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Remove singleton dimensions.
To use in Observable,
removeSingletonDimensions = require( 'https://cdn.jsdelivr.net/gh/stdlib-js/ndarray-base-remove-singleton-dimensions@umd/browser.js' )To vendor stdlib functionality and avoid installing dependency trees for Node.js, you can use the UMD server build:
var removeSingletonDimensions = require( 'path/to/vendor/umd/ndarray-base-remove-singleton-dimensions/index.js' )To include the bundle in a webpage,
<script type="text/javascript" src="https://cdn.jsdelivr.net/gh/stdlib-js/ndarray-base-remove-singleton-dimensions@umd/browser.js"></script>If no recognized module system is present, access bundle contents via the global scope:
<script type="text/javascript">
(function () {
window.removeSingletonDimensions;
})();
</script>Returns an ndarray without singleton dimensions (i.e., dimensions whose size is equal to 1).
var array = require( '@stdlib/ndarray-array' );
// 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 ]- 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.
<!DOCTYPE html>
<html lang="en">
<body>
<script type="text/javascript" src="https://cdn.jsdelivr.net/gh/stdlib-js/ndarray-array@umd/browser.js"></script>
<script type="text/javascript" src="https://cdn.jsdelivr.net/gh/stdlib-js/ndarray-base-numel@umd/browser.js"></script>
<script type="text/javascript" src="https://cdn.jsdelivr.net/gh/stdlib-js/ndarray-ind2sub@umd/browser.js"></script>
<script type="text/javascript" src="https://cdn.jsdelivr.net/gh/stdlib-js/ndarray-base-remove-singleton-dimensions@umd/browser.js"></script>
<script type="text/javascript">
(function () {
// 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 ) );
}
})();
</script>
</body>
</html>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.
See LICENSE.
Copyright © 2016-2024. The Stdlib Authors.