How to save variables in MATLAB function in the workspace

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ojonugwa adukwu 2020-5-29

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评论： ojonugwa adukwu 2020-6-1

Good day.

I have a MATLAB function which I run from a script. I want to plot some variables in the function from my script so I want to save these variables in my workspace. Is there any way to do it other than using them as an output to the function when I call it from the script? The variables are many so I am trying to avoid too many output arguments.

Thanks now and always.

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Stephen23 2020-5-29

Messing around with assignin or lots of output variables is not a good approach.

Just assign the variables to fields of a structure and return that. Simple.

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Robin Kirsch 2020-5-29

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Use assignin command

function y = test()

assignin('base','x',42)

y = 0

end

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Robin Kirsch 2020-5-29

the workspace can be empty and it will save it to it

Robin Kirsch 2020-5-29

this works only if you run your function first and then run your script to plot the variables of course

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Cris LaPierre 2020-5-29

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You could save them to a mat file. When you want to plot them, load the mat file in your script.

You could also consider placing the variables in a structure. That way, your function only needs to have one output, yet all the variables can be passed out.

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Cris LaPierre 2020-6-1

Just to clarify, that wasn't Stephen's suggestion. His recommendation was NOT to do that. He suggested using a structure, as did I. That would likely be the quickest approach since you don't have to write the variables to the workspace or the harddrive.

ojonugwa adukwu 2020-6-1

Sorry. I meant Robin Kirsch. The "assignin" he suggested is slow but it is faster than the process of saving to matfile. I really do not know why that has been extremely slow for me. Hopefully I will get to know why.

Thanks so much

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