https://github.com/scijs/ndarray

📈 Multidimensional arrays for JavaScript
https://github.com/scijs/ndarray

Last synced: about 2 months ago
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📈 Multidimensional arrays for JavaScript

• Host: GitHub
• URL: https://github.com/scijs/ndarray
• Owner: scijs
• License: mit
• Created: 2013-02-25T17:27:21.000Z (over 11 years ago)
• Default Branch: master
• Last Pushed: 2022-01-29T18:00:01.000Z (over 2 years ago)
• Last Synced: 2024-05-21T10:57:05.886Z (4 months ago)
• Language: JavaScript
• Homepage:
• Size: 98.6 KB
• Stars: 1,189
• Watchers: 39
• Forks: 61
• Open Issues: 21
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
ndarray

=======

Modular multidimensional arrays for JavaScript. 

[![browser support](https://ci.testling.com/mikolalysenko/ndarray.png)

](https://ci.testling.com/mikolalysenko/ndarray)

[![build status](https://secure.travis-ci.org/scijs/ndarray.png)](http://travis-ci.org/scijs/ndarray)

[![stable](https://rawgithub.com/hughsk/stability-badges/master/dist/frozen.svg)](http://github.com/hughsk/stability-badges)

##### Browse a number of ndarray-compatible modules in the [scijs documentation](http://scijs.net/packages)

##### Coming from MATLAB or numpy? See: [scijs/ndarray for MATLAB users](https://github.com/scijs/scijs-ndarray-for-matlab-users)

##### [Big list of ndarray modules](https://github.com/scijs/ndarray/wiki/ndarray-module-list#core-module)

Introduction

============

`ndarrays` provide higher dimensional views of 1D arrays.  For example, here is how you can turn a length 4 typed array into an nd-array:

```javascript

var mat = ndarray(new Float64Array([1, 0, 0, 1]), [2,2])

//Now:

//

// mat = 1 0

//       0 1

//

```

Once you have an nd-array you can access elements using `.set` and `.get`.  For example, here is an implementation of [Conway's game of life](http://en.wikipedia.org/wiki/Conway's_Game_of_Life) using ndarrays:

```javascript

function stepLife(next_state, cur_state) {

  //Get array shape

  var nx = cur_state.shape[0], 

      ny = cur_state.shape[1]

  //Loop over all cells

  for(var i=1; i