bternary3d

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

Usage

var bternary3d = require( '@stdlib/array/base/broadcasted-ternary3d' );

bternary3d( arrays, shapes, fcn )

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

var add = require( '@stdlib/math/base/ops/add3' );
var zeros3d = require( '@stdlib/array/base/zeros3d' );

var x = [ [ [ 1.0 ], [ 2.0 ] ] ];
var y = [ [ [ 3.0 ] ], [ [ 4.0 ] ] ];
var z = [ [ [ 5.0, 6.0 ] ] ];
var out = zeros3d( [ 2, 2, 2 ] );

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

bternary3d( [ x, y, z, out ], shapes, add );
// out => [ [ [ 9.0, 10.0 ], [ 10.0, 11.0 ] ], [ [ 10.0, 11.0 ], [ 11.0, 12.0 ] ] ]

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 filled3dBy = require( '@stdlib/array/base/filled3d-by' );
var zeros3d = require( '@stdlib/array/base/zeros3d' );
var add = require( '@stdlib/math/base/ops/add3' );
var bternary3d = require( '@stdlib/array/base/broadcasted-ternary3d' );

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

var x = filled3dBy( shapes[ 0 ], discreteUniform( -100, 100 ) );
console.log( x );

var y = filled3dBy( shapes[ 1 ], discreteUniform( -100, 100 ) );
console.log( y );

var z = filled3dBy( shapes[ 2 ], discreteUniform( -100, 100 ) );
console.log( z );

var out = zeros3d( shapes[ 3 ] );
console.log( out );

bternary3d( [ x, y, z, out ], shapes, add );
console.log( out );