Re: orthog polynomials and splines
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Re: orthog polynomials and splines



Dear Luis,

There seems to be several problems.

1 is confusion caused by have terms labelled  age_fac and age
  Change age_fac to Age_fac
  
  However, you can just have age in the data and  use dev(age)
  to have a factor version of it.
  
2  There is a bug in ASREML when checking for interactions involving
   Pedigree terms.  Hence 'Define structure for spl(age) ' arises
   becasue a bug meant it thought this involved and interaction of subject.
   
3  Do you really want a spline of the genetic variation of age [for each 
subject]?  In general this would be very computationally demanding.
   

I'll update the PC version of ASREML on BBSRC within the hour if I can.
The other versions will have to wait a little while.

Arthur

> Date: Tue, 26 May 1998 07:44:58 -0400 (EDT)
> From: cronopio@altavista.net
> Mime-Version: 1.0
> To: asreml@chiswick.anprod.CSIRO.AU
> Content-Transfer-Encoding: 7bit
> Subject: Re: orthog polynomials and splines
> 
> Hi Arthur,
> 
> Yes, the fixed spline was a typo.  I was asking about the structures for 
spline because whenever I try to run a program fitting splines I get the error:
> 
> Fault 1  Define structure for spl(age)
> 
> that is not in the manual.
> 
> 
> My program is:
> 
> Analysis of FA8102, spline (model 1a)
>  subject  !P
>  mother  49
>  father   1
>  block    8
>  age_fac 10 !I
>  age
>  ht
>  di
> c:\arauco\fa8102un.dat !MAKE !REPEAT
> c:\arauco\fa8102un.dat !maxit 30
> ht~mu lin(age) !r spl(age) subject subject.age subject.spl(age) dev(age)
> 
> or just
> ht~mu age !r spl(age) subject subject.age subject.spl(age) 
> 
> with the same problem.
> 
> Luis Apiolaza
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> Institute of Veterinary, Animal and Biomedical Sciences
> Massey University
> Palmerston North
> New Zealand
> L.A.Apiolaza@massey.ac.nz
> 
> "Have little and you will get,
> have much and you will be confused"
> Lao Tzu
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> 
> 
> 
> 


<><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><>
Arthur Gilmour PhD                    email: Arthur.Gilmour@agric.nsw.gov.au
Senior Research Scientist (Biometrics)                 fax: <61> 2 6391 3899
NSW Agriculture                                             <61> 2 6391 3922
Orange Agricultural Institute               telephone work: <61> 2 6391 3815
Forest Rd, ORANGE, 2800, AUSTRALIA                    home: <61> 2 6362 0046

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