Access Variables from within function using Globals

Question

I want to access variables from within a function using globals

Global x y z
Answer = MyFunction(4)
y



Function Result = MyFunction(x)
y=x+1;
z=y+1;

I would like to be able to access the value of y from the last time I call the function. Is it possible to do this?

zellus · Accepted Answer · 2011-01-18 08:10:41Z

3

Create the following function on the MATLAB search path:

function z = myFunction(x)
global y
fprintf('in myFunction -> y = %f\n', y);
y=x+1;
z=y+1;
end

Call myFunction from a script or command line.

global y;
y = 0;
answer = myFunction(3);
fprintf('past myFunction -> answer = %f\n', answer);
fprintf('past myFunction -> y = %f\n', y);

Since handle classes have been introduced to the MATLAB object model, I suggest not using globals.

answered Jan 18, 2011 at 8:10

zellus

9,5825 gold badges41 silver badges58 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

Colin K Over a year ago

Persistent variables can also be a good alternative to a global, depending on what you are trying to do. I agree that the use of globals should be avoided whenever possible (which is most of the time),

Collectives™ on Stack Overflow

Access Variables from within function using Globals

1 Answer 1

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related