Anonymous function alternative for MATLAB Coder?

Question

Mike Wa 2015-7-28

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回答： Ryan Livingston 2015-7-29

I'm using fmincon and would like to export my code to C++ via MATLAB Coder. However, my objective function uses more arguments than just the variable being optimised. To allow this, I use an anonymous function handle for my objective function:

idealx=fmincon(@(x)obj_fun(x,y,z,...),...);

MATLAB Coder does not support anonymous functions. What alternative can I use to pass additional objective function arguments that MATLAB Coder supports?

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Ryan Livingston 2015-7-29

MATLAB Coder unfortunately does not support fmincon either since it isn't in the list of supported functions.

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Answer 1

Muthu Annamalai 2015-7-28

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编辑：Muthu Annamalai 2015-7-28

在 MATLAB Online 中打开

You may write out your function with extra arguments as object.

First define this class,

classdef FcnWithArgs
   properties
    a
    b
    c
   end
   methods
     function obj = FcnWithArgs(a,b,c)
         obj.a = a;
         % etc.
     end
     function yval = invoke(obj,xval)
         yval = original_function( xval, obj.a, obj.b, obj.c )
     end
  end
end

Next you can make an instance of this class and use it with fmincon This could be codegen compatible. Worth a try.

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Answer 2

Ryan Livingston 2015-7-29

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For the general issue of replacing an anonymous function for code generation, see this question on fminsearch that describes modelling an anonymous function using persistent variables.