x.mat does not exist on the MATLAB path

Error occurred in 'untitled/Signal Editor'.

Caused by:

• untitled.mat does not exist on the MATLAB path.

Suggested Actions

To create and edit scenarios, use Signal Editor user interface.

[Image Analyst]

What folder is untitled.m in and what folder is untitled.mat in?

Answer 1

[Saurav]

Hello,

I see that you are getting an error that “untitled.mat” does not exist on the MATLAB path while using the ‘Signal Editor’ block in Simulink.

Here are the possible solutions to resolve the error:

1. Ensure that the “untitled.mat” file exists and is located in the current folder in MATLAB. MATLAB’s current folder is the default location it searches for files if no path is specified. To check if MATLAB can access the file, you can use the which command:

which untitled.mat

If this command returns a file path, MATLAB can find the file; if not, the file is not present in the current directory or on the MATLAB path.

2. If the file “untitled.mat” already exists but is not on the MATLAB path, add the directory to the path. It can be done either using the command window or by using MATLAB’s GUI.

a) Using the MATLAB Command Window:

• Navigate to the folder where “untitled.mat” is located using cd command. For example:

cd 'C:\path\to\your\file'

• Add this folder to the MATLAB path using the addpath command:

addpath('C:\path\to\your\file')

Refer to these links for detailed information:

• https://www.mathworks.com/help/releases/R2023b/matlab/ref/cd.html
• https://www.mathworks.com/help/releases/R2023b/matlab/ref/addpath.html

b) Using MATLAB’s GUI:

• On MATLAB Toolbar, go to ‘Home’> ‘Set Path’.
• Click on ‘Add with Subfolders…’ or ‘Add folder’, depending on whether you want to include subfolders or not.
• Navigate to and select the folder where “untitled.mat” is located.
• Click ‘Save’ and then ‘Close’.

3. (Suggested Action) Double-click on the Signal Editor block to open the block parameters where you can create and edit scenarios using the ‘Launch Signal Editor’ tab if the file is not already created.

Refer to the following link to learn more about Signal Editor Simulink block:

• https://www.mathworks.com/help/releases/R2023b/simulink/slref/signaleditorblock.html

I hope this helps!