MATLAB Code Analyzer Report

Open the Code Analyzer Report

The Code Analyzer Report displays potential errors and problems, as well as opportunities for improvement in your code through messages. Interactively browse the report using the Code Analyzer app, which can be opened in the following ways.

MATLAB^® Toolstrip: On the Apps tab, under MATLAB, click the app icon: .
MATLAB command prompt: Enter codeAnalyzer.

Run the Code Analyzer Report

Use the Code Analyzer app to analyze the code in a specified file or folder.

Run the Code Analyzer on the desired file or folder.
```
codeAnalyzer("C:\MyCode") 
```
This command launches the Code Analyzer app and generates a report of the issues found within the specified code. The summary section at the top of the report provides an overview of the information contained in the report. This section shows how many files were analyzed and the total number of errors, warnings, and informational messages found in the analyzed code.
Issues are grouped by severity by default. You can change how issues are grouped by using the Group By list. Group the report by file.
You can filter the displayed messages by using the Filter by Severity and Filter by Issue Type lists. Filter the report to show only errors.
Some issues have can be solved with automated replacement. These issues have Fix All button. If you expand the issue by clicking on it individual instances of the issues can be fixed clicking the corresponding Fix button. Hover the cursor over the Fix or Fix All buttons to see what fix MATLAB would implement.

Change Code Based on Code Analyzer Messages

For information on how to correct the potential problems presented in Code Analyzer messages, use the following resources:

Open the file in the Editor and click the Details button in the tooltip, as shown in the image following this list. An extended message opens. However, not all messages have extended messages.
Use the Help browser Search pane to find documentation about terms presented in the messages.

The following image shows a tooltip with a Details button. The orange line under the equals (=) sign indicates a tooltip displays if you hover over the equals sign. The orange highlighting indicates that an automatic fix is available.

In R2023a: Issues that have an automatic fix available can be fixed programmatically using the fix function on a codeIssues object. These issues can also be fixed interactively using the Code Analyzer app.

Other Ways to Access Code Analyzer Messages

You can get Code Analyzer messages using any of the following methods. Each provides the same messages, but in a different format:

Access the Code Analyzer Report for a file from the Profiler detail report.
Run the checkcode function, which analyzes the specified file and displays messages in the Command Window.
Run the mlintrpt function, which runs checkcode and displays the messages in the Web Browser.
Use automatic code checking while you work on a file in the Editor. For more information, see Check Code for Errors and Warnings Using the Code Analyzer.

Configure Code Analyzer Messages

Since R2023a

You can configure existing checks displayed by the code analyzer and add custom checks by placing a file named codeAnalyzerConfiguration.json inside a resources folder. This file configures the code analyzer checks performed for the resources folder's parent folder and it's subfolders.

For more information, see Configure Code Analyzer.