How to find installation folder for matlab add-ons via command line?

Question

Kevin Phung 2019-5-3

3
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/460153-how-to-find-installation-folder-for-matlab-add-ons-via-command-line

评论： Vinayaka Pattanashetti 2022-3-14

Hi, I have a gui (made through a class method, in a class folder) that on start up checks whether or not the user has a specific toolbox installed.

I do this by:

matlab.addons.installedAddons

if a particular toolbox is not installed, it will install via a .mltbx within the class folder.

If the toolbox IS installed but is not up to date, it will install via the new .mltbx file.

it uninstalls and updates successfully, however, I am running into the issue of where the user will have to manually delete the old folder-- so I am trying to automate this.

My plan is to change the matlab directory to the path containing the old and new toolbox folder.

from here: https://www.mathworks.com/help/matlab/matlab_env/manage-your-add-ons.html I know that there is a default installation folder for addons, but this can also be customized in Home > Environment tab > preferences > Add ons.

Is there a way for me to navigate to wheverever this installation folder is? And so then I can just use:

rmdir

to remove the old one so that there wont be any naming issues.

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Answer 1

Robert 2021-1-15

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https://ww2.mathworks.cn/matlabcentral/answers/460153-how-to-find-installation-folder-for-matlab-add-ons-via-command-line#answer_598560

在 MATLAB Online 中打开

It's a bit late, but anyone trying to do the same, try this:

mngr        = com.mathworks.addons_toolbox.ToolboxManagerForAddOns();
installed   = cell(mngr.getInstalled());
myTb        = installed{find(cellfun(@(tb) strcmp(tb.getName(), 'MyToolboxName'), installed), 1)};
identifier  = char(myTb.getInstallationIdentifier());
theFolder   = extractBefore(identifier, '|');

Note that as of R2020b, the com.mathworks package is listed as will be removed in a future release. I'd be happy to learn about alternatives to this that do not use com.mathworks.

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svanimisetti 2021-3-8

编辑：svanimisetti 2021-3-8

在 MATLAB Online 中打开

A more compact form can be obtained using arrayfun and getInstalledFolder function, eliminating the need to convert to a cell array and working with identifier.

tbxlist = com.mathworks.addons_toolbox.ToolboxManagerForAddOns().getInstalled();
idx = arrayfun(@(x)startsWith(x.getName(),'MyToolboxName'),tbxlist);
path = tbxlist(idx).getInstalledFolder();

Vinayaka Pattanashetti 2022-3-14

MATLAB Add On folder not found in my windows laptop. But i see many add-ons installed. Plz help me, i need to copy some plugins out of this add-on folder into some other folder.

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