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bternary2d

Apply a ternary callback to elements in three broadcasted nested input arrays and assign results to elements in a two-dimensional nested output array.

Installation

npm install @stdlib/array-base-broadcasted-ternary2d

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 bternary2d = require( '@stdlib/array-base-broadcasted-ternary2d' );

bternary2d( arrays, shapes, fcn )

Applies a ternary callback to elements in three broadcasted nested input arrays and assigns results to elements in a two-dimensional nested output array.

var add = require( '@stdlib/math-base-ops-add3' );
var zeros2d = require( '@stdlib/array-base-zeros2d' );

var x = [ [ 1.0, 2.0 ] ];
var y = [ [ 3.0 ], [ 4.0 ] ];
var z = [ [ 5.0 ] ];
var out = zeros2d( [ 2, 2 ] );

var shapes = [
    [ 1, 2 ],
    [ 2, 1 ],
    [ 1, 1 ],
    [ 2, 2 ]
];

bternary2d( [ x, y, z, out ], shapes, add );
// out => [ [ 9.0, 10.0 ], [ 10.0, 11.0 ] ]

The function accepts the following arguments:

• arrays: array-like object containing three input nested arrays and one output nested array.
• shapes: array shapes.
• fcn: ternary function to apply.

Notes

• The input and output array shapes must be broadcast compatible.

Examples

var discreteUniform = require( '@stdlib/random-base-discrete-uniform' ).factory;
var filled2dBy = require( '@stdlib/array-base-filled2d-by' );
var zeros2d = require( '@stdlib/array-base-zeros2d' );
var add = require( '@stdlib/math-base-ops-add3' );
var bternary2d = require( '@stdlib/array-base-broadcasted-ternary2d' );

var shapes = [
    [ 1, 3 ],
    [ 3, 1 ],
    [ 1, 1 ],
    [ 3, 3 ]
];

var x = filled2dBy( shapes[ 0 ], discreteUniform( -100, 100 ) );
console.log( x );

var y = filled2dBy( shapes[ 1 ], discreteUniform( -100, 100 ) );
console.log( y );

var z = filled2dBy( shapes[ 2 ], discreteUniform( -100, 100 ) );
console.log( z );

var out = zeros2d( shapes[ 3 ] );
console.log( out );

bternary2d( [ x, y, z, out ], shapes, add );
console.log( 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 © 2016-2024. The Stdlib Authors.