Problem in using Function with in a function
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I am writing a code to join two GUI blocks. In my code i have genereated matrices A, B, C and X based on the input. now i need to optimize A and B so i added an optimize function to it. But in the optimization i need to use X and C which are already generated in the above function. can any one help how i can declare X and C as global functions so that the optimization will take the same value what ever my first function is generating.
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Accepted Answer
Titus Edelhofer
on 13 Jan 2012
Hi,
you don't need to use global variables. You can use anonymous functions to do so. If this is the function to be optimized:
function y = myobjective(AB, C, X)
% AB is the variable to be optimized, e.g.,
A = AB(1:5);
B = AB(6:10);
y = ...; % compute y with AB, C, X ...
Then in your function where you start the optimization:
C = ...; % compute C
X = ...; % compute X
% now build the objective function handle: C and X are "stored"
% in fun, so when called by optimizer, C and X are passed
fun = @(x) myobjective(x, C, X);
% call optimizer
x = fmincon(fun, ...);
Hope this helps,
Titus
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