[Developers] FW: [ADMB Users] Cubic splines

Mon May 23 09:27:05 PDT 2011

On 11-05-23 08:59 AM, Mark Maunder wrote:

I wrote the original dvariable spline code in about a half a day 
(inspired by NR. ) It worked fine for
years. Never wrote the df1b2 version (that I can recall although that 
doesn't mean anything)
although an unoptimized one could have been done in 10 minutes. Why is 
this rocket science?
I hate going backwards.

> *From:*Luis Ridao [mailto:luridao at gmail.com]
> *Sent:* Monday, May 23, 2011 2:18 AM
> *To:* Mark Payne
> *Cc:* Ian Taylor; Mark Maunder; users at admb-project.org; Alexandre 
> Aires-Da-Silva; Simon Hoyle; ???
> *Subject:* Re: [ADMB Users] Cubic splines
>
> I wish to add that splines in version 10.1 (at least in my case) do 
> not work.
>
> The same code used to run without problems on 10.0.
>
> Best,
>
> LRC
>
> P.S: I have raised this issue previously on this list.
>
> On Mon, May 23, 2011 at 9:50 AM, Mark Payne <mpa at aqua.dtu.dk 
> <mailto:mpa at aqua.dtu.dk>> wrote:
>
> Are Splines fulled implemented in both ADMB and ADMB-RE? I struct some 
> problems with them in ADMB-RE, but haven't had time to look closer as 
> yet....
>
>
>
> -----Original Message-----
> From: users-bounces at admb-project.org 
> <mailto:users-bounces at admb-project.org> on behalf of Ian Taylor
> Sent: Fri 5/20/2011 9:00 PM
> To: 'Mark Maunder'; users at admb-project.org <mailto:users at admb-project.org>
> Cc: 'Alexandre Aires-Da-Silva'; '???'; 'Simon Hoyle'
> Subject: Re: [ADMB Users] Cubic splines
>
> Hi Mark,
>
> I found http://en.wikipedia.org/wiki/Spline_interpolation to be 
> informative.
>
>
> Also, inspired by your email, I've discovered that there's very useful
> information here:
>
> http://admb-project.org/documentation/api/group__cub__spline.html
>
> I just added that 2nd link to the FAQ item about splines, but obviously
> that's no substitute for some proper documentation in the user manual.
>
>
> -Ian
>
>
>
> From: Mark Maunder [mailto:mmaunder at iattc.org <mailto:mmaunder at iattc.org>]
> Sent: Friday, May 20, 2011 11:40 AM
> To: users at admb-project.org <mailto:users at admb-project.org>
> Cc: 'Jim.Ianelli at noaa.gov <mailto:Jim.Ianelli at noaa.gov>'; Ian Taylor; 
> '???'; 'Simon Hoyle'; Alexandre
> Aires-Da-Silva
> Subject: Cubic splines
>
>
> Does anyone have documentation on how cubic splines are implemented in 
> ADMB?
> Or a simple description of how cubic splines are implemented in general.
>
>
>
> There are some examples on how to use them in ADMB
>
>
>
> http://admb-project.org/community/tutorials-and-examples/splines
>
>
>
> http://admb-project.org/community/tutorials-and-examples/splines/splines.tpl
> /view?searchterm=spline 
> <http://admb-project.org/community/tutorials-and-examples/splines/splines.tpl%0d%0a/view?searchterm=spline>
>
>
>
> http://groups.google.com/group/admb-users/browse_thread/thread/e6ba196af3478
> dc0/1952dcc0dfbb6241?#1952dcc0dfbb6241 
> <http://groups.google.com/group/admb-users/browse_thread/thread/e6ba196af3478%0d%0adc0/1952dcc0dfbb6241?#1952dcc0dfbb6241>
>
>
>
>
>
> Thanks,
>
>
>
> Mark
>
>
>
>
>
> Mark Maunder
>
>
>
> Head of the Stock Assessment Program
>
> Inter-American  Tropical Tuna Commission
>
>
> President
>
> ADMB Foundation
>
>
>
> 8604 La Jolla Shores Drive
> La Jolla, CA, 92037-1508, USA
>
> Tel: (858) 546-7027 <tel:%28858%29%20546-7027>
> Fax: (858) 546-7133 <tel:%28858%29%20546-7133>
>
> mmaunder at iattc.org <mailto:mmaunder at iattc.org>
> http://www.fisheriesstockassessment.com/TikiWiki/tiki-index.php?page=Mark+Ma
> under
>
>
>
> Visit the AD Model Builder project at
>
> <http://admb-project.org/> http://admb-project.org/
>
>
>
>
> See the following website for information on fisheries stock assessment
>
> http://www.fisheriesstockassessment.com/
>
>
>
>
> From: users-bounces at admb-project.org 
> <mailto:users-bounces at admb-project.org> 
> [mailto:users-bounces at admb-project.org 
> <mailto:users-bounces at admb-project.org>]
> On Behalf Of Campbell, Alex
>
> Sent: Thursday, May 19, 2011 6:15 PM
>
> To: users at admb-project.org <mailto:users at admb-project.org>
>
> Subject: Re: [ADMB Users] 10.1 ic > imax
>
>
>
>
> admb 10.0 and 9.1 on linux give me the same behaviour. so not a version
> thing. one day "soon" i'll find time to debug..
>
>
>
> convergence critieria is not necessarily the issue because that determines
> ultimate convergence, not the question of whether the process has hung
>
>
> grepping "ic > imax" points me to fmmtr1.cpp and newfmin.cpp but without
> debugging i'm not much wiser!
>
>
>  -alex
>
>  _____
>
> From: users-bounces at admb-project.org 
> <mailto:users-bounces at admb-project.org> 
> [mailto:users-bounces at admb-project.org 
> <mailto:users-bounces at admb-project.org>]
> On Behalf Of Campbell, Alex
> Sent: Friday, 13 May 2011 4:33 PM
> To: users at admb-project.org <mailto:users at admb-project.org>
> Subject: [ADMB Users] 10.1 ic > imax
>
> Hi folks
>
> I've recently installed admb 10.1 on a 'real' system (SuSE Linux 
> Enterprise
> Server 11 SP1, gcc 4.3) and I've noticed different behaviour vs my 32-bit
> admb 10.0 windoze setup. Specifically the ic > imax is minimum attained
> issue pops up on the 10.1 where it does not on the 10.0. Both 
> installations
> give me the same parameter estimates, but obviously a) something is
> different, b) it appears to be worse in the newer version and c) it 
> would be
> nice to know why. The first thing that came to mind is that the default
> value of the convergence criterion might have changed between 10.0 and 
> 10.1
> but I ran the new system with -crit 1e-4 and same behaviour.
>
> Any ideas?
>
>
>
>
>
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