Home > Machine Learning > Fix Octave 3.2.4 Plotting Hang Problem in Windows 8.1

Fix Octave 3.2.4 Plotting Hang Problem in Windows 8.1


For the last few weeks I’ve been following Machine Learning from Coursera. It’s a very awesome website. It’s also FREE.

I learn Machine Learning because that’s a new area that seems interesting in this Big Data World. Until now I think totally our job as software developer is to create application that save our customer data and rarely analyzing it. Of course we provide report but I don’t think that’s enough nowadays.

Machine Learning course use Octave as a programming tools. You can think that as a free and open source MATLAB like program without User Interface. . You can do a lot a computation and prototyping faster there compare to the common programming language as c# or java. But I think for production you need to turn that into real programming language.

The problem I have with Octave it’s a Console Apps. It’s really sad for developer that have been used to Visual Studio for a long time. But we can do plotting from there. That’s really awesome and awkward. Smile But its fun.

The problem I have with running Octave in Windows 8.1 is the plotting windows hang after showing. I search the solution in the internet and finally find two line that solve that Hang problem. Seems that’s a library conflict in Octave

Just need to run this command on Octave CLI.

pkg rebuild -noauto oct2mat

pkg unload oct2mat




  1. July 13, 2014 at 4:01 pm

    Thanks very much. You’ve helped me a lot!

  2. Arvinder Kumar
    June 12, 2016 at 1:51 pm

    The most probable reason is that your default graphics toolkit is either ‘fltk’ or ‘qt’.
    Write graphics_toolkit and press enter.
    it will show either of ‘fltk’ or ‘qt’ or ‘gnuplot’.
    In my case, it was ‘qt’.
    I changed it to ‘gnuplot’.
    use graphics_toolkit(‘gnuplot’); but it was too slow.
    Then I used graphics_toolkit(‘fltk’) and it is working fine.
    Please note that you might have to use this command everytime you restart your Octave CLI.

  1. July 7, 2014 at 3:29 am
  2. July 7, 2014 at 3:32 am
  3. July 7, 2014 at 3:32 am

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