Home

numpy

  • Juggling Modules For Numpy 2.0 to 1.3 Pickle Conversion
    Thursday, April 8, 2010 - 11:38

    Occasionally one has to jump through a lot of hoops and do some pretty bizzare and unorthadox things when coding. Especially when working with multiple versions of libraries. At work all of our iMacs were recently upgraded to Snow Leopard and Python 2.6 and libraries isntalled (all in 64-bit). Its nice to upgrade . . . when it doesn't break things. Unfortunately during the upgrade numpy 1.4 was installed. Now this was only unfortunate because the super computer we also need to run on has numpy 1.3 which won't unpickle objects pickled with numpy 1.4.

  • Calculating Minimum Volume Bounding Box
    Thursday, February 25, 2010 - 12:31

    In my work I ended up needing to know the minimum volume bounding box (MVBB) of a given of points in 3d. This is also called the oriented bounding box (OBB). Finding the axis-aligned bounding box (AABB) is a simple task, however it can have a volume much larger than needed. Come to find out, finding the minimum volume bounding box is a very difficult problem with several techniques for finding it. However, I didn't find any useful code for finding the MVBB.

  • The Power of Generators: Simple Animation Example for MatPlotLib
    Monday, April 6, 2009 - 13:16

    I have for some time now been using matplotlib to do all my graphing in python. Its a great package! Recently I've been wanting to do basic animation of graphs, while you'd think it would be simple has turned into a bit of a trek. There is a simple animation example found here: http://matplotlib.sourceforge.net/examples/animation/simple_anim_gtk.html it works okay, but if you try to move the window it freezes, and you can't use anything on the toolbar.