Pass user-input number of variables into Matlab function handle

Question

I am looking to use the fminsearch function for minimization. According to the documentation, fminsearch requires a function handle and initial parameter estimate.

However, I have been struggling to create a function handle that accepts a variable number of inputs. This is an example of how I would like my code to behave:

for i = 1:M
    fhandle = @(x)(x(i) + @fhandle)
end

In this example, the final fhandle is the sum of all x. Is there any way to implement this and optimize all x values such that fhandle is minimized?

LowPolyCorgi · Accepted Answer · 2015-08-23 08:15:08Z

3

Function handles accept varargin. So your exemple can be rewriten to accept a variable number of inputs:

fhandle = @(varargin) sum([varargin{:}])

and then

>> fhandle(1)
ans =
     1

>> fhandle(1,2)
ans =
     3

>> fhandle(1,2,3)
ans =
     6

Best,

answered Aug 23, 2015 at 8:15

LowPolyCorgi

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