optimplotfunccount
==================

Plot the number of function evaluations of an optimization algorithm



SYNOPSIS
~~~~~~~~


::

    optimplotfunccount ( x , optimValues , state )




Description
~~~~~~~~~~~

This function creates and updates a plot of the number of function
evaluations, depending on the number of iterations. It is a pre-
defined plot function which should be used as an option of the
"PlotFcns" option.



Example
~~~~~~~

In the following example, we use the `optimplotfunccount` function for
use with the `fminsearch` function.


::

    function y=rosenbrock(x)
      y = 100*(x(2)-x(1)^2)^2 + (1-x(1))^2;
    endfunction
    opt = `optimset`_ ( "PlotFcns" , optimplotfunccount );
    [x fval] = `fminsearch`_ ( rosenbrock , [-1.2 1] , opt );




See Also
~~~~~~~~


+ `optimset`_ Configures and returns an optimization data structure.
+ `fminsearch`_ Computes the unconstrained minimimum of given function
  with the Nelder-Mead algorithm.
+ `optimplotx`_ Plot the value of the parameters of an optimization
  algorithm
+ `optimplotfval`_ Plot the function value of an optimization
  algorithm


.. _optimset: optimset.html
.. _fminsearch: fminsearch.html
.. _optimplotfval: optimplotfval.html
.. _optimplotx: optimplotx.html