Pyextjs NPM | npm.io

PyExtJS

(Python Extension Packages in Javascript)

What is PyExtJs?
Installation
Latest source code
Bug reports
Wiki Array creation routines Array manipulation routines * Mathematical functions
Performance

What is PyExtJs?

Python Extension Packages in Javascript is open-source implementation of some common libraries used in the scientific python programming.
The main goal of this project is to improve migration of python language to javascript.

License

License: MIT/X11

Installation

on node.js

	$ npm install pyextjs

	> require('pyextjs');

	> numpy.linspace(2.0,3.0,5);

on the browser

Just include the following libraries in your html.

<!doctype html>
<html>
  <head>
    <script type="text/javascript" src="../js/ss.js"></script>
    <script type="text/javascript" src="../js/Numpy.js"></script>
    <script type="text/javascript" src="../js/PolySolve.js"></script>
    <script type="text/javascript" src="../js/Scipy.js"></script>
    <script type="text/javascript">

       // Use Numpy & Scipy like python in javascript

       function ready() {
           var ls = numpy.linspace(2.0,3.0,5);
       }

    </script>
  </head>
</html>

Latest source code

https://github.com/fernandezajp/PyExtJs

Bug reports

https://github.com/fernandezajp/PyExtJs/issues

##Performance

This is very important, the test was executed in a MacBookPro i5

The python Code:

import time
import numpy

def test():
    x = numpy.array([0.0, 1.0, 2.0, 3.0,  4.0,  5.0])
    y = numpy.array([0.0, 0.8, 0.9, 0.1, -0.8, -1.0])

    start = time.time()
    for num in range(1,10000):
        numpy.polyfit(x, y, 3)
    end = time.time()

    microsecs = end - start
    print microsecs * 1000

test()

function test() {
    x = [0.0, 1.0, 2.0, 3.0,  4.0,  5.0];
    y = [0.0, 0.8, 0.9, 0.1, -0.8, -1.0];

    var start = +new Date();
    for (var i=0;i<10000;i++)
        numpy.polyfit(x, y, 3)
    var end =  +new Date();
    var diff = end - start;
    alert(diff);
}

test();

Python: 1604 milliseconds
Javascript: 14 milliseconds

Javascript! Very fast!!!