global variable in matlab

In MATLAB, to create a global variable, you can use the global keyword followed by the name of the variable. Here is an example:

main.m
global myVariable
myVariable = 10;
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You can now use myVariable in any function or script. Just make sure that you use the global keyword before you assign or modify the value of the variable. Here's an example function that uses the global variable:

main.m
function myFunction()
    global myVariable
    disp(myVariable);
end
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When you call myFunction(), it should display the value of myVariable (which is 10 in this case).

It is generally not recommended to use global variables because they can lead to unexpected behavior and make code harder to debug and maintain. Instead, it is recommended to use function inputs and outputs to share data between functions.