I want to save variables from a nested function into the parent function workspace so that I can use these variables again in another nested function. How do I do this?

parent function ...

%user input numbers that go into BeamReactions
BeamReactions(BeamLength,BeamMass,Load,LoadX,LoadAngle)
%this is the function that I want to use answers from BeamReactions in
BeamLoadPlot(BeamLength,BeamWeightN,BeamWeightN_X,Load,LoadX,LoadAngle,FA_Y,FB_X,FB_Y)

Answer 1

[Walter Roberson]

Don't do that. Instead, inside the parent function but before the definition of either nested function, assign some value to the variables, even if just []. That tells MATLAB that the variable is to be shared.

[Julia Hambright]

Thank you! I didn't know it was that easy.

Answer 2

[Stephen23]

The whole point of nested functions is that you don't have to pass data as input/output arguments. All you need to do is define those variables in the workspace of the main function, and then all of the nested functions can access them:

function val = mymain()
val = [];
mynest()
    function mynest()
        val = 2;
    end
end

Try calling it and see what the output is.

[Julia Hambright]

Thank you! I didn't know it was that easy.

Answer 3

[Selin Ertunan]

hello, what exactly do we need to write inside the parentheses? When I write the code like this, I can see the nested variables, but still cannot save them as files.