MATLAB: Loading .mat file content into base workspace by calling load function within a gui callback function

base workspaceguiload

I can't load the data I want into base workspace (although they appear perfectly in the command window) for furthe use. I use Load function within a gui callback function and I think this what makes loading process difficult. To be more specific, I need to load variables tmp and specs into base workspace, any ideas? Please see the attached screenshot for more details. Many thanks

Best Answer

I'm confused about the "import filename.*" .

It is ugly and you find many threads - hundreds - about suggestions to avoid the remote creation of variables. Such methods impede the debugging drastically. So don't do this!

But if you are willing to apply this:

assignin('base', 'Act_specs', tmp);
assignin('base', 'specs',     tmp.Act_Specs);

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MATLAB: How to pass variable from GUI to matlab workspace

don't use semicolon ;

y=5

MATLAB: Load

Please read the Getting Started chapters of the documentation. There you find the explanation, that each function has its own workspace - a kind of container for the local variables - to avoid interferences. The command load imports the contents of the file in the current workspace, such that it appears in the base workspace, when it runs in the command windows. But when load is called inside a function, the imported variables are available only there. And this is important and safe.

To reduce confusions and unwanted side-effects it is recommended to store the output of load in a variable:

Data = load(FileName);

Then using Data.a shows directly, where the value is comming from. But in:

a = 3.1415;
load(FileName);  % NOT CLEAN!
disp(a);

Now it is impossible to know the source of the value of a when reading the source code. This makes the debugging much harder.

Best Answer

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MATLAB: How to pass variable from GUI to matlab workspace

MATLAB: Load

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