert-is-ndarray-like

Alternatively,

• To load the package in a website via a script tag without installation and bundlers, use the ES Module available on the esm branch (see README).
• If you are using Deno, visit the deno branch (see README for usage intructions).
• For use in Observable, or in browser/node environments, use the Universal Module Definition (UMD) build available on the umd branch (see README).

The branches.md 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

var isndarrayLike = require( '@stdlib/assert-is-ndarray-like' );

isndarrayLike( value )

Tests if a value is ndarray-like.

var ndarray = require( '@stdlib/ndarray-ctor' );

var arr = ndarray( 'generic', [ 0, 0, 0, 0 ], [ 2, 2 ], [ 2, 1 ], 0, 'row-major' );
var bool = isndarrayLike( arr );
// returns true

A value is ndarray-like if a value is an object with the following properties:

• dtype: string specifying a data type.
• data: object pointing to an underlying data buffer.
• shape: array-like object containing dimensions.
• strides: array-like object containing stride lengths.
• offset: number specifying the index offset.
• order: string describing the memory layout.
• ndims: number specifying the number of dimensions.
• length: number specifying the total number of elements.
• flags: object containing meta data.
• get: function for retrieving elements.
• set: function for setting elements.

Examples

var ndarray = require( '@stdlib/ndarray-ctor' );
var isndarrayLike = require( '@stdlib/assert-is-ndarray-like' );

var arr = ndarray( 'generic', [ 0, 0, 0, 0 ], [ 2, 2 ], [ 2, 1 ], 0, 'row-major' );
var bool = isndarrayLike( arr );
// returns true

bool = isndarrayLike( [ 1, 2, 3, 4 ] );
// returns false

bool = isndarrayLike( {} );
// returns false

bool = isndarrayLike( null );
// returns false

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See Also

• @stdlib/assert-is-array: test if a value is an array.
• @stdlib/assert-is-array-like: test if a value is array-like.
• @stdlib/assert-is-matrix-like: test if a value is a 2-dimensional ndarray-like object.
• @stdlib/assert-is-typed-array-like: test if a value is typed-array-like.
• @stdlib/assert-is-vector-like: test if a value is a 1-dimensional ndarray-like object.

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Notice

This package is part of 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, see the main project repository.

Community

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License

See LICENSE.

Copyright

Copyright © 2016-2024. The Stdlib Authors.