MATLAB: Is there a hidden workspace in Simulink other than the model workspace

simulinksimulink hidden workspace

When running a Simulink model, I get unexpected behaviors if I don't call a clear all before the execution. Strange thing is that both the base and the model workspaces are empty. What could be happening? Where else can I look for those hidden variables?

Thanks!

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I found out what was wrong: Simulink won't clear S-functions static memory from run to run. I'm using clear mex for that. Thanks!

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MATLAB: Load() into workspace

Why don't you use textread or textscan or fscanf?

doc textread
doc textscan
doc fscanf

You can control the type of variables and furthermore you can even read the data with different delimiters.

MATLAB: Simulink mask text cannot access matlab workspace

Masks, by design, have their own separate workspace so there is no conflict between internal variables to a block and anything you do outside of that. So, you cannot directly read from the MATLAB base workspace.

The first question I would ask myself is: Why does that text need to exist in the base workspace? This can affect the robustness of your mask display code because anyone (or anything) could overwrite or delete that text and break your block. Please consider avoiding the base workspace for that reason.

If you're doing something where several blocks need to "share" this variable, then the base workspace becomes more of a viable option to temporarily store a variable. If so, you can use the evalin function to pick an expression from the base workspace and use it in your mask's "Initialization" tab.

 revString = evalin('base','revString')

Once you do that, you have a variable called revString also in the mask, which pulls from whatever the expression revString evaluated to in the base workspace.

- Sebastian

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