Matlab online problems - doesn't use startup.m, ignores setpath, forgets preferences

online has mutliple problems. I'll be glad if anyone has solutions

doesn't run startup.m from intial location

unlike desktop, preferences > general does not have a option to set startup folder

using setpath or pathtool is ignored. it has old bad paths(mine) and forgets new paths added

forgets prefs changes after quit

[Cris LaPierre]

For paths, after making changes in pathtool, are you clicking 'Save for Future Sessions'? If you are adding folders in the Current Folder Browser through the right-click menu, run savepath in the command window to save the changes for future sessions.

[WTxnitz]

yes-save path for future - upper right corner

holds for current session

logout/in - back to old; no new path, bad old paths

must have a cache somewhere that needs flushing

[Les Beckham]

The command to save the search path is savepath (all one word). save path (two words) will save your workspace variables to a file called path.mat.

[WTxnitz]

I should have been clearer: I meant - hit the button in the upper right corner, with the tooltip "save path for future"

which is what I hit after making edits.

deleting old bad paths

adding new paths

changing order

hit the button in the upper right corner, with the tooltip "save path for future"

I assume the callback includes savepath.

it's the new (correct) version

Immediately check - new version

check later in same session - new version

logout/in - back to old version; no new path, bad old paths; edits gone

desktop versions, neither Mac nor PC, do not do this. They operate as expected.

It is a problem with matlab online. Whether accessed by Mac or PC - same issue

Answer 1

[Sanchari]

Hello WTxnitz,

I understand that you want to utilize the "startup.m" file in MATLAB Online and save changes to the "setpath" and "preferences" for future sessions in MATLAB Online.

To achieve this, you can follow these steps:

1. Verify MATLAB version: Check the version of MATLAB Online by typing "ver" in the command window. Ensure that you are using the latest version as the "setpath" and "preferences" options are fully functional in this version.
2. Unlike the desktop version, MATLAB Online does not provide an option to set the initial working folder. Create a startup folder with the startup file within it. Then, click on "Set Path" in the Environment section and select the path to the startup folder.
3. Finally, click on the "Save Path for future sessions" button located in the top-right corner of the window.

By setting and saving the startup folder for future sessions, you should be able to run the "startup.m" file from the command window. Ensure that your current working directory is the one containing the "startup.m" file. You can also right-click on the current folder and select "Add to path > Selected folders and subfolders".

For more information on setting the startup folder locally, you can refer to the MathWorks documentation: https://www.mathworks.com/help/matlab/matlab_env/matlab-startup-folder.html

Additionally, you can find helpful information on MATLAB Answers:

1. “Problem with Startup.m” https://www.mathworks.com/support/search.html/answers/13083-startup-m-problem.html?fq%5B%5D=asset_type_name:answer&fq%5B%5D=category:matlab/startup-and-shutdown&page=1

2. “Startup.m not found” https://www.mathworks.com/support/search.html/answers/454005-startup-m-not-found-in-local-folder.html?fq%5B%5D=asset_type_name:answer&fq%5B%5D=category:matlab/startup-and-shutdown&page=1

3. “Setup Search Path in MATLAB Online”

https://www.mathworks.com/support/search.html/answers/474629-how-to-setup-search-path-in-matlab-online-environment.html?fq%5B%5D=asset_type_name:answer&fq%5B%5D=category:matlab/matlab-version-and-license&page=1

I hope this information is helpful to you!

[WTxnitz]

whatever. I'm done with online