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Return the strides of a provided ndarray.
import strides from 'https://cdn.jsdelivr.net/gh/stdlib-js/ndarray-base-strides@esm/index.mjs';Returns the strides of a provided ndarray.
import zeros from 'https://cdn.jsdelivr.net/gh/stdlib-js/ndarray-zeros@esm/index.mjs';
var x = zeros( [ 3, 2, 3 ] );
// returns <ndarray>
var st = strides( x, false );
// returns [ 6, 3, 1 ]When copy is false, changes to the returned strides array may mutate the input ndarray strides. If there is a chance that the returned strides will be mutated (either directly or by downstream consumers), set copy to true to prevent unintended side effects.
import zeros from 'https://cdn.jsdelivr.net/gh/stdlib-js/ndarray-zeros@esm/index.mjs';
var x = zeros( [ 3, 2, 3 ] );
// returns <ndarray>
var st = strides( x, true );
// returns [ 6, 3, 1 ]
var bool = ( x.strides === st );
// returns false<!DOCTYPE html>
<html lang="en">
<body>
<script type="module">
import zeros from 'https://cdn.jsdelivr.net/gh/stdlib-js/ndarray-zeros@esm/index.mjs';
import slice from 'https://cdn.jsdelivr.net/gh/stdlib-js/ndarray-slice@esm/index.mjs';
import E from 'https://cdn.jsdelivr.net/gh/stdlib-js/slice-multi@esm/index.mjs';
import S from 'https://cdn.jsdelivr.net/gh/stdlib-js/slice-ctor@esm/index.mjs';
import strides from 'https://cdn.jsdelivr.net/gh/stdlib-js/ndarray-base-strides@esm/index.mjs';
// Create an array:
var x = zeros( [ 10, 10, 10, 10 ] );
// returns <ndarray>
// Define some slices:
var slices = [
// :,:,:,:
E( null, null, null, null ),
// 5:10,4,2:4,::-1
E( S( 5, 10 ), 4, S( 2, 4 ), S( null, null, -1 ) ),
// :,:,2,:<
8000
/span>
E( null, null, 2, null ),
// 1,2,3,:
E( 1, 2, 3, null ),
// 1,3,::2,4::2
E( 1, 3, S( null, null, 2 ), S( 4, null, 2 ) )
];
// Determine the strides of each slice...
var s;
var i;
for ( i = 0; i < slices.length; i++ ) {
s = slice( x, slices[ i ] );
console.log( '(%s) => (%s)', x.strides.join( ',' ), strides( s, false ).join( ',' ) );
}
</script>
</body>
</html>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.
See LICENSE.
Copyright © 2016-2025. The Stdlib Authors.
