Re: regdatasmooth

[Jonathan Stickel]

On 9/16/09 address@hidden wrote:
> Date: Tue, 15 Sep 2009 13:14:25 -0700 (PDT)
> From: esteban1 <address@hidden>
> Subject: regdatasmooth
> To: address@hidden
> Message-ID: <address@hidden>
> Content-Type: text/plain; charset=us-ascii
>
>
> Hi,
>
> I have a problem with the regdatasmooth function implemented in the
> data-smoothing-1.2.0 package. Whenever I want to run a demo or the function
> itself I get the following error: 
> error: unary operator `'' not implemented for `list' operands.
>
> The regdatasmooth function calls the rgdtsmcore function. This function
> works fine, when I run it with my parameters.
>
> But I would like to use regdatasmooth since it optimizes the smoothing
> through lambda and other parameters.
> I allready searched the web and the mailing list but I was not able to find
> something.
>
> Thanks for the help!


There have been some changes to the optimization functions in Octave and 
Octave-forge recently.  There is a new fminunc function with a different 
implementation in Octave that takes different arguments.  To get the 
latest regdatasmooth, download it from here:

http://octave.svn.sourceforge.net/viewvc/octave/trunk/octave-forge/main/data-smoothing/inst/

Unfortunately, there is a bug in Octave <= 3.2.2 related to cholesky 
factorizations that causes fminunc not to work for single variable 
functions.  A patch is available that may be included in the upcoming 
3.2.3 release (not completely sure).

As a workaround, you may put the fminunc from /Octave-forge/ in a place 
in your path so that it supersedes the fminunc in /Octave/.  If you do 
that, you should use the previous version of regdatasmooth (the one that 
is currently not working for you).

Let me know if you have more trouble or if you get it working.

Jonathan


P.S.
I am moving this thread to octave-dev since it is about an octave-forge 
function.  When replying, please remove "help-octave" from the send list.