MATLAB GUI Workspace problem

Okay So I am making a MATLAB GUI to run certain Simulink models and I want my program to be able to run any Simulink model, even ones which use a .m file to set their variables.

So I tried to run this code in a button callback

% vars.m is a file with the variable for the simulation
vars.m
% mySim is the simulink model 
sim('mySim')

This does not work because it cannot see the variable ran from vars.m

now I ran the .m file in MATLAB and then ran the program again and this time the simulation ran properly.

So what I have figured out is that the variable when you run them in the GUI environment are stored in a place called "magical faerie land" or the gui workspace and not in the base workspace so when you run Simulink models in that same workspace they do not see the gui workspace and cannot run.

There are two solutions neither of which I know how to implement.

1) Tell Simulink to read the variable from the gui workspace

2) Tell the gui to run the .m file in the "base" workspace

Any help would be appreciated!

Answer 1

[Paulo Silva]

Look at the documentation from the simset function, you can change the workspace from the default MATLAB Workspace to your own GUI function where you call the simulation

SrcWorkspace {base} | current | parent

opt=simset('SrcWorkspace','current')
sim('mySim',opt)

Another way is to run the m file on your GUI and use the code from

save_to_base

but the first option I provided is better, use save to base just if you really want to have the variables available on your workspace.

Finally please appreciate the help provided by MATLAB Answers users because you have already asked several questions but none is accepted, in some of them or maybe all you didn't even said thank you, we are real people not pieces of software, thank you.

[Benjamin]

Sorry about that!