Can I update a toolbox without updating Matlab?

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Felipe Alcalde
Felipe Alcalde am 19 Jan. 2020
Bearbeitet: John D'Errico am 20 Mai 2020
I have Matlab 2018R2 with some toolboxes but my update service has expired. I am wondering if its possible to buy an update for a specific toolbox without buying the update for Matlab (install the latest toolbox and keep using Matlab 2018R2). Will it be compatible?

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John D'Errico
John D'Errico am 19 Jan. 2020
Bearbeitet: John D'Errico am 20 Mai 2020
Short answer: No.
Long answer: Nnnnnooooooooo.
Why not? You can't do it, because then the versions would not be consistent. Just as you cannot use a toolbox from 2009 in a current or different release, you cannot use a newer toolbox with an old release of MATLAB.
There are good reasons why this cannot be done. Remember that MATLAB is an evolving language, although it evolves very slowly, and they attempt as strongly as possible to make everything compatible with what worked in the past. Occasionally however, utilities in MATLAB disappear. As users, we get long warning times, that some specific tool will disappear in the future.
But a toolbox is written to employ the existing capabilities of MATLAB. However, a toolbox author could not be asked to also provide versions that would work with any older MATLAB release too. That would effectively force any toolbox to only work for the oldest possible MATLAB release. Or, it would force a toolbox author to write different versions of the toolbox for every possible older release. It would also force the author to exhaustively test those toolboxes against every old release. I shudder to consider the additional numbers of employees that would be needed, and the additional man-years of work they might need to make toolboxes compatible with older releases.
In terms of the work necessary, insisting on the ability to use some current toolbox in an old release is realistically impossible. But it also damages the general business model the MathWorks itself must employ to remain in business. In order for their business to continue, for them to be able to pay the employees they have and to continue as a business into the future, they need to have a revenue stream. Part of that revenue stream will come from people updating their old releases. Otherwise, once everyone has MATLAB, then nobody else needs to buy it. And that would force them to charge far more for you to buy the product the first time. They would certainly be forced to charge more to buy any individual toolbox.
There are people out there who use surprisingly old releases of MATLAB. I am sure some could argue that a toolbox should be accessible to say the last 3 releases, or n releases, picking whatever value for n as you wish. Of course, if you personally live with an old release, then n would be a large number. But as soon as they would be forced to provide that capability for any older release at all, it would also effectively forces them to significantly increase the level of testing done and the number of people they would need to employ to write the codes. It would seriously increase the time required to create any new toolbox.
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Felipe Alcalde
Felipe Alcalde am 19 Jan. 2020
Ok thank you. I’ll keep my current versions for now.
Carl Cygan
Carl Cygan am 20 Mai 2020
Bearbeitet: Carl Cygan am 20 Mai 2020
I just figured this out. I guess it would be very prudent to determine which MATLAB toolboxes you intend to use in the future and purchase all of them before your version of MATLAB expires (usually 1 year from purchase date). Updating to the current version of MATLAB is $75 and updating each toolbox to the current version of MATLAB costs $23.

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