As Assad Ebrahim wrote, the problem is with the toolkit. I got another problem in version 3.8.2. that the gnuplot didn't work at all. No plot windows showed and a I needed to close Octave. If someone have the same problem, the solution is to download gnuplot and install it to Octave folder. It replaces old gnuplot and the new one is working.
I have similar symptoms using octave 4.2 when running your code (Cannot close plot windows, plot takes time to appear). When statements don't end with semicolon (;) the command and result will be printed in command window. It SEEMS to me that the command window halts interpretation of code and wait for user to press a valid key (f,b,q) to contunure or abort execution. The halt point is dependent on previously executed code and size of command window, therefore the intermittent nature of these symptoms.
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The problem might be caused by Emacs octave-mode's --no-line-editing switch, you can fix it by M-x customize-variable RET inferior-octave-startup-args RET and change --no-line-editing to --line-editing.
I installed Octave 4 (from here) which has both a GUI and a CLI.However, Octave doesn't seem to be added to the PATH variable, so typing octave or octave-cli into the command line doesn't do anything.Is there a way to fix that (without adding all the other executables in Octave's bin directory to PATH as well)?
Octave maintains a system-wide (or global) package list, and a user-specific (or local) package list. By default in Windows 10, local packages are located at C:\Users\%USERNAME%\octave\. (The \octave folder will be created during the first package install\update if it is not already present.) The global packages are stored in %OCTAVE_HOME%\mingw64\share\octave\packages\, and are available to all users on the machine. Specific locations on your system can be found by typing the following commands at the Octave command line:
Octave versions for Windows prior to 6.1.0 defaulted to always making changes to global packages unless the user specified otherwise. The default is now to follow the same behavior on all platforms, and for all package updates and installations to apply to local or global package locations according to whether or not the user is running with Administrative privileges (on Windows, this is usually accomplished by running as an Administrator privileged account, or starting Octave with the "Run as Administrator" option). Alternatively, some pkg command options can force octave to try to use either the local or global packages.
Note that the included packages shown above are stored in the default global package location within the Octave installation folder. If any 'local' packages were previously installed with another version of windows, they might also appear in the list at the local location. It is recommended that any such packages be uninstalled and reinstalled to guarantee compatibility with the current version of octave.
That will force octave to look for both local and global packages in the set locations to repopulate the list of available packages. Note that 'local' packages always take precedence if the same package is present in both locations.
To use Octave in MSYS2, install the MSYS2 environment following their instructions. At the bash shell (use e.g. "MSYS2 MinGW 64-bit" from the start menu), update the installation by pacman -Syu. After that, install a version of Octave that matches your environment (and the shell you are using), e.g. pacman -S mingw-w64-x86_64-octave.
This will install (among others), the main executables of Octave octave-gui (linked with Qt, i.e., including the "qt" graphics toolkit and the GUI), octave-cli (linked without Qt, i.e., only "fltk" and "gnuplot" graphics toolkits and no GUI), and the wrapper executable octave that dispatches to one of the former executables depending on the used command line switches. The Octave GUI can be started with octave --gui from MSYS2's bash shell, the command line interface (CLI) with octave.
How I installed it:
1. Install Mercurial if you don't have it, add it to the Windows path
2. Clone the repo:hg clone octave-windows
3. Open the MSYS2 shell installed with Octave
4. Install the missing packages: pacman -Sy autoconf automake
5. cd octave-windows
6. make dist
7. On Octave, install it using the full path: pkg install c:\...\octave-windows\release\windows-1.3.1+.tar.gz
How I installed it:
1. Install Mercurial -scm.org/downloads if you
don't have it, add it to the Windows path
2. Clone the repo:hg clone
octave-windows
3. Open the MSYS2 shell installed with Octave
4. Install the missing packages: pacman -Sy autoconf automake
5. cd octave-windows
6. make dist
7. On Octave, install it using the full path: pkg install
c:...\octave-windows\release\windows-1.3.1+.tar.gz
I followed your instructions.
MSYS2shell should be the same cmdshell, right?
At step 4 I am not sure anything is installed because the packages are not
available. Where are they?
By the switch -d a directory is created with these names but not anything
is inside.
At step 5, I couldn't get what cd octave-window should do. Not such a
directory is created.
Failing that, make dist also stopped working at step 6: make: *** No rule
to make target 'dist'. Stop.
The package seems installed correctly at step 7.
At step 5, I couldn't get what cd octave-window should do. Not such a
directory is created.
Failing that, make dist also stopped working at step 6: make: *** No rule to make target 'dist'. Stop.
At step 5, I couldn't get what cd octave-window should do. Not such a
directory is created.
Failing that, make dist also stopped working at step 6: make: *** No rule
to make target 'dist'. Stop.
For OSX, your best best is a binary installer (see _for_MacOS_X), alternatively, you can install from Homebrew, though as of July 6, 2014, this functionality was broken in OSX 10.9. If you use the installer, you might want to add the octave binary folder onto the path. To do so, add to the file .profile (or create it) in your home directory:
Also, Octave does not start any GUI windows - it did before when i had Opensuse 13.1, now on OpenSuse 13.2 - no GUI windows appearing, but i can see the program running as a process in a terminal window.
But I would like to use the new qt plot window that comes with octave 4.0. I really want octave to work as it should. My final option if nothing works is to compile and build octave from source, but I'm reluctant to do that just yet.
Initially I wasn't able to replicate this, but then I tried the octave GUI (which I'd never used before). While octave-cli works fine for me, the gui showed this problem for me too (and a couple others which seem to be due to octave's gui not playing well with a non-reparenting WM). In my case the plot window was not black, but initially showed up with just borders. Once I moved/resized it the plot window controls appeared, but the plot area just maintained a copy of whatever had been behind it.
yes, plotting in octave-cli works. However it seems to be using the old plotting interface. However plotting in octave or octave --no-gui results in that black window. It's a shame really. I will try to see if logging in using Xorg helps, as it could be a wayland thing.
That said, over time I've found a few weird bugs, such as all black plots when saving as eps and plot legends with a lot of space between them if you increase the font size. To work around this I do all the processing in octave then save the data I want to plot and then plot it with gnuplot, which I believe octave can use directly but doesn't really work well. It's a bit of a kludge but gnuplot has not failed me yet when plotting to eps.
Thanks! I needed to compile LIBSVM for 32-bit windows. I downloaded Visual Studio Express 2012 for desktop. That worked. I am using Octave-3.2.4 (not especially for Visual Studio). That worked. I did not need to edit math.h .
We automatically install a Jupyter kernelspec when installing thepython package. This location can be found using jupyter kernelspec list.If the default location is not desired, remove the directory for theoctave kernel, and install using python -m octave_kernel install. Seepython -m octave_kernel install --help for available options.
The command line options to Octave can also be specified with anOCTAVE_CLI_OPTIONS environment variable. The cli options be appended to thedefault opions of --interactive --quiet --no-init-file. Note that theinit file is explicitly called after the kernel has set more off to preventa lockup when the pager is invoked in ~/.octaverc.
An error that starts with gnuplot> set terminal aqua enhanced title can be fixed byadding setenv("GNUTERM","qt"); to ~/.octaverc on MacOS or by installinggunplot-x11 and using setenv("GNUTERM", "X11").
Set the environment variable OCTAVE_EXECUTABLE="octave"echo export OCTAVE_EXECUTABLE=\"octave\" >> ~/.bashrcMake a directory for the temporary plot directories that the kernel uses. This cannot be a hidden directory.mkdir ~/octavePlotsSet plot_dir to point to your plot directory in octave_kernel_config.py.c.OctaveKernel.plot_settings = dict(plot_dir='/octavePlots')where is the absolute path to your home directory. Do not use ~ as this resolves to a different location for Octave-Snap.
Octave is called quietly by means of "System Exec.vi" in "octave_exec.vi". Usually Octave creates a lot of stdout output when starting. To remove unwanted output, you can apply filter keyword, and only stdout output after the keyword will be returned. See a "multiply.m" Octave script. Octave errors are parsed in a simple way to create LabVIEW error, Octave warnings are ignored. In the case of error, call string of Octave is sent to the error description, so you can copy it and test it manually from windows console. e24fc04721
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