Questions tagged [octave]
GNU Octave is a high-level interpreted language, primarily intended for numerical computations.
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Octave GUI on Mac is not able to open a file
I entered this code on my octave GUI on Mac:
3.> cd /Users/Sudipta/Downloads
warning: load_path: .: Operation not permitted
QKqueueFileSystemWatcherEngine::addPaths: open: Operation not permitted
...
0
votes
1
answer
84
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Linker Issue(s) with Compilation Configuration Settings on Catalina for Building Octave
I am getting linker errors building Octave on OS X 10.15.7 with clang++.
E.g.
"bsxfun_add(intNDArray<octave_int > const&, intNDArray<octave_int > const&)", referenced ...
0
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2
answers
790
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How to install this extension in Octave (pcbmodelgen for openEMS)
I am not understanding how to install this extension called pcbmodelgen, it is for openEMS EM simulation software which runs in Octave. I am using Windows 10, I already have openEMS up and running and ...
0
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1
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182
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Windows 10 task scheduler does not run Octave files
I want to run a complex m-file using GNU Octave 5.2 on Windows 10. I stripped it down to a very simple example that also does not work:
C:\test\start_test.bat:
call C:\Tools\Octave\mingw64\bin\octave-...
3
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4
answers
27k
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VBS script execution blocked on Windows 10
Posting this question on behalf of GNU Octave trying to troubleshoot execution problems. We've recently had a handful of Windows users install the software and be unable to run the program. Often ...
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2
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Cannot find script file "C:\Octave\Octave-5.2.0\octave.vbs"
I get this script error message every time I open Octave (CLI and GUI).
When I "Open file location" it opens the folder and highlights the file "wscript.exe"
I thought octave was missing that file so ...
1
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1
answer
1k
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Octave 5.1.0 -Symbolic package installation error
I just installed Octave 5.1.0 and need to use the symbolic and control packages with it on my Windows 10 machine.
When I first opened the application, I tried this to install Symbolic:
>>pkg ...
1
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1
answer
71
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Calculating Large Number Power
I am actually looking for a solution to be able to calculate this Excel formula:
=1-PERMUT(1.15*10^77,358*10^7)/(1.15*10^77)^(358*10^7)
I tried to solve it in Octave too.
Is there any solution for ...
0
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1
answer
357
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Octave - symbolic package using old version of sympy
I am trying to use symbolic package in Octave (4.2.2). When I try to load the package, I receive the following error:
"Symbolic pkg v2.8.0: error: SymPy version 1.1.1 found but is too old (1.2 ...
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1
answer
5k
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Octave GUI doesn't come up on windows 10 x64
(A) I installed Octave 4.4.1 on my machine running Windows 10 x64 version. I installed it at d:\Octave.
(B) When I click the desktop shortcut "GNU Octave (GUI)" after installation, it opens up Octave....
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140
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Remove description / information when starting octave
Everytime I run octave, the following description/information displays on the screen, is there anyway the following doesn't shows up..
{
GNU Octave, version 3.8.1
Copyright (C) 2014 John W. Eaton ...
2
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1
answer
5k
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I can not find the octave.exe after installing octave
When installing oct2py library on Python, I was required to have GNU Octave installed in my path, in another word, setx PATH "%PATH%; where the folder has the file “octave.exe”.
However, I can not ...
2
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1
answer
3k
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How do I start Octave GUI from zip file install
I downloaded windows 32 zip file version of Octave from here
I do not want to use the installer to fully install Octave and would prefer to use it through the zip file extraction
I can start ...
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1
answer
2k
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Matlab/Octave Solving Matrix Using Gauss Seidel not Converging
Something totally impossible is happening. I have run the following code multiple times on the same Matrix and always converged to a solution using the Gauss Seidel method within 10 iterations.
My ...
8
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1
answer
9k
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Suppress "qt5ct: using qt5ct plugin" message
Every time Octave draws a figure (eg graph), I get the following message:
qt5ct: using qt5ct plugin
How do I suppress it?
2
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1
answer
3k
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Blank command prompt in Windows using Octave
I'm using Octave 3.6.4 on Windows 10. All appears to be working ok, except there's no command prompt.
I know that you can Customize the prompt using PS1, but that still leaves it blank.
Here's a ...
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1
answer
2k
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How to run Octave scripts from bash?
pavel@pavel-VirtualBox:~/projects/csv_converted$ sh plot.sh
plot.sh: 2: plot.sh: Syntax error: "(" unexpected
pavel@pavel-VirtualBox:~/projects/csv_converted$ ./plot.sh
'usr/bin/octave-cli: invalid ...
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1
answer
138
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Where do I find a live CD with octave?
I'm working on a project involving octave. It's difficult to tie up my work computer with running the calculations so I thought to do it on an old laptop. That computer doesn't have an OS currently so ...
0
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1
answer
101
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Viewing exacution of a single file in GNU Octave (echo fcnname on)
Question is simply: in MATLAB, you could simply use echo myFun on to set the echo status of a single function m-file to on, which then shows you each of the lines executed.
In GNU Octave, however, ...
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1
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Installing Octave-4.0.0 on CentOS yields QtOpenGL linking error
I am in the process of trying to install Octave-4.0.0 on a CentOS 6 cluster. Octave has 20+ dependencies, and it is unclear which versions of each dependency to use. Since yum only has Octave-3.4.3, ...
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2
answers
11k
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How to add Octave CLI to the system PATH variable in Windows?
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....
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1
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Installing pstoedit via macports is failing
I'm in the process of installing octave through macports (which btw was a huge pain in the afternoon), after it compiled for nearly a day, macports is installing some last dependencies, one of them is ...
2
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1
answer
2k
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Show Octave plot from shell script
If I invoke Octave to plot something, it needs the interactive prompt to stay running and show the plot.
When running from the command line, the --persist option will force Octave to keep open after ...
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2
answers
1k
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Creating a program shortcut that runs octave through cmder
In response to a previous question (Adding keyboard shortcuts for command prompt on Windows 7) I asked on this site I am now using cmder instead of command prompt as it is more user-friendly (as it ...
0
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0
answers
450
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installing octave on OS X - get error and not sure how to fix
I have done a brew update && brew upgrade and
brew install octave --without-docs
afte a while I get:
patching file libgui/qterminal/libqterminal/unix/ExtendedDefaultTranslator_mac.h
...
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1
answer
364
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Minimum packages required for Ubuntu Server to run Octave 3.8.x with GUI
I have a Ubuntu 14.0 server with no graphical interface. I created this server only to use Octave on it. Now that there is a GUI for the recent version of Octave 3.8.x available I wanna know what is ...
0
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2
answers
450
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How to disabe the beep in Octave 3.8.0 GUI on Windows 7
The octave 3.8.0 experimental GUI is producing a warning beep in the console if, e.g. tab is pressed and there's no unique way to continue the typed command. How do I disable this beep?
Under 3.6.4, ...
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1
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792
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Why does emacs start out with such a goofy tab spacing here?
This appears on a Linux version of emacs 24.3.1.
Fire up a buffer, enter octave-mode (you may need to install from package), and enter something like this:
function foo = bar(x,y)
Now, if you go to ...
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1
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2k
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Install octave using homebrew
I found a blog on how to do this here https://www.nesono.com/node/356 but when I do
brew install octave
I get
Error: No available formula for octave
I am on Mountain Lion 10.8.5
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2
answers
520
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PAGER('/dev/null'): permission denied
Setting PAGER to /dev/null as suggested through the net to prevent every command being printed in stdout issues an error under OS X 10.6:
octave:1> PAGER('/dev/null');
octave:2> 1
sh: /dev/null:...
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1
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1k
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Exporting plot as vector graphics in Octave or matlab
I know I can export a plot in octave as a PNG but is it possible to export a plot as a vector graphic image?
The reason I ask is that some of the points on my plot are very close together and I would ...
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1
answer
642
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Switching between readline editing-modes in GNU octave
When punching away at the keyboard on the octave command line, I sometimes find that the various readline shortcuts stop working, e.g. C-a and C-e just insert ^A and ^E.
It took me a while to realize ...
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2
answers
6k
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Octave's sound() function
I apologize if this has been covered before but I am required to study Octave at my university. The way they're going through the exercises, they already assume that sound() works with Octave out of ...
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0
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632
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Octave Install Error on Mac OSX 10.7.5 (using homebrew)
I am trying to install octave on my mac air
I have updated my homebrew, as is my XCode and its command line tools.
Here is the error I am getting:
==> Using Homebrew-provided fortran compiler.
...
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0
answers
1k
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How to input 64-bit hex values in octave
I'm trying to use Octave as a programmer's calculator. I want to input a 64-bit pointer, but when I do apparently the 64-bit value gets silently truncated to 32-bit:
octave:44> base_ptr=...
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3
answers
252
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Software to draw graphics with millions of "measurements" [closed]
In my trading software I generate a file like the following:
10:00:00.0000001 1.25333
...........................
...........................
14:58:48.5024961 1.23456
14:58:48.5024987 1....
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1
answer
510
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In what (small) ways can I modify Octave's compile options to enhance it without breaking it?
If the title to this question seems a bit vague, I am sorry. But I wasn't sure how to distill what I am attempting to do into a single sentence.
A few weeks back I learned that I could build and ...
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2
answers
2k
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Can I install Octave under Windows 7 without admin rights?
Can I install Octave under Windows 7 without admin rights? There are similar questions on Linux, but this is about Windows 7.
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1
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771
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Package dependency error message when install octave on RedHat linux
Hi I tried to install octave on my RedHat 5 Linux. I typed command as
yum install octave
Then, it complained as following :
gcc-gfortran-4.1.2-44.el5.x86_64 from installed has depsolving problems
...
3
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2
answers
4k
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Software GNUPlot not launching from GNU Octave
I'm trying to launch GNUPlot from Octave, but when I do I get the following error:
octave-3.4.0:3> plot(x,y)
dyld: Library not loaded: /usr/X11/lib/libfreetype.6.dylib
Referenced from: /usr/X11/...
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2
answers
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How do I run a Linux shell command from Octave?
I want to run commands like pdflatex and cp from an octave script. Is there a way to do that?
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1
answer
318
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Conditional variables depending on whether Matlab or Octave is running the code
I have written some code for Matlab/Octave. Basically, they have the same syntax and everything, but, for example, they have different functions for optimization (linprog/glpk,quadprog/qp).
I want ...
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0
answers
2k
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Installing Octave on Red Hat
I am trying to reinstall Octave on Red Hat. I currently have Octave 2.4 installed on the computer, but it is too old and some of my scripts are not running.
On the Octave wiki it says:
Octave is ...
8
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1
answer
632
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Why does the expression exp(i*pi) return the wrong result in GNU Octave?
I started to learn GNU Octave today, and tried the first expression given in the manual
exp(i*pi)
The result is
ans = -1.0000e+000 + 1.2246e-016i
And it seems GNU Scientific Library gives similar ...
1
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1
answer
8k
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Completely remove/ uninstall Octave from my mac machine
Does anyone have any idea how I can completely remove/delete/uninstall all trace of Octave from my mac machine? Preferably via Terminal in a very swift action?
Thanks,
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3
answers
4k
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3D plotting in Ubuntu
I have Ubuntu 10.10 installed and need to plot 3D graphic.
I have installed several free applications available in the repository, like QtiPlot and GNU Octave. I have found out and created the ...
4
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2
answers
9k
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Displaying a sequence of images in Linux
I'm generating a sequence of images saved as .PNG files on disk, labelled say plot001.png, plot002.png, plot003.png. These are actually saved plots from Octave, a scientific data manipulation/...
1
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1
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198
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Octave: refer to output like %10 in Mathematica?
I want to reuse values. Is there a similar functionality as %10 of Mathematica in Octave?
octave:18> 3/log (2)
ans = 4.32808512266689
octave:19> % //how to output 4.328....
octave:19>...
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1
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Octave: Precise value in Decimal or Continuous Fraction for 729 / 4^3 [closed]
I get the approximation:
>> 729 / 4^3
11.391
Is there some function to get more precise approximation?
3
votes
3
answers
3k
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How to do binary decimal calculations with bin2dec
What is the Octave NaN for? Is dot wrong delimiter?
>> bin2dec ('10.1')
ans = NaN