How to set working directory for Simscape?

I have a fundamental question while working with one of the Simscale examples. I copied the Gamma Stirling Engine example to a different directory. However, all the hyperlinks for the parameters m files are still connected to the original folder. Is this because there is a working directory for Simscale/Simulink ? If so how do I change it to the current directory where the model is.

Answer 1

[Brahmadev]

Hi @Srinivas Gopal Krishna,

You can copy the .m files to the new folder as well and then modify the text present in the model as well as the callback function for the example to point to the new .m files.

For modifying the callback function, go to Modelling Tab -> Model Settings and update the PreLoadFcn with the new/copied file names. It is recommended to give the copied files a new name so that they are not shadowed by the .m files in the example folder. See schreenshot below:

You can see which file is being used by running the following command in the command window:

which GammaStirlingEngineParams

Similarily, you can update the text in the model by right-clicking on it and clicking "edit text". Further the hyperlink can be edited by clicking on the and using "Ctrl-K" or right-clicking it and chossing Hyperlink. Change the command to point to the .m files in the new folder. You can also specify the entire path instead of just the name.

edit NewFileName

See screenshot below:

Hope this helps!

[Srinivas Gopal Krishna]

@Brahmadev thank you for the reply. I edited the hyperlink and the PreLoadFcn . However, the hyperlink still looking for m files in the original Example folder and not the current folder where the model is in.

This is why I asked is there a working directory for Simscale models. A location where the model looks for these files.

[Brahmadev]

Is the folder that contains the model file and the .m file added in the path? Usually the folder that stores the .slx file is used as the working directory.

[Srinivas Gopal Krishna]

Yes, the .slx and .m file are in the same folder.

However, if I manually change the working directory in Matlab to the new folder, the hyperlink 'Open script' works. But the PreLoadFcn still points to the original location.