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Return a view of an input ndarray in which the order of elements along each dimension is reversed.
import reverse from 'https://cdn.jsdelivr.net/gh/stdlib-js/ndarray-base-reverse@esm/index.mjs';Returns a view of an input ndarray in which the order of elements along each dimension is reversed.
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 sh = x.shape;
// returns [ 3, 2 ]
var arr = ndarray2array( x );
// returns [ [ 1.0, 2.0 ], [ 3.0, 4.0 ], [ 5.0, 6.0 ] ]
var y = reverse( x, false );
// returns <ndarray>
sh = y.shape;
// returns [ 3, 2 ]
arr = ndarray2array( y );
// returns [ [ 6.0, 5.0 ], [ 4.0, 3.0 ], [ 2.0, 1.0 ] ]The function accepts the following arguments:
- x: input ndarray.
- 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 reverse from 'https://cdn.jsdelivr.net/gh/stdlib-js/ndarray-base-reverse@esm/index.mjs';
// Create a linear ndarray buffer:
var buf = zeroTo( 16 );
// Create a one-dimensional ndarray:
var x1 = array( buf, {
'shape': [ 16 ]
});
// Reverse element order:
var y1 = reverse( x1, false );
// returns <ndarray>
var a1 = ndarray2array( y1 );
// returns [ 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0 ]
// Create a two-dimensional ndarray:
var x2 = array( buf, {
'shape': [ 4, 4 ]
});
// Reverse element order:
var y2 = reverse( x2, false );
// returns <ndarray>
var a2 = ndarray2array( y2 );
// returns [ [ 15, 14, 13, 12 ], [ 11, 10, 9, 8 ], [ 7, 6, 5, 4 ], [ 3, 2, 1, 0 ] ]
// Create a three-dimensional ndarray:
var x3 = array( buf, {
'shape': [ 2, 4, 2 ]
});
// Reverse element order:
var y3 = reverse( x3, false );
// returns <ndarray>
var a3 = ndarray2array( y3 );
// returns [ [ [ 15, 14 ], [ 13, 12 ], [ 11, 10 ], [ 9, 8 ] ], [ [ 7, 6 ], [ 5, 4 ], [ 3, 2 ], [ 1, 0 ] ] ]
</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.
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