Question

Why is "undistortPoints" slower than "undistortImage" using the Computer Vision Toolbox in MATLAB?
I am developing a computer vision application in MATLAB where I need to undistort a very large set of detected points (hundreds ...

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How to handle the error "The 'A' class definition uses an instance of itself directly or indirectly as the default value for the 'b' property. This is not allowed."?
Cause of the error: This error is due to recursive property definition. It occurs occurs when a MATLAB class sets a property’s d...

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Question

How to handle the error "The 'A' class definition uses an instance of itself directly or indirectly as the default value for the 'b' property. This is not allowed."?
I got an error: The 'A' class definition uses an instance of itself directly or indirectly as the default value for the 'b' pro...

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What is the proper way to clean up internal timers when deleting a MATLAB class object?
When an object contains a running timer, simply setting the object to an empty array (e.g., "h = []") does not automatically sto...

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Question

What is the proper way to clean up internal timers when deleting a MATLAB class object?
When using a custom class (for example, "MyClass") in MATLAB that creates and starts a timer object internally, what is the corr...

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How to view and edit two different files side by side in MATLAB R2025a and later?
As of MATLAB R2025a, the Editor “Split Left/Right” and “Split Up/Down” options are designed to show two views of the same docume...

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How to view and edit two different files side by side in MATLAB R2025a and later?
I am using MATLAB R2025a and want to display two different files side by side in the Editor so that I can edit both simultaneous...

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Why do I receive a connection error when launching MATLAB with Login Named User enabled?
A connection error when launching MATLAB using Login Named User indicates that MATLAB is being prevented from reaching MathWorks...

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Linux または UNIX 上で MATLAB が正常に起動しない場合、どのように解決しますか?
Linux マシンで MATLAB の起動に問題があり、ライセンスマネージャー関連のエラーが発生していない場合、以下の方解決策についてご確認ください。 1: 基本設定の再生成 2: 作業ディレクトリの移動 3: SELinux、AppArmor またはそ...

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How to resolve the error "Supported compiler not detected" when running "mex -setup", although I have Visual Studio installed?
To troubleshoot the issue further, please try the following: 1. Check MATLAB & Visual Studio Compatibility Verify that your...

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Can I remove MATLAB DMR files from the temp directory?
Yes, any DMR files in the temporary directory can be safely deleted while MATLAB is closed. DMR files, or "Data Model Repository...

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How can I set an expiration or override date for my license file?
This is no longer a feature, and has been removed. Customer cannot set this anymore.  License administrators can manually ...

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How do I license my Docker container using a Campus-Wide or Startup Individual license?
Please note this will only work with containers running R2023b or newer. This workflow should work with any of our MATLAB D...

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Why does the Current Limiter block not limit the current in my circuit with a Controlled Current Source?
The Controlled Current Source represents an ideal current source that is powerful enough to maintain the specified current throu...

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Question

Why does the Current Limiter block not limit the current in my circuit with a Controlled Current Source?
I have built up a circuit with a constant voltage source and a controlled current source that represents the load. Here is a sim...

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How can I generate events in a component created with MATLAB Builder for Excel?
The ability to generate events in a component created with MATLAB Builder for Excel is not available. To work around this issue...

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Why is MATLAB unable to find the Microsoft Visual C++ compiler due to missing registry entries?
For Visual Studio 2017, 2015, 2013, and 2012, MATLAB uses Windows registry entries to locate the Visual Studio installation dire...

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Why is MATLAB unable to find the Microsoft Visual C++ 2017 compiler after installing Microsoft Visual Studio 2017?
This issue is likely caused by having installed Microsoft Visual Studio 2017 without the required "Desktop development with C++"...

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Why is MATLAB unable to find the Microsoft Visual C++ 2015 compiler after installing Microsoft Visual Studio 2015?
This is likely caused by having installed Microsoft Visual Studio 2015 using the "Typical" setup option, which will not install ...

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Why is MATLAB unable to find the Microsoft Visual C++ compiler due to missing registry entries?
I installed Microsoft Visual Studio 2017 Professional, however "mex -setup" still does not successfully find the Microsoft Visua...

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How do I install Visual Studio for use with MATLAB/Simulink?
Make sure that you install the correct version of Visual Studio that is compatible with your MATLAB release: Visual Studio Versi...

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Why do “ceil” and “floor” sometimes return unexpected results when used on calculations compared to integer values in MATLAB?
The reason why “ceil((8*0.8+2)/(1-0.8))” produces a different output than either “ceil(42)” or “ceil(42.0000)” is due to the way...

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How do I install Microsoft Visual C++ 2010 and Microsoft Windows SDK 7.1?
Here are the specific steps needed to install both Microsoft Visual C++ 2010 Express and Microsoft Windows SDK 7.1 on Windows 7....

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File Logging Basics: What is the difference between using the Start/Stop Recording API, an Enable File Log block, or Enabled Subsystems to control file logging?
1. Start/Stop Recording API Starting in R2022b, the Start/Stop Recording API enables you to control all instrumentation in your ...

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Why does the interpolation not work correctly when setting capacity factor parametrization of torque converter block to "Ratio of impeller torque to square of speed"?
This is the expected behavior. The block interpolates as intended. The block uses the tablelookup function. When Ratio...

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Question

Why does the interpolation not work correctly when setting capacity factor parametrization of torque converter block to "Ratio of impeller torque to square of speed"?
I am testing the torque converter block and have built a test bench to verify its behavior. I have noticed that when specifying ...

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Why does MATLAB R2024a show “repository path *** is not owned by current user” when verifying a remote repository?
Yes this workflow worked in 21a because safe directory checks didn't exist in Git then. Can they try disabling the safe director...

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なぜMATLAB R2024aでは、リモートリポジトリの検証時に「リポジトリパス***は現在のユーザーの所有物ではない」と表示されるのでしょうか?
MATLAB R2021aで問題が発生しなかったのは、その当時Gitに "safe.directory" チェックが存在しなかったためです。次の対応をお試しください。 safe.directoryチェックを無効化する方法： git config --gl...

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Why does the "blfread" command fail with "Index exceeds the number of array elements" in MATLAB R2022b?
Cause: The error occurs because the .BLF file contains CAN frames with a data length exceeding 8 bytes. According to the CAN pro...

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R2022b で "blfread" コマンドが "Index exceeds the number of array elements（配列要素数を超えるインデックス）" エラーで失敗するのはなぜですか？
原因: このエラーは、.BLF ファイルにデータ長が 8 バイトを超える CAN フレームが含まれているために発生します。CAN プロトコルでは、標準 CAN フレームの最大データ長は 8 バイトです。しかし、該当の .BLF ファイルには 8 バイトを超...

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