Return the number of ndarray dimensions.
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> Return the number of [ndarray][@stdlib/ndarray/ctor] dimensions.
``bash`
npm install @stdlib/ndarray-ndims
`javascript`
var ndims = require( '@stdlib/ndarray-ndims' );
#### ndims( x )
Returns the number of [ndarray][@stdlib/ndarray/ctor] dimensions.
`javascript
var zeros = require( '@stdlib/ndarray-zeros' );
var x = zeros( [ 3, 2, 3 ] );
// returns
var n = ndims( x );
// returns 3
`
`javascript
var zeros = require( '@stdlib/ndarray-zeros' );
var slice = require( '@stdlib/ndarray-slice' );
var E = require( '@stdlib/slice-multi' );
var S = require( '@stdlib/slice-ctor' );
var ndims = require( '@stdlib/ndarray-ndims' );
// Create an array:
var x = zeros( [ 10, 10, 10, 10 ] );
// returns
// 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,:
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 number of dimensions in each slice...
var s;
var i;
for ( i = 0; i < slices.length; i++ ) {
s = slice( x, slices[ i ] );
console.log( '%s => %d dimensions', s.shape.join( 'x' ), ndims( s ) );
}
`
*
- [@stdlib/ndarray-array][@stdlib/ndarray/array]: multidimensional arrays.
- [@stdlib/ndarray-ctor][@stdlib/ndarray/ctor]: multidimensional array constructor.
- [@stdlib/ndarray-numel][@stdlib/ndarray/numel]: return the number of elements in an ndarray.
- [@stdlib/ndarray-shape][@stdlib/ndarray/shape]: return the shape of a provided ndarray.
*
This package is part of [stdlib][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][stdlib], see the main project [repository][stdlib].
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---
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[deno-url]: https://github.com/stdlib-js/ndarray-ndims/tree/deno
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[@stdlib/ndarray/shape]: https://www.npmjs.com/package/@stdlib/ndarray-shape