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Return an array containing a truncated view of an input ndarray and a view of the first element(s) along a specified dimension.
import shift from 'https://cdn.jsdelivr.net/gh/stdlib-js/ndarray-base-shift@esm/index.mjs';Returns an array containing a truncated view of an input ndarray and a view of the first element(s) along a specified dimension.
import ndarray from 'https://cdn.jsdelivr.net/gh/stdlib-js/ndarray-ctor@esm/index.mjs';
import ndarray2array from 'https://cdn.jsdelivr.net/gh/stdlib-js/ndarray-to-array@esm/index.mjs';
var buffer = [ 1.0, 2.0, 3.0, 4.0, 5.0, 6.0 ];
var shape = [ 3, 2 ];
var strides = [ 2, 1 ];
var offset = 0;
var x = ndarray( 'generic', buffer, shape, strides, offset, 'row-major' );
// returns <ndarray>
var arr = ndarray2array( x );
// returns [ [ 1.0, 2.0 ], [ 3.0, 4.0 ], [ 5.0, 6.0 ] ]
var y = shift( x, 0, false );
// returns [ <ndarray>, <ndarray> ]
arr = ndarray2array( y[ 0 ] );
// returns [ [ 3.0, 4.0 ], [ 5.0, 6.0 ] ]
arr = ndarray2array( y[ 1 ] );
// returns [ [ 1.0, 2.0 ] ]The function accepts the following arguments:
- x: input ndarray. Must have one or more dimensions.
- dim: dimension along which to perform the operation. If provided an integer less than zero, the dimension index is resolved relative to the last dimension, with the last dimension corresponding to the value
-1. - writable: boolean indicating whether a returned ndarray should be writable.
- The
writableparameter only applies to ndarray constructors supporting read-only instances.
<!DOCTYPE html>
<html lang="en">
<body>
<script type="module">
import array from 'https://cdn.jsdelivr.net/gh/stdlib-js/ndarray-array@esm/index.mjs';
import ndarray2array from 'https://cdn.jsdelivr.net/gh/stdlib-js/ndarray-to-array@esm/index.mjs';
import zeroTo from 'https://cdn.jsdelivr.net/gh/stdlib-js/array-base-zero-to@esm/index.mjs';
import shift from 'https://cdn.jsdelivr.net/gh/stdlib-js/ndarray-base-shift@esm/index.mjs';
// Create a linear ndarray buffer:
var buf = zeroTo( 27 );
// Create an ndarray which is a stack of three 3x3 matrices:
var x = array( buf, {
'shape': [ 3, 3, 3 ]
});
// Remove the first row from each matrix:
var y = shift( x, 1, false );
// returns [ <ndarray>, <ndarray> ]
console.log( ndarray2array( y[ 0 ] ) );
console.log( ndarray2array( y[ 1 ] ) );
</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 © 2016-2026. The Stdlib Authors.
