How to get missing functions in Matlab 2018b about table and timetable operations?

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Luna 2020-2-10

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https://ww2.mathworks.cn/matlabcentral/answers/504623-how-to-get-missing-functions-in-matlab-2018b-about-table-and-timetable-operations

回答： Walter Roberson 2020-2-19

Hello dear community!

I have just realized that the functions below listed do not exist in my Matlab 2018b version with all toolboxes installed. Those functions are supposed be introduced in 2018a in the documentation.

addvars
splitvars
mergevars
movevars
removevars

How can I use those functions? Do you have any ideas? Is my Matlab installed wrongly?

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Walter Roberson 2020-2-10

addvars is a method not a general function. It is only defined for a few classes. MATLAB does not search all methods of all classes: at most it only includes methods of classes that have been parsed during the current session (and have not been cleared)

Luna 2020-2-11

Now I got it :) Thank you!

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Walter Roberson 2020-2-19

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https://ww2.mathworks.cn/matlabcentral/answers/504623-how-to-get-missing-functions-in-matlab-2018b-about-table-and-timetable-operations#answer_416401

The needed functions are present in r2018a, but were not showing up in the pop-up help because the pop-up help can only pop up for classes that MATLAB has parsed in this session.