save variables in Matlab GUI

hello;

if I want to save some constant

x=100;

y= 200;

how I save them in the Matlab GUI code as seen below

Answer 1

[Rik]

For general advice and examples for how to create a GUI (and avoid using GUIDE), have look at this thread.

With your current setup you can store them in the guidata:

handles.x=100;
handles.y=200;
guidata(handles.figure,handles)

[Huda M]

okay,

If I want the user to enter text such as; x or y in the inputs after running the program what should I do?

[Rik]

Something like this you mean?

handles.x=a0;
handles.y=a1;

[Huda M]

no I mean in input a0 the user will enter x

and in input a1 the user will enter y

[Rik]

I don't see how that is different from the code I showed. If you mean the user typed in the letter x instead of a value, then str2double also wouldn't work. You can of course store a char array in a variable. Is that what you mean?

[Huda M]

if the input is text such as x or y what should I use instead of str2double?

[Rik]

That depends. Is your goal to store it as text? Or do you want to convert it to symbolic variables?

[Huda M]

I want the user to enter letters but this letter equal to a number

for example a=5 which is saved

then as the user enter a in the input box

Matlab knows it is 5

[Rik]

Then your actual question isn't about how to store variables in a GUI, but how to match user input text to a variable.

How are you storing those variables? This seems like a design waithing for trouble. It sounds like it will be very easy to break things this way, especially if you are going to make the mistake of using eval to solve this.

[Huda M]

so is it impossible to do it?

[Stephen23]

"so is it impossible to do it?"

I doubt that it would be impossible, but it is unlikely to be good data design or good code.

Accessing the property of a class or field of structure would be simpler. Or perhaps a basic array...

https://xyproblem.info/

https://en.wikipedia.org/wiki/XY_problem

https://meta.stackexchange.com/questions/66377/what-is-the-xy-problem

"if I want to save some constant"

Where? In the base workspace or in one of the GUI workspaces or somewhere else?