fminunc with a one-variable function

[John W. Eaton]

On 24-Jul-2009, Jonathan Stickel wrote:

| Jaroslav Hajek wrote:
| > On Thu, Jul 23, 2009 at 5:32 PM, Jonathan Stickel<jjstickel at vcn.com> wrote:
| >> I see the following when I use fminunc to minimize a function of just one
| >> variable:
| >>
| >>  function F = theF(x)
| >>   F = x.^2 + exp(x);
| >>  endfunction
| >>  x0 = 1;
| >>  [xmin,fmin] = fminunc(@theF,x0)
| >>
| >> error: Invalid call to cholupdate.  Correct usage is:
| >>
| >>  -- Loadable Function: [R1, INFO] = cholupdate (R, U, OP)
| >>
| >>
| >> I know that there are other minimization functions that can be used for
| >> single-variable functions, but fminunc should work too.
| >>
| >> Thanks,
| >> Jonathan
| >>
| > 
| > Please try
| > http://hg.savannah.gnu.org/hgweb/octave/rev/5fcf008c7c41
| > 
| 
| What is the best way for me to try this update?  Simply running 
| mkoctfile on the new chol.cc generates very many errors.  Here are the 
| last few:
| 
| /opt/local/include/octave-3.2.0/octave/utils.h:113: error: two or more 
| data types in declaration of $,1rx(Boctave_sleep$,1ry(B
| /opt/local/include/octave-3.2.0/octave/utils.h:115: error: two or more 
| data types in declaration of $,1rx(Boctave_usleep$,1ry(B
| /opt/local/include/octave-3.2.0/octave/utils.h:118: error: two or more 
| data types in declaration of $,1rx(Boctave_raw_vsnprintf$,1ry(B
| chol.cc:48: error: $,1rx(BOCTAVE_EXPORT$,1ry(B does not name a type
| chol.cc:48: error: $,1rx(BOCTAVE_EXPORT$,1ry(B does not name a type
| chol.cc:48: error: $,1rx(BOCTAVE_EXPORT$,1ry(B does not name a type
| chol.cc:341: error: $,1rx(BOCTAVE_EXPORT$,1ry(B does not name a type
| chol.cc:341: error: $,1rx(BOCTAVE_EXPORT$,1ry(B does not name a type
| chol.cc:341: error: $,1rx(BOCTAVE_EXPORT$,1ry(B does not name a type
| chol.cc:491: error: $,1rx(BOCTAVE_EXPORT$,1ry(B does not name a type
| chol.cc:491: error: $,1rx(BOCTAVE_EXPORT$,1ry(B does not name a type
| chol.cc:491: error: $,1rx(BOCTAVE_EXPORT$,1ry(B does not name a type
| chol.cc:583: error: $,1rx(BOCTAVE_EXPORT$,1ry(B does not name a type
| chol.cc:583: error: $,1rx(BOCTAVE_EXPORT$,1ry(B does not name a type
| chol.cc:583: error: $,1rx(BOCTAVE_EXPORT$,1ry(B does not name a type
| chol.cc:800: error: $,1rx(BOCTAVE_EXPORT$,1ry(B does not name a type
| chol.cc:800: error: $,1rx(BOCTAVE_EXPORT$,1ry(B does not name a type
| chol.cc:800: error: $,1rx(BOCTAVE_EXPORT$,1ry(B does not name a type
| chol.cc:984: error: $,1rx(BOCTAVE_EXPORT$,1ry(B does not name a type
| chol.cc:984: error: $,1rx(BOCTAVE_EXPORT$,1ry(B does not name a type
| chol.cc:984: error: $,1rx(BOCTAVE_EXPORT$,1ry(B does not name a type
| chol.cc:1116: error: $,1rx(BOCTAVE_EXPORT$,1ry(B does not name a type
| chol.cc:1116: error: $,1rx(BOCTAVE_EXPORT$,1ry(B does not name a type
| chol.cc:1116: error: $,1rx(BOCTAVE_EXPORT$,1ry(B does not name a type
| /opt/local/include/octave-3.2.0/octave/defun-int.h:47: error: storage 
| size of $,1rx(Binstall_dld_function$,1ry(B isn$,1ry(Bt known
| /opt/local/include/octave-3.2.0/octave/defun-int.h:42: error: storage 
| size of $,1rx(Binstall_builtin_function$,1ry(B isn$,1ry(Bt known
| 
| I can run mkoctfile fine on some older octave c++ files I have lying around.

The .oct files that are part of Octave can't be built outside of the
Octave build process unless you do some modification.  The #include
directives assume that you are building inside the Octave source tree.

jwe