About stdlib...
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Fill an input
ndarraywith a specified value.
npm install @stdlib/ndarray-fillAlternatively,
- To load the package in a website via a
scripttag without installation and bundlers, use the ES Module available on theesmbranch (see README). - If you are using Deno, visit the
denobranch (see README for usage intructions). - For use in Observable, or in browser/node environments, use the Universal Module Definition (UMD) build available on the
umdbranch (see README).
The branches.md file summarizes the available branches and displays a diagram illustrating their relationships.
To view installation and usage instructions specific to each branch build, be sure to explicitly navigate to the respective README files on each branch, as linked to above.
var fill = require( '@stdlib/ndarray-fill' );Fills an input ndarray with a specified value.
var zeros = require( '@stdlib/ndarray-zeros' );
var ndarray2array = require( '@stdlib/ndarray-to-array' );
var x = zeros( [ 3, 1, 2 ], {
'dtype': 'float64'
});
var y = fill( x, 10.0 );
// returns <ndarray>
var bool = ( y === x );
// returns true
var arr = ndarray2array( x );
// returns [ [ [ 10.0, 10.0 ] ], [ [ 10.0, 10.0 ] ], [ [ 10.0, 10.0 ] ] ]The function accepts the following arguments:
- x: array-like object containing an input
ndarray. - value: scalar value.
- An input
ndarraymust be writable. If provided a read-onlyndarray, the function throws an error. - If
valueis a number andxhas a complex data type, the function fills an inputndarraywith a complex number whose real component equals the provided scalarvalueand whose imaginary component is zero. - A
valuemust be able to safely cast to the inputndarraydata type. Scalar values having floating-point data types (both real and complex) are allowed to downcast to a lower precision data type of the same kind (e.g., a scalar double-precision floating-point number can be used to fill a'float32'inputndarray). - The function mutates the input
ndarray.
var zeros = require( '@stdlib/ndarray-zeros' );
var ndarray2array = require( '@stdlib/ndarray-to-array' );
var fill = require( '@stdlib/ndarray-fill' );
// Create a zero-filled ndarray:
var x = zeros( [ 5, 2 ], {
'dtype': 'generic'
});
console.log( ndarray2array( x ) );
// Fill the ndarray with a scalar value:
fill( x, 10.0 );
console.log( ndarray2array( x ) );@stdlib/ndarray-fill-by: fill an input ndarray according to a callback function.@stdlib/ndarray-map: apply a callback to elements in an input ndarray and assign results to elements in a new output ndarray.@stdlib/ndarray-zeros: create a zero-filled ndarray having a specified shape and data type.
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.
See LICENSE.
Copyright © 2016-2025. The Stdlib Authors.
