call variable in a class function in matlab

To call a variable in a class function in Matlab, you should declare it in the class definition or in a class method. The variable can either be a property or a local variable.

Here's an example of how to declare a property and use it in a class method:

classdef MyClass
    properties
        myVariable % Declare class property
    end
    
    methods
        function myMethod(obj)
            % Use class property in class method
            disp(obj.myVariable);
        end
    end
end
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In this example, myVariable is a property that can be accessed by any method in the MyClass class. The myMethod class method accesses and displays the value of myVariable using the obj input argument to reference the instance of the MyClass object.

Alternatively, you can declare a local variable within a class method using the function keyword:

classdef MyClass
    methods
        function myMethod(obj)
            localVar = 42; % Declare local variable
            disp(localVar); % Use local variable in class method
        end
    end
end
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In this example, localVar is a local variable only available within the myMethod class method.