Parameter and constraints definition

Hi all, I am currently working on a code that requires calling 4 functions for a fixed number of iterations. My question is how to define the parameters and constraints in one main function that are called by different functions. A rough format :

    Global (??? how to define parameters and constraints) 

    For i=Niterations

     Function A (calls function B with a @function B)

     Function B(having constraints)

     Function C(taking the values from the constraints and call function D and E)
             Function D runs to give the geometry
             Function E calculates the cost function
   end

Best Regards,

Vivek

[Adam]

I always use classes for this type of programming (well, all types of programming) to wrap up all the parameters and pass them around as a single variable. In this case maybe two classes if parameters and constraints are distinct.

If you are not familiar with classes then structs will also do the job, especially if you aren't needing to add functions to what would be the parameters class.

I would strongly advise against global variables, in all cases, but probably especially so if you are nesting function calls.

[kumar vivek]

Hi Adam,

Thanks for the inputs. I used structures and i was able to run the code smoothly. I have one more query to ask. Now i have a vector which i want to optimize.

   Suppose g= [1 2 3 4 5 6 7 8 9];
   lb=zeros(1,9);
   ub=10*ones(1,9);

I am using the CPSO for optimization. I want to optimize 4 values from the vector g ( eg g(2),g(3),g(5),g(6)) but i need all the values to be fed to another code in order to compute the model. Is there any effective way to do it.

[Adam]

You can create a sub-vector easily from your full g vector as e.g.

g( [2 3 5 6] )

[kumar vivek]

Thanks adam for the inputs. It helped a lot.