sliceShape

Compute the shape of a normalized multi-slice.

Installation

npm install @stdlib/slice-base-shape

Usage

var sliceShape = require( '@stdlib/slice-base-shape' );

sliceShape( slice )

Returns the shape of a normalized multi-slice.

var S = require( '@stdlib/slice-ctor' );
var MultiSlice = require( '@stdlib/slice-multi' );
var normalizeMultiSlice = require( '@stdlib/slice-base-normalize-multi-slice' );

var s = new MultiSlice( S( -4, null, -1 ), S( 2, 10, 1 ) );
// returns <MultiSlice>

s = normalizeMultiSlice( s, [ 10, 10 ], false );
// returns <MultiSlice>

var sh = sliceShape( s );
// returns [ 7, 8 ]

Examples

var S = require( '@stdlib/slice-ctor' );
var MultiSlice = require( '@stdlib/slice-multi' );
var normalizeMultiSlice = require( '@stdlib/slice-base-normalize-multi-slice' );
var sliceShape = require( '@stdlib/slice-base-shape' );

var s1 = new MultiSlice( S( 3, null, -1 ), S( 3, 7, 1 ) );
var s2 = normalizeMultiSlice( s1, [ 10, 10 ], false );
var sh = sliceShape( s2 );
console.log( '%s => %s', s1.toString(), s2.toString() );
console.log( '[ %s ]', sh.join( ', ' ) );
// => '[ 4, 4 ]'

s1 = new MultiSlice( null, S( -1, -8, -2 ) );
s2 = normalizeMultiSlice( s1, [ 11, 12 ], false );
sh = sliceShape( s2 );
console.log( '%s => %s', s1.toString(), s2.toString() );
console.log( '[ %s ]', sh.join( ', ' ) );
// => '[ 11, 4 ]'

s1 = new MultiSlice( S( null, null, 1 ), null );
s2 = normalizeMultiSlice( s1, [ 11, 12 ], false );
sh = sliceShape( s2 );
console.log( '%s => %s', s1.toString(), s2.toString() );
console.log( '[ %s ]', sh.join( ', ' ) );
// => '[ 11, 12 ]'

s1 = new MultiSlice( S( 5, 5, 1 ), null );
s2 = normalizeMultiSlice( s1, [ 11, 12 ], false );
sh = sliceShape( s2 );
console.log( '%s => %s', s1.toString(), s2.toString() );
console.log( '[ %s ]', sh.join( ', ' ) );
// => '[ 0, 12 ]'

s1 = new MultiSlice( S( 5, 5, 1 ), S( 3, 3, 1 ) );
s2 = normalizeMultiSlice( s1, [ 10, 10 ], false );
sh = sliceShape( s2 );
console.log( '%s => %s', s1.toString(), s2.toString() );
console.log( '[ %s ]', sh.join( ', ' ) );
// => '[ 0, 0 ]'

Notice

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.

Community

License

See LICENSE.

Copyright

Copyright © 2016-2024. The Stdlib Authors.