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push

Return a one-dimensional ndarray formed by appending provided scalar values to an input ndarray.

Installation

npm install @stdlib/ndarray-push

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 push = require( '@stdlib/ndarray-push' );

push( x, ...values )

Returns a one-dimensional ndarray formed by appending provided scalar values to a one-dimensional input ndarray.

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

var x = array( [ 1.0, 2.0, 3.0, 4.0 ] );

var out = push( x, 5.0, 6.0, 7.0 );
// returns <ndarray>[ 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0 ]

The function accepts the following arguments:

• x: input ndarray. Must be one-dimensional.
• ...values: scalar values to append.

push.assign( x, ...values, out )

Appends scalar values to a one-dimensional input ndarray and assigns the result to a one-dimensional output ndarray.

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 = zeros( [ 7 ] );

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

var bool = ( out === y );
// returns true

The function accepts the following arguments:

• x: input ndarray. Must be one-dimensional.
• ...values: scalar values to append.
• out: output ndarray. Must be one-dimensional.

Notes

• Scalar values are cast to the data type of the input ndarray.

Examples

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

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

var out = push( x, 12, 14 );
console.log( ndarray2array( out ) );

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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 © 2016-2025. The Stdlib Authors.