NumPy is a Python module for numerical calculations, using C/C++, Fortran, BLAS and LAPACK. Numpy contains a powerful N-dimensional array object, sophisticated (broadcasting) functions, tools for integrating C/C++ and Fortran code, and useful linear algebra, Fourier transform, and random number capabilities.

Many softwares use NumPy. For example, MatPlotLib is commonly employed with NumPy, and the PyLab mode is NumPy + MatPlotLib.

There are 2 versions of NumPy to choose to install on MeeGo Harmattan :
- NumPy 1.9.1 was released in 02/11/2014, and ported to MeeGo Harmattan in the same day;
- NumPy 1.4.1 (version released in 22/04/2010) provided by Nokia repositories.

Version history :
- NumPy 1.9.1 (02/11/2014) ported to MeeGo Harmattan in 02/11/2014;
- NumPy 1.9.0 (07/09/2014) ported to MeeGo Harmattan in 26/09/2014;
- NumPy 1.8.2 (08/09/2014) second release for MeeGo Harmattan (25/09/2014). NumPy is visible in MeeGo Harmattan Application Manager and is installed easier using Warehouse;
- NumPy 1.8.2 (08/09/2014) ported to MeeGo Harmattan in 18/09/2014, first release;
- NumPy 1.7.1 (07/04/2013) ported to MeeGo Harmattan in 05/06/2013;
- NumPy 1.7.0 (10/02/2013), and I've ported it to MeeGo Harmattan one day later.

So, install NumPy 1.9.1 only if NumPy 1.4.1 doesn't satisfy your needs. For example, MatPlotLib <= 1.2.0 works with NumPy 1.4.1, but Scipy >= 0.9 needs NumPy >= 1.5.0.

NumPy 1.9.1 Harmattan is based on Debian experimental version and NumPy 1.9.0 source code, but without Python 3 support, no documentation package, adapted dependencies to MeeGo Harmattan, etc.

Installing NumPy 1.9.1 on MeeGo Harmattan

NumPy has 2 repositories options, so it can be :
- easily installed by using Warehouse / OpenRepos.net. Install Warehouse (OpenRepos.net client) for MeeGo Harmattan, then open Warehouse, search for "NumPy", enable the repository and install;
- installed by using my Harmattan repository.

Warehouse showing NumPy 1.9.0 available to install :


The installation of NumPy 1.9.1 and its dependencies (libgfortran3, libblas3gf e liblapack3gf) takes 25 MB, while NumPy 1.4.1 takes 22 MB.

Using NumPy on MeeGo Harmattan

It is strongly suggested to also install IPython for MeeGo Harmattan, so the interactive use of NumPy becomes a lot easier
With the new IPython 0.13.2 Harmattan, there are 3 interfaces : IPython terminal, IPython Notebook and IPython Qt console.

A simple example (just type the text after the "In [n]:" lines) in IPython terminal :

Note that "help(np)" (np is an alias to numpy) shows a long help about NumPy.

Time to load NumPy : 0.4-0.5 s (v1.9.0), 0.6-0.7 s (v1.7.1, v1.8.2), 0.4-0.5 s (v1.4.1) by using 'from numpy import *' or 'import numpy'.

Documentation for NumPy

NumPy documentation is in the official NumPy site with NumPy User Guide and NumPy Reference Guide, both online as well as in PDF and other formats. NumPy help in interactive mode is available by typing :
- "help(numpy)" (after an "import numpy"), see the above screenshot;
- "help(pylab.np)", when using PyLab.

Python for MeeGo Harmattan

SciPy 0.14.0, which supplements NumPy 1.9.1, is also available for MeeGo Harmattan. See the SciPy for MeeGo Harmattan topic.

More Python packages are listed in the Python Harmattan Wiki. See also OpenRepos.net.