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removeSingletonDimensions

Remove singleton dimensions.

Usage

import removeSingletonDimensions from 'https://cdn.jsdelivr.net/gh/stdlib-js/ndarray-base-remove-singleton-dimensions@deno/mod.js';

removeSingletonDimensions( x )

Returns an ndarray without singleton dimensions (i.e., dimensions whose size is equal to 1).

import array from 'https://cdn.jsdelivr.net/gh/stdlib-js/ndarray-array@deno/mod.js';

// Create a 1x2x2 ndarray:
var x = array( [ [ [ 1, 2 ], [ 3, 4 ] ] ] );
// returns <ndarray>

// Remove singleton dimensions:
var y = removeSingletonDimensions( x );
// returns <ndarray>

var sh = y.shape;
// returns [ 2, 2 ]

Notes

If a provided ndarray does not have any singleton dimensions, the function returns the provided ndarray unchanged.
If a provided ndarray does have singleton dimensions, the function returns a new ndarray view.

Examples

import array from 'https://cdn.jsdelivr.net/gh/stdlib-js/ndarray-array@deno/mod.js';
import numel from 'https://cdn.jsdelivr.net/gh/stdlib-js/ndarray-base-numel@deno/mod.js';
import ind2sub from 'https://cdn.jsdelivr.net/gh/stdlib-js/ndarray-ind2sub@deno/mod.js';
import removeSingletonDimensions from 'https://cdn.jsdelivr.net/gh/stdlib-js/ndarray-base-remove-singleton-dimensions@deno/mod.js';

// Create a 5-dimensional array:
var x = array( [ [ 1, 2 ], [ 3, 4 ] ], {
    'ndmin': 5
});
// returns <ndarray>

// Remove singleton dimensions:
var y = removeSingletonDimensions( x );
// returns <ndarray>

// Retrieve the shape:
var sh = y.shape;
// returns [ 2, 2 ]

// Retrieve the number of elements:
var N = numel( sh );

// Loop through the array elements...
var i;
for ( i = 0; i < N; i++ ) {
    console.log( 'Y[%s] = %d', ind2sub( sh, i ).join( ', ' ), y.iget( i ) );
}

Notice

This package is part of stdlib, a standard library 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

License

See LICENSE.

Copyright

Copyright © 2016-2024. The Stdlib Authors.

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