Unable to resolve the name matlab.int​ernal.addo​ns.showAdd​on in Matlab 2020b

I am trying to install the webcam pkg. via the command

matlab.internal.addons.showAddon('USBWEBCAM');  

but I get the message Unable to resolve the name matlab.internal.addons.showAddon. I have tried regenerating the preferences file, but get the same message. Is there something else I can try? This is Matlab 2020b.

Answer 1

[Walter Roberson]

matlab.internal.addons.showAddon is a little-documented function, with no doc page.

It was added in R2024a.

[Allen Takahashi]

In 2020b I also have an Add-ons tab under Environment that I have tried. If I click on Get hardware support packages I get the following errors:

Dot indexing is not supported for variables of this type.

Error in matlab.internal.addons.AddOnsWindow/bringToFront (line 68)

obj.webwindow.bringToFront();

Error in matlab.internal.addons.Explorer/show (line 52)

obj.addOnsWindowInstance.bringToFront();

Error in matlab.internal.addons.launchers.showExplorer (line 128)

matlab.internal.addons.Explorer.getInstance.show(navigationData);

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Based on the fact that I have this option in the toolbar I am suspecting that either a link or a file is missing. Thoughts?