octave | GNU Octave Mirror

by gnu-octave C++ Version: release-8-2-0 License: GPL-3.0

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kandi X-RAY | octave Summary

octave is a C++ library. octave has no bugs, it has no vulnerabilities, it has a Strong Copyleft License and it has low support. You can download it from GitHub, GitLab.

GNU Octave is a high-level interpreted language, primarily intended for numerical computations. It provides capabilities for the numerical solution of linear and nonlinear problems, and for performing other numerical experiments. It also provides extensive graphics capabilities for data visualization and manipulation. GNU Octave is normally used through its interactive interface (CLI and GUI), but it can also be used to write non-interactive programs. The GNU Octave language is quite similar to Matlab so that most programs are easily portable. GNU Octave is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. GNU Octave is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with Octave; see the file COPYING. If not, see

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Quality

Security

License

Reuse

Support

octave has a low active ecosystem.

It has 235 star(s) with 38 fork(s). There are 13 watchers for this library.

It had no major release in the last 6 months.

octave has no issues reported. There are no pull requests.

It has a neutral sentiment in the developer community.

The latest version of octave is release-8-2-0

Quality

octave has no bugs reported.

Security

octave has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

License

octave is licensed under the GPL-3.0 License. This license is Strong Copyleft.

Strong Copyleft licenses enforce sharing, and you can use them when creating open source projects.

Reuse

octave releases are not available. You will need to build from source code and install.

Installation instructions are available. Examples and code snippets are not available.

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octave Key Features

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octave Examples and Code Snippets

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Community Discussions

Trending Discussions on octave

Easy way(builtin function) to put Main title in plot in octave

Tone.js app - audio won't start until second click

Parameter boundaries using Eigen's Levenberg-Marquardt

Multiprocessing only utilizing a single core

Converting object to another object

Meaning of gnu in gnu octave?

Octave (GUI): Clear all variables of the work environment in one go

octave nmf_bpas error: vertical dimensions mismatch (8x1 vs 1x400)

Error,when installing a new package in Octave

Solving an ODE using ode45 in Octave

QUESTION

Easy way(builtin function) to put Main title in plot in octave

Asked 2021-Jun-11 at 14:35

I'm using octave for plotting subplots in same plot and want to add general title isn't there any builtin function like sgtitle in matlab as in that this old question there was a solution but not using any cool builtin functions and octave dosen't .also here Octave - Bugs: bug #55019, new sgtitle function I find there is sgtitle in octave but can't find doc or package name or any thing ...is it not fully implemnted yet or some alternative ???

I'm asking about package or bultin function not implementation I'll write or copy from someone

...

ANSWER

Answered 2021-Apr-20 at 08:45

Depends on your definition of "builtin function" vs 'workaround'.

A full-window title is simply a title positioned with respect to an empty 'whole window' axis, as opposed to subtitles which are positioned with respect to subplots which take up only a fraction of the window at specific positions.

Therefore the 'builtin' way to add a title on an empty whole-window axis, is to simply add a title on an empty whole-window axis.

Source https://stackoverflow.com/questions/67171470

QUESTION

Tone.js app - audio won't start until second click

Asked 2021-Jun-04 at 13:05

I'm aware that I need a user action to start Web Audio on mobile. However I have followed the recommendation to resume (in the case of Tone.js call Tone.start()) on user action but it still don't work. Here are the relevant parts of my code:

...

ANSWER

Answered 2021-Jun-04 at 13:05

That Tone code looks correct. I simplified it in a CodePen and it worked on mobile on first click (iOS).

Source https://stackoverflow.com/questions/67830291

QUESTION

Parameter boundaries using Eigen's Levenberg-Marquardt

Asked 2021-Jun-04 at 08:42

I'm using Eigen's Levenberg-Marquardt implementation and wondering how to set some boundaries on the parameters which should be optimized.

As I'm migrating some GNU octave programs to Eigen I expected that there might be some boundaries which can be easily provided as parameters to the module.

The layout of my implemenation is nearly the same as in this example. I'm not providing the df() implemenatation but rather use Eigen::NumericalDiff in order to approximate it.

So how do I enforce some boundaries on the parameters which are supplied to minimize()? I thought about setting the errors(fvec) in the operator() to some high values when leaving my expected ranges, but in some small tests this resulted in strange results.

...

ANSWER

Answered 2021-Jun-04 at 08:42

I found a solution which is at least working for me.

The idea is to increase the error vector once the parameters are leaving their sanity boundaries.

This can be achieved by the following function:

Source https://stackoverflow.com/questions/67734419

QUESTION

Multiprocessing only utilizing a single core

Asked 2021-May-27 at 10:24

I'm trying to create a FBM texture using the module perlin-noise, but it takes a very long time to execute. I've implemented multiprocessing, only to find that the program was still running off a single core. I've tried looking for other people with the same problem, but most threads were 7+ years old and / or involved problems and solutions related to different OSs.

My OS is Windows 8.1, I have a quad-core CPU, and I'm running Python 3.9.2

Here is the program:

...

ANSWER

Answered 2021-May-27 at 10:24

Reason why it only use one Process is simple. You only passed 1-length list in Pool.map.

What Pool(n).map(function, iterable) does is, applying provided funtion to each element of provided iterable(in this case, list) with n number of worker processes.

Since you only have 128 in nums it's only creating one task thus no other processes are ever used.

Proper usage would look like this:

Source https://stackoverflow.com/questions/67719075

QUESTION

Converting object to another object

Asked 2021-May-26 at 06:27

I've got an array of objects of this signature:

...

ANSWER

Answered 2021-May-26 at 06:27

Array.prototype.map() returns an array of elments returned from callback function. In your case it is an array:

Source https://stackoverflow.com/questions/67699406

QUESTION

Meaning of gnu in gnu octave?

Asked 2021-May-23 at 15:10

I have confusion regarding gnu octave, please clear

What is abbreviation of gnu? Google search returns "GNUs not unix" but i can't understand meaning of that, please elaborate

...

ANSWER

Answered 2021-May-23 at 15:10

Octave is part of the GNU project (see also wikipedia's page on the GNU project) which has a collection of many software packages The GNU project has many many projects and they are often named GNU something. For example, GNU Emacs is another very common GNU package.

It is common to drop the GNU part of the name but it's technically correct to include them in most cases. Personally, in less formal contexts or when I need to refer to it many times, I just refer to Octave as Octave, otherwise I use GNU Octave.

Regarding the meaning of "GNU" itself:

"GNU" means "GNU is Not Unix".
"GNU" in "GNU is Not Unix" means "GNU is Not Unix".
"GNU" in "GNU is Not Unix is Not Unix".
"GNU" in "GNU is Not Unix is Not Unix is Not Unix".

This is called a recursive acronym. It is a joke that refers to GNU being similar to UNIX but not being UNIX.

Source https://stackoverflow.com/questions/67659366

QUESTION

Octave (GUI): Clear all variables of the work environment in one go

Asked 2021-May-22 at 12:56

GNU Octave, Version 6.1.0, using the GUI:

Is there a way to clear all variables that are listed in the work environment without restarting Octave and without clicking and clearing every single variable?

This is needed for a cold start when switching to a new task, when you still want to keep opened the already opened files.

...

ANSWER

Answered 2021-May-22 at 12:56

Taken from the helpful comments, here are the ways to choose from:

Type "clear" in the editor.
Edit->Clear Workspace in the menu.
Not recommended of course, but possible: you could also just close the GUI and open it again. Then, you should at best use the setting to re-open tabs from the previous session when you close the GUI and open it again. See Edit -> Preferences -> Editor -> File-Handling -> Restore Editor Tabs from previous session on startup or when editor is shown again after closing

Source https://stackoverflow.com/questions/65551271

QUESTION

octave nmf_bpas error: vertical dimensions mismatch (8x1 vs 1x400)

Asked 2021-May-20 at 17:34

I have a problem with non-negative matrix factorization in octave. I try to estimate synergies from Emg-data, but octave only lets me do this for two or more synergies, but not for one. I was able to reproduce the problem with the following code. nmf_bpas is from the linear-algebra pkg from octave-forge.

...

ANSWER

Answered 2021-May-20 at 17:34

This seems to be a bug in nmf_bpas.

From what I can tell, the bug is on line 373. Change

Source https://stackoverflow.com/questions/67618375

QUESTION

Error,when installing a new package in Octave

Asked 2021-May-18 at 14:09

I tried to install in Octave these packages:

bim
image

But setup is not finished, because this error:

Before starting to install packages, I updated the pkg itself with the command

...

ANSWER

Answered 2021-May-18 at 13:18

I don't use Octave, but based on the instructions on https://octave.sourceforge.io/, you should try

Source https://stackoverflow.com/questions/67586887

QUESTION

Solving an ODE using ode45 in Octave

Asked 2021-May-16 at 12:30

I am trying to solve the following ODE using Octave, and in particular the function ode45.

dx/dt = x(1-x/2), 0<= t <= 10

with the initial condition x(0) = 0.5

But the graphs I get are not what I expect.

I think that the graph with red crosses represents x' vs x and not x vs t.

The code is the following:

...

ANSWER

Answered 2021-May-16 at 12:30

ode45 expects the ODE function to have arguments in the order (time, state), so exactly the other way around. What you effectively did was integrate t-t^2/2, and the resulting function 0.5+t^2/2-t^3/6 is what you got in the plot.

Source https://stackoverflow.com/questions/67556067

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install octave

Octave requires approximately 475 MB of disk storage to unpack and compile from source (significantly more, 3.8 GB, if you compile with debugging symbols). Once installed, Octave requires approximately 75 MB of disk space (again, considerably more, 415 MB, if you don’t build shared libraries or the binaries and libraries include debugging symbols).
[GNU Make](https://www.gnu.org/software/make/)
[GNU G](https://gcc.gnu.org/) or another C11 compiler
[GNU Fortran](https://gcc.gnu.org/fortran/), another Fortran 77 compiler, or [f2c](http://www.netlib.org/f2c/)

Support

The file BUGS (or doc/interpreter/bugs.txi) explains the recommended procedure for reporting bugs on the [bug tracker](https://bugs.octave.org) or contributing patches; online documentation is also available [here](https://www.gnu.org/software/octave/bugs.html).

Find more information at: