Generate a linearly spaced numeric array whose elements increment by 1 starting from one and having the same length and data type as a provided input array.
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> Generate a linearly spaced numeric array whose elements increment by 1 starting from one and having the same length and data type as a provided input array.
``bash`
npm install @stdlib/array-one-to-like
`javascript`
var oneToLike = require( '@stdlib/array-one-to-like' );
#### oneToLike( x\[, dtype] )
Generates a linearly spaced numeric array whose elements increment by 1 starting from one and having the same length and data type as a provided input array x.
`javascript`
var arr = oneToLike( [ 0, 0, 0, 0, 0 ] );
// returns [ 1, 2, 3, 4, 5 ]
The function recognizes the following data types:
- float64: double-precision floating-point numbers (IEEE 754)float32
- : single-precision floating-point numbers (IEEE 754)complex128
- : double-precision complex floating-point numberscomplex64
- : single-precision complex floating-point numbersint32
- : 32-bit two's complement signed integersuint32
- : 32-bit unsigned integersint16
- : 16-bit two's complement signed integersuint16
- : 16-bit unsigned integersint8
- : 8-bit two's complement signed integersuint8
- : 8-bit unsigned integersuint8c
- : 8-bit unsigned integers clamped to 0-255
- : generic JavaScript values
By default, the output array data type is inferred from the provided array x. To return an array having a different data type, provide a dtype argument.
`javascript`
var arr = oneToLike( [ 0, 0, 0, 0, 0 ], 'int32' );
// returns
- For complex number arrays, each element of the returned array has an imaginary component equal to 0.
`javascript
var sort2hp = require( '@stdlib/blas-ext-base-gsort2hp' );
var discreteUniform = require( '@stdlib/random-array-discrete-uniform' );
var oneToLike = require( '@stdlib/array-one-to-like' );
// Generate an array of random numbers:
var opts = {
'dtype': 'generic'
};
var x = discreteUniform( 10, 100, 200, opts );
// Generate a linearly-spaced array:
var y = oneToLike( x );
// Create a temporary array to avoid mutation:
var tmp = x.slice();
// Sort y according to the sort order of x:
sort2hp( x.length, 1, tmp, 1, y, 1 );
console.log( x );
console.log( y );
`
*
- [@stdlib/array-full-like][@stdlib/array/full-like]: create a filled array having the same length and data type as a provided array.
- [@stdlib/array-ones-like][@stdlib/array/ones-like]: create an array filled with ones and having the same length and data type as a provided array.
- [@stdlib/array-one-to][@stdlib/array/one-to]: generate a linearly spaced numeric array whose elements increment by 1 starting from one.
- [@stdlib/array-zero-to-like][@stdlib/array/zero-to-like]: generate a linearly spaced numeric array whose elements increment by 1 starting from zero and having the same length and data type as a provided input array.
*
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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---
See [LICENSE][stdlib-license].
Copyright © 2016-2026. The Stdlib [Authors][stdlib-authors].
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[npm-url]: https://npmjs.org/package/@stdlib/array-one-to-like
[test-image]: https://github.com/stdlib-js/array-one-to-like/actions/workflows/test.yml/badge.svg?branch=v0.2.3
[test-url]: https://github.com/stdlib-js/array-one-to-like/actions/workflows/test.yml?query=branch:v0.2.3
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[stdlib]: https://github.com/stdlib-js/stdlib
[stdlib-authors]: https://github.com/stdlib-js/stdlib/graphs/contributors
[umd]: https://github.com/umdjs/umd
[es-module]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Modules
[deno-url]: https://github.com/stdlib-js/array-one-to-like/tree/deno
[deno-readme]: https://github.com/stdlib-js/array-one-to-like/blob/deno/README.md
[umd-url]: https://github.com/stdlib-js/array-one-to-like/tree/umd
[umd-readme]: https://github.com/stdlib-js/array-one-to-like/blob/umd/README.md
[esm-url]: https://github.com/stdlib-js/array-one-to-like/tree/esm
[esm-readme]: https://github.com/stdlib-js/array-one-to-like/blob/esm/README.md
[branches-url]: https://github.com/stdlib-js/array-one-to-like/blob/main/branches.md
[stdlib-license]: https://raw.githubusercontent.com/stdlib-js/array-one-to-like/main/LICENSE
[@stdlib/array/full-like]: https://www.npmjs.com/package/@stdlib/array-full-like
[@stdlib/array/ones-like]: https://www.npmjs.com/package/@stdlib/array-ones-like
[@stdlib/array/one-to]: https://www.npmjs.com/package/@stdlib/array-one-to
[@stdlib/array/zero-to-like]: https://www.npmjs.com/package/@stdlib/array-zero-to-like