MathWorks Support Team

MathWorks

Last seen: 17 days ago | Active since 2009

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Answered
How can I improve the live streaming performance of Simulation Data Inspector (SDI) or Dashboard blocks when using Simulink Real-Time and Speedgoat?
Here are some recommended steps to improve live streaming performance with Simulink Real-Time (SLRT) and Speedgoat hardware: 1....

22 hours ago | 1

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Answered
Why can't I renew or purchase Add-Ons for my Perpetual Home or Student Version License?
As of January 1, 2026, Perpetual Student and Home offerings have been sunset and replaced with new Annual Subscription Student a...

22 hours ago | 0

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Answered
How do I install MATLAB R2008a to R2017a?
Installing MATLAB R2008a to R2017a is supported using offline workflows only. This article summarizes the recommended process fo...

22 hours ago | 0

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Answered
File Logging Basics: How can I perform intermittent data logging on Speedgoat to generate multiple log files and SDI runs?
For MATLAB R2022b and later: Starting in R2022b, you can create multiple log files on your target machine using either:The ...

22 hours ago | 0

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Answered
How can I debug an issue with the Polyspace Report Generator?
You can use the Polyspace Report Generator log‑collection utility (provided as a Perl script in the attachment) to automaticall...

22 hours ago | 0

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Question

How can I debug an issue with the Polyspace Report Generator?
When experiencing an issue with the Polyspace Report Generator, how do I generate logs or reports that I can send to MathWorks S...

22 hours ago | 1 answer | 0

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How can I link a requirement in the Requirements Editor to another requirement?
This is possible as well. In Link_Requirement_with_Requirement.gif, it is demonstrated how. The model from this example was used...

22 hours ago | 0

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Question

How can I link a requirement in the Requirements Editor to another requirement?
I would like to know if there is any possibility of creating traces between 2 requirements in the requirements editor.

22 hours ago | 2 answers | 0

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How can I prevent variant‑disabled ports from appearing as "UNUSED_PARAMETER" arguments in generated code when using an explicit Step function prototype configuration?
This behavior occurs because the function interface has been explicitly defined in the Code Generation interface. When the optio...

2 days ago | 0

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Question

How can I prevent variant‑disabled ports from appearing as "UNUSED_PARAMETER" arguments in generated code when using an explicit Step function prototype configuration?
When generating embedded code from a Simulink model in Embedded Coder R2022b that uses "Variant Source" and "Variant Sink" block...

2 days ago | 1 answer | 0

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Update-PROD-Restart
Fake text 1234&^%^&*()

2 days ago | 0

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Question

Update-PROD-Restart
Generated question?

2 days ago | 1 answer | 0

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How can I recover the password for my MathWorks Account?
If you are unable to retrieve your password or if your MathWorks Account has been locked, you can reset the password by using th...

2 days ago | 0

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Answered
MATLAB Coder generated MEX file throws an error that "Index exceeds matrix dimensions" although the code runs in MATLAB without error
This is fundamental difference between MATLAB execution and code generation. Code generation does not support increasing th...

2 days ago | 1

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Question

MATLAB Coder generated MEX file throws an error that "Index exceeds matrix dimensions" although the code runs in MATLAB without error
I'm trying to use MATLAB Coder to generate C/C++ code for my MATLAB code. However, when I try to execute the MEX file generated ...

2 days ago | 1 answer | 0

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R2025a 以降の MATLAB で Java を有効にするにはどうすればよいですか?
MATLAB は R2025a 以降、従来の Java ベースのグラフィカルユーザーインターフェースを廃止し、JavaScript および HTML を用いた仕組みに移行しました。そのため、起動時に Java は自動的には読み込まれなくなっています。イン...

3 days ago | 0

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Answered
Why do I receive a "Previously accessible file <filename> is now inaccessible." error in MATLAB R2024b?
This issue occurs in MATLAB R2024b when too many file objects are open at the same time in your code. MATLAB has a limit on the ...

3 days ago | 0

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Question

Why do I receive a "Previously accessible file <filename> is now inaccessible." error in MATLAB R2024b?
I am using MATLAB R2024b on Windows 11, and my workflow involves opening and closing multiple file objects in my code. However, ...

3 days ago | 1 answer | 0

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Can I access internal flash memory using Embedded Coder?
We do not support any block that directly allows users to write/read to/from the internal flash memory. To do this, you must use...

3 days ago | 0

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Question

Can I access internal flash memory using Embedded Coder?
I am working on a project where I use Embedded Coder to deploy to a microcontroller.  I would like to store data in the mic...

3 days ago | 1 answer | 0

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Can lingering testhost.exe processes be prevented after C# unit tests using a MATLAB .NET library?
The persistence of the "testhost.exe" process after test completion likely indicates that the MATLAB Runtime environment, which ...

3 days ago | 0

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How can I enable Java in MATLAB R2025a and newer?
Since MATLAB's own graphical user interface is no longer Java-based starting in R2025a, but instead utilizes JavaScript and HTML...

4 days ago | 1

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Why will MATLAB not start up properly on my Windows based system?
If MATLAB is not launching properly, and you are not receiving any License Manager Errors, then you may be experiencing one of t...

4 days ago | 206

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How can I install the "Simulink Real-Time Target Support Package" and "Speedgoat I/O Blockset" in a Docker container?
To build a custom MATLAB Docker container, we typically recommend using the MATLAB Package Manager (mpm). However, installi...

4 days ago | 2

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Answered
Are there workaround to avoid "Cannot compute a stabilizing LQR gain" error?
The error message does not indicate a theoretical inconsistency; it is caused by numerical instability. When parameters such as ...

4 days ago | 0

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Question

Are there workaround to avoid "Cannot compute a stabilizing LQR gain" error?
I came across an error when I executed LQR command. A = 5000; B = 1e-6; Q = 1e+4; R = 1; [F,P,~] = lqr(A,B,Q,R); Error using...

4 days ago | 1 answer | 0

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Answered
MATLAB Drive アカウントのサインイン履歴を見るにはどうすればよいですか?
MathWorks では、MATLAB Drive に関するデバイス履歴や最終同期日時について、個々のユーザー単位でのレポート提供は行っておりません。 MATLAB Driveのサインイン履歴についてご不明な点がございましたら、MathWorks サポート...

5 days ago | 0

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Question

MATLAB Drive アカウントのサインイン履歴を見るにはどうすればよいですか?
MATLAB Drive アカウントのサインイン履歴を確認し、いつ、どこからアクセスされたかを確認したいと考えています。この情報はどのように確認できますか？

5 days ago | 1 answer | 0

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Answered
なぜ永久版の MATLAB Student / Home License の更新やアドオン製品の購入はできないのですか?
2026年1月1日より、従来提供していた永久版の Student License および Home License は廃止され、年間サブスクリプション型の MATLAB and Simulink Student Suite および MATLAB and ...

5 days ago | 0

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Answered
How do I restore Speedgoat I/O Blockset after resetting my MATLAB path?
You can restore the Speedgoat I/O Blockset installation by doing the following: 1) Navigate to the Speedgoat Blockset installati...

6 days ago | 0

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