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README.md

zerosLike

Create a zero-filled ndarray having the same shape and data type as a provided ndarray.

Usage

var zerosLike = require( '@stdlib/ndarray/base/zeros-like' );

zerosLike( x )

Creates a zero-filled ndarray having the same shape and data type as a provided ndarray.

var getShape = require( '@stdlib/ndarray/shape' );
var zeros = require( '@stdlib/ndarray/base/zeros' );

var x = zeros( 'float64', [ 2, 2 ], 'row-major' );
// returns <ndarray>[ [ 0.0, 0.0 ], [ 0.0, 0.0 ] ]

var y = zerosLike( x );
// returns <ndarray>[ [ 0.0, 0.0 ], [ 0.0, 0.0 ] ]

var sh = getShape( y );
// returns [ 2, 2 ]

Notes

  • Along with data type, shape, and order, the function infers the "class" of the returned ndarray from the provided ndarray. For example, if provided a "base" ndarray, the function returns a base ndarray. If provided a non-base ndarray, the function returns a non-base ndarray.

Examples

var dtypes = require( '@stdlib/ndarray/dtypes' );
var zeros = require( '@stdlib/ndarray/base/zeros' );
var ndarray2array = require( '@stdlib/ndarray/to-array' );
var zerosLike = require( '@stdlib/ndarray/base/zeros-like' );

// Get a list of data types:
var dt = dtypes( 'integer_and_generic' );

// Generate zero-filled arrays...
var x;
var i;
for ( i = 0; i < dt.length; i++ ) {
    x = zerosLike( zeros( dt[ i ], [ 2, 2 ], 'row-major' ) );
    console.log( ndarray2array( x ) );
}

See Also