How to update the Struct value in the workspace from the MATLAB GUI app designer?

I am designing the GUI using the matlab app builder, I want to change(assign) the values of struct which is already present in the workspace using the GUI , but I have used the assignin function for 'variables' its works well but for the 'struct' I dont know how to change.

I want to change the car.year value from the GUI.

Answer 1

[dpb]

A struct variable is a variable, just as any other...

function testit(s)
  v=inputname(1);
  s.year=s.year+10;
  assignin('base',v,s);
end

Illustration --

>> car=struct('year',2020,'loan',25000,'counts',10)
car = 
  struct with fields:

      year: 2020
      loan: 25000
    counts: 10
>> testit(car)
>> car
car = 
  struct with fields:

      year: 2030
      loan: 25000
    counts: 10
>> 

[Manoj Devaraju]

your explaination is great but I would like to know how can I use this inside the function button pushed in GUI. Since 'input name' cannot return input name if not in an active function.

I update the value in the dialouge box of A and then I press the button, then Its already inside the buttonpushed function. please give me suggestion how can be done in this case.

I have attached the image below

[dpb]

You adapt the idea of the function to your usage -- if the struct in question is fixed and immutable, then you can simply encode the variable name as text.

If it can be variable, then you'll need to be able to pass the name to the function and keep it as part of the app data structures.

[Manoj Devaraju]

Ok Thanks for your suggestions. Its working fine