fminbnd.outputfun

The current state of the algorithm either 'init', 'iter' or
 'done'.

state

The data at the current state. This is an object of class 
 'neldermead.data', i.e. a list with the following elements:<dl class="dl-horizontal">
 <dt>x</dt><dd>The current parameter estimates.</dd>
 <dt>fval</dt><dd>The current value of the cost function.</dd>
 <dt>simplex</dt><dd>The current simplex object.</dd>
 <dt>iteration</dt><dd>The number of iterations performed.</dd>
 <dt>funccount</dt><dd>The number of function evaluations.</dd>
 <dt>step</dt><dd>The type of step in the previous iteration.</dd>
 </dl>

data

This is an object of class 'optimbase.functionargs' which 
 contains specific data of the <code>fminbnd</code> algorithm:<dl class="dl-horizontal">
 <dt>Display</dt><dd>what to display</dd>
 <dt>OutputFcn</dt><dd>the array of output functions</dd>
 <dt>PlotFcns</dt><dd>the array of plot functions</dd>
 </dl>

fmsdata

This function calls the output function and make it match neldermead
 requirements. It is used in the <code>fminbnd</code> function as the
 <code>outputcommand</code> element of the neldermead object (see
 <code>?neldermead</code> and <code>?neldermead.set</code>).

 method 

Provides several direct search optimization algorithms based on the
simplex method. The provided algorithms are direct search algorithms, i.e.
algorithms which do not use the derivative of the cost function. They are
based on the update of a simplex. The following algorithms are available: the
fixed shape simplex method of Spendley, Hext and Himsworth (unconstrained
optimization with a fixed shape simplex, 1962) <doi:10.1080/00401706.1962.10490033>,
the variable shape simplex method of Nelder and Mead (unconstrained optimization
with a variable shape simplex made, 1965) <doi:10.1093/comjnl/7.4.308>, and
Box's complex method (constrained optimization with a variable shape simplex,
1965) <doi: 10.1093/comjnl/8.1.42>.

Sebastien Bihorel

neldermead

R Port of the 'Scilab' Neldermead Module

Michael Baudin

fminbnd.outputfun function

The data at the current state. This is an object of class 
 'neldermead.data', i.e. a list with the following elements:<dl class='dl-horizontal'>
 <dt>x</dt><dd>The current parameter estimates.</dd>
 <dt>fval</dt><dd>The current value of the cost function.</dd>
 <dt>simplex</dt><dd>The current simplex object.</dd>
 <dt>iteration</dt><dd>The number of iterations performed.</dd>
 <dt>funccount</dt><dd>The number of function evaluations.</dd>
 <dt>step</dt><dd>The type of step in the previous iteration.</dd>
 </dl>

This is an object of class 'optimbase.functionargs' which 
 contains specific data of the <code>fminbnd</code> algorithm:<dl class='dl-horizontal'>
 <dt>Display</dt><dd>what to display</dd>
 <dt>OutputFcn</dt><dd>the array of output functions</dd>
 <dt>PlotFcns</dt><dd>the array of plot functions</dd>
 </dl>

fminbnd.outputfun: fminbnd Output Function Call

Description

Usage

Arguments

Value

See Also