Storing function and variable values as the function runs

I know this must be very simple but please help if you can! I have the following code. I am trying to find out values of p for every possible value of r and c. I would also like to store the function value along with the variable values in a matrix. I can't seem to do any of it and I'm fairly sure what I am generating isn't right. Please help!

function p= penalty(r,c) %r =current point value %c= current penalty

p= ((r/150).^-2)*c; end

%find values of p for varying values of r and c clear f; for k=1 for i=1 while k<200 while i<200

    f(k, i)=penalty(k,i); 

   k=k+1
   i=i+1
          end

      end

    end

end

Answer 1

[Adam]

for k=1:200
  for i=1:200 

      f(k, i)=penalty(k,i); 

      end
  end

is the simplest change to your code to work using loops.

Don't mix for and while together. For is a loop, you don't want while in there as well as for.

If you want a vectorised version, change your function to:

function p= penalty(r,c) %r =current point value %c= current penalty

p = ((r'/150).^-2) * c;

end

and the call to simply:

k = 1:200;
i = 1:200;

f = penalty(k,i);

[Kim]

Thank you so much. I am so new to code writing and finding it hard to implement even simple mathematics!

[Adam]

Note I just edited that answer to include the vectorised version.