I have a problem with loading images and editing scripts in Octave. I think Octave has the wrong path or something. When I say 'edit', it says:
sh: 1: emacs: not found
What does that mean?
I'm pretty new to both Octave and MATLAB, but when I'm at school using MATLAB, for example, writing the command 'edit' works...
How do I know where to put files I want to load in Octave, and how do I change the path?
The problem is not with your path, the problem is that you didn't set up EDITOR (see help EDITOR and the editor option at help edit). As you have no environmental variable for it, it defaults to emacs so when you run edit, it tries to open the file in emacs and fails because you don't have it installed. Set up EDITOR for your text editor of choice at .octaverc file (If I remember correctly, the text editor to use is set as a persistent variable inside edit.m so you'll have to restart octave) or an environmental variable (I'd recommend this one).
It works in matlab because they made their own text editor. Octave is not a text editor, it's a programming language, it would be a waste of time to reinvent the wheel, and you should be able to choose whatever you are comfortable to code with.
Related
I'm new to octave, and want to run a few commands on startup automatically every time it opens.
I typed "help startup" and saw "Octave uses the file ".octaverc". I did a bit of searching online at https://www.math.utah.edu/docs/info/octave_4.html, and saw the .octaverc file should be in the following path:
OCTAVE_HOME/lib/octave/VERSION/startup/octaverc
PROBLEM:
In that directory I don't have a startup folder, only "oct" and "site". I do see hidden files, which was my first thought since the file begins with "." character. So I then used Agent Ransack in the directory, and still nothing came up.
QUESTION:
1) Do I have to make the startup folder and octaverc file myself?
2) If so, does one, both or none have to be hidden?
3) Can it be a txt file, or does it have a special extension?
4) Do I just type the commands straight into the file or is there special formatting?
NOTE:
In case I'm going about this the wrong way, there are the operations I'd like to have run on startup:
PS1('>> '), addpath('D:\Users\Me\Desktop'), clc
Thanks ahead of time for the help!!
Possible locations (and their differences) for octaverc files are specified in the documentation.
In short, these are, from more general to specific:
octave-home/share/octave/site/m/startup/octaverc (most generic, for entire system)
octave-home/share/octave/version/m/startup/octaverc (to cover for more than one octave versions installed on the system, possibly requiring different startup scripts)
~/.octaverc (where ~ is unix-speak for a user's home directory -- covering for user-specific startup files)
.octaverc files in any directory, creating specific startup conditions for specific directories
octaverc files are effectively simple script files that are executed from most generic to most specific each time octave starts. Therefore, in the presence of conflicting commands, the more specific file can effectively be used to override the more generic behaviour.
Octave also supports (but does not recommend) the use of the startup.m file, for matlab compatibility.
You might also want to check out pathdef and savepath as well.
As a more general tip, if you ever want to search for a specific keyword from the documentation (e.g. octaverc), you can type this kind of search query in duckduckgo (or google):
octaverc site:https://octave.org/doc/interpreter/
(or just download the documentation as pdf and search the pdf)
Found the solution, the file was in the following path:
OCTAVE_HOME/share/octave/site/m/startup
to find out where OCTAVE_HOME is for you, just type "OCTAVE_HOME" into your Octave command line window.
ANSWERS:
1) You do not have to make a startup octaverc file yourself
2) The file is actually not hidden, so it should be easy to find given you're looking in the right place.
3) The file doesn't have an extension. It's just octaverc.
4) Under the last line of the existing file, you can just append commands as you would type them at the Octave command line window.
the last(7.3.0) octave version placed HERE:/ does not find the THERE:/openEMS/matlab directory even it is already loaded with octaverc or addpath. It keeps looking into the work dir where openEMS is not placed and does not recognize, for instance, the 'physical_constants.m' file.
I am taking a class on using Octave for machine learning algorithms, and as part of the assignments, they provide a series of .m files to build upon with our own code as well as to run for submission credit through the auto-grader. My problem is that the .m files load perfectly fine in a regular text editor program like Atom or Notepad, but in Octave, the files are best described as nonsense, and thus will not run in the console. If I open the files in a regular editor and copy/paste over the crazy into Octave, it seems to save it and reopen fine. But, I have close to 20 files for the first project alone, and this solution is untenable in the long run. I have a screenshot of how it's loading. Is there some setting I need to change? Uninstall/reinstall Octave? I'm new to Octave and the Octave GUI, and I'm striking out with Google for a solution. I am using version 6.2.0. Thank you for any help/advice!
screenshot of how octave is loading my .m files
Update: I responded to this in a comment below, but I tried loading it another way into Octave GUI and received the following error: ">> error: load: unable to determine file format of 'C:/Users/sophi/documents/octave/assignment_1/computeCost.m" This tracks for me because it makes sense why it would open the files in such a weird way. It's simply not sure what they are. However, I created my own simple functions from scratch to test, saved them as .m files, and was able to run them perfectly fine. I'm including one of the files below. Maybe there's a key in the formatting of the files offered by the class which is impacting Octave's ability to process it correctly?
function plotData(x, y)
%PLOTDATA Plots the data points x and y into a new figure
% PLOTDATA(x,y) plots the data points and gives the figure axes labels of
% population and profit.
figure; % open a new figure window
% ====================== YOUR CODE HERE ======================
% Instructions: .... goes on about assignment
% ============================================================
end
MOST RECENT UPDATE: The plot thickens. Yesterday, I was able to open the files I created and run them in the Octave environment, and I (wrongly) assumed they would still work today. They are doing the same stupid thing as the files included by the course. I checked inside preferences for the editor, and it says it is loading and saving them as IBM273 if that helps. Thank you for everyone has pitched in ideas. I really appreciate it!
It was 100% the encoding. I thought it was strange it was saving/loading in IBM273, so I switched it to UTF-8. Almost all the files are working now. The only ones that aren't are the ones I was trying to copy/paste yesterday to see what was going on with the load problems and the basic new problems I wrote. So I deleted everything, redownloaded, and set the default UTF-8 going forward and voila! Solved! Thanks again!
If you want to open a .m file in octave, Try this solution
It is necessary to declare a current directory before saving a file, loading a file, or running an M-file. By default, unless you edit the Octave shortcut, the current directory will be .../Octave/work. After you start Octave, change the current directory by either using the toolbar at the left-hand side of the screen, or entering the path in the bar at the top.
To open an .m file, you can use file -> open, or type
open filename
when scripting for after effects I often use ExtendScript.
There is an extendscript package available for sublime text out there.
https://sublime.wbond.net/packages/ExtendScript
(this makes it possible to run your script directly from sublime text into after effects)
I was wondering if there is also something like this out there for any JetBrains IDEs (like WebStorm or PhpStorm etc.). I do know it has several plugins in it, but i don't know if there was ever one made for Expendscript like the one for sublime text.
I'm not aware of any... Please see http://devnet.jetbrains.com/message/5496889#5496889 for some hints
To be able to run adobe scripts from WebStorm, you can use external tools (Settings/External tools):
create a new external tool
specify a full path to Adobe tool capable of executing .jsx ("C:\Program Files (x86)\Adobe\Adobe Photoshop CS5\Photoshop.exe", for example) as a 'Program'
add $FileName$ as parameters
set a working directory to $FileDir$
make sure to check Show in/Project views and Editor menu to be able to run your tool from file right-click menu in Project view/Editor
then you'll be able to run your tool from a right-click menu of your .jsx file - the file will be passed to Photoshop as an argument
I have a program that uses a file called user.cfg to get its user defined configuration settings. The odd thing is that they chose the syntax for this file to be Tcl (it's not odd that it is Tcl, it's odd they chose the .cfg extension instead of .tcl). So, when I open this file in Sublime Text, it doesn't know what syntax highlighting scheme to choose.
What I would like to do is set the syntax highlighting for user.cfg to Tcl, but not all .cfg files to Tcl.
I have seen this question which is very similar to mine, except in that case the special file name had no extension so Sublime Text knew to assign Ruby highlighting to only that one file. Unfortunately, I have an extension so the solution given there will not work for me.
Is there any known way to get Sublime Text base a highlighting scheme on the full filename?
Take a look at the ApplySyntax plugin.
The previous answer is completely true; however, I thought it would be better to have it here all in one place rather than going on another webpage to find the list of procedure to apply it
Sublime text 3
This is found here
Ensure Package Control is installed. Instructions are found here.
In Sublime Text, press Ctrl＋Shift＋P (Win, Linux) or Cmd＋Shift＋P (macOS) to bring up the quick panel and start typing Package Control: Install Package.
Select the command and it will show a list of installable plugins.
Start typing ApplySyntax; when you see it, select it.
Restart to be sure everything is loaded proper.
Enjoy!
For example,
!vim
in iPython opens vim. Is there such a thing in Octave?
The following might work system("vim");
If you want the interactivity of calling something inside of Octave and interactivity with it directly try exec("vim") instead.
See Controlling Subprocesses for more examples.
Otherwise you can either combine calls to system, fork and exec or extend octave with Python/iPython or C++.
If you only want to run another process then , the already suggested system() or exec() should work.
However, if you plan on using this to simply open up a text editor and edit an Octave file, set the value of EDITOR with EDITOR ("vim") (you can add this to your .octaverc file) and then use edit (foo) to open up the foo function on the text editor.