fminunc (MathScript Function) (Windows, Not in Base Package)

LabVIEW 8.5 Help
August 2007

NI Part Number:
371361D-01

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Member of the optimization class.

Syntax

xmin = fminunc(fun, xstart)

[xmin, fval] = fminunc(fun, xstart)

Uses the Quasi-Newton method to compute the n-dimensional minimum of a function.

Name	Description
fun	Specifies the function whose minimum you want to compute. The function you specify must accept a vector of the same length as xstart and return a scalar. fun is a string.
xstart	Specifies the point at which to begin searching for a minimum value of fun. xstart is a real, double-precision vector.

Name	Description
xmin	Returns the point at which fun has the minimum value. xmin is a real, double-precision vector.
fval	Returns the value of fun evaluated at xmin. fval is a real, double-precision scalar.

This function is not supported in the LabVIEW Run-Time Engine. Do not use this function in a stand-alone application or shared library.

% The myfun function is defined by:
% function f = myfun(x)
% f = -x(1)*x(2)^2+x(2)^2+x(1)^2-x(1);
[XMIN, FVAL] = fminunc('myfun', [0;0;0])