passing parameter values beween a GUI and other scripts

I'm trying to built a GUI (desigend in appdesigner matlab 2020a) to collectuser input data from a scritp to execute calculations, however it is unclear how to get the user input into the workspace. I did declare the variables to have Access = public:

properties (Access = public)

Roi_cam1;

Roi_cam2;

Roi_cam3;

XY_cam1;

XY_cam2;

XY_cam3;

Cal_cam1; % Description

Cal_cam2;

Cal_cam3;

videoName_cam1;

videoName_cam2;

videoName_cam3;

shape;

disch;

Circ;

Exp_name;

Directory;

end

The matlab documentation is not exactly very clear on the topic of getting data in and out of a GUI. Any help is welcome

kind regards

Francois Clemens

Answer 1

[Sreeram]

Hi Francois,

I understand that you are trying to get certain variables from MATLAB App Designer to the base workspace.

1. Since there are multiple variables to be exported, you can save the variables in a MAT file and then load it into the base workspace:

% In MATLAB App Designer
save("userInputData.mat"," Roi_cam1"," Roi_cam2"," Roi_cam3")

% In the script
load("userInputData.mat")

Here is the relevant section of the “save” function documentation:

https://www.mathworks.com/help/releases/R2020a/matlab/ref/save.html#d120e1104062

2. Another way is to use the “assignin” function to save a variable to the 'base' workspace:

assignin('base', 'Roi_cam1', Roi_cam1)

More details are available on the documentation page for “assignin”:

https://www.mathworks.com/help/releases/R2020a/matlab/ref/assignin.html

You may refer to the following relevant MATLAB Answers thread too:

https://www.mathworks.com/matlabcentral/answers/413849

I hope this helps!