How to Find What Toolbox a Function is in From Documentation?

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Tom Ruopp
Tom Ruopp 2022-6-1
评论： Walter Roberson 2022-6-1
Hi,
I hope the answer to this isn't staring me in the face...but I'm trying to use the 'addTerms' function
https://www.mathworks.com/help/stats/linearmodel.addterms.html
and I cannot figure out from the documentation what toolbox I need to download in order to use it.
I already have the 'Statistics and Machine Learning Toolbox' version 12.3. However, my MATLAB install is not recognizing the 'addTerms.m' function.
Thanks for your consideration,
tom

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Matt J
Matt J 2022-6-1
See the upper-left corner of the doc page. In this case, it is the Statistics and Machine Learning Toolbox.
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Steven Lord
Steven Lord 2022-6-1
Walter is correct. You can see this by scrolling down to the Input Arguments section on that documentation page, which lists as the description of the mdl input argument:
"Linear regression model, specified as a LinearModel object created using fitlm or stepwiselm."
If you tried to call addTerms with something that's not a LinearModel object as the first input, that doesn't satisfy the requirements of the function and so MATLAB throws an error.
Walter Roberson
Walter Roberson 2022-6-1
Because it is a class method, MATLAB would not be able to see it at all for other inputs.

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