Re: traits with different models
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Re: traits with different models



Hi Arthur,

bugger :-)

Cheers

Kim

At 03:57  21/07/00 +1000, Arthur Gilmour wrote:
>Sorry Kim,
>
>If you must do such complicated models, you'' have to do the 
>combinations the tedious way.  I have not automated the kind of
>thing you are attempting because there are so many alternative possabilities.
>
>Arthur
>
>> X-Authentication-Warning: lamb.chiswick.anprod.csiro.au: petidomo set
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>> Date: Fri, 21 Jul 2000 14:38:43 +1000
>> To: asreml@chiswick.anprod.csiro.au
>> From: Kim Bunter <kbunter@metz.une.edu.au>
>> Subject: traits with different models
>> Mime-Version: 1.0
>> 
>> Hi Arthur,
>> 
>> I have been using the parallel method in the pin file for calculating
>> correlations etc from multi-trait analyses, and this works great for series
>> of traits which have the same random effects models. However, it is far
>> from simple where there are several traits which have different models for
>> random effects. Is there a shortcut method in this case for the pin file???
>> Or, should you set up the analysis to give you the same models for each
>> trait, but fixing some to very low values for specific cases (I imagine
>> this might cause problems with convergence etc?).
>> 
>> For example: traits 1 2 3 4 and 5 fitting additive for all, but c2 only for
>> traits 1 and 2. With identical random effects models the phenotypic
>> variance would be simply 1:15 + 16:30. Now that we have c2 for two traits
>> only I find I have to build more than one phenotypic covariance matrix, and
>> remember which one is correct for which traits.....Is there something I
>> have missed in the manual which allows you to add up the matrices
correctly?
>> 
>> Hope you can help with simplifying this....
>> 
>> Cheers
>> 
>> Kim
>> Kim Bunter (M.Rur.Sc)
>> PhD Student
>> Animal Genetics and Breeding Unit
>> University of New England
>> Armidale, NSW, 2351
>> AUSTRALIA
>> 
>> Ph (ISD): -61-2-67733788
>> Fax (ISD): -61-2-67733266
>> email: kbunter@metz.une.edu.au
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>> Asreml mailinglist archive:
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>
>
><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><>
>Arthur Gilmour PhD                  mailto:Arthur.Gilmour@agric.nsw.gov.au
>Principal 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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><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><>
>
>
>
Kim Bunter (M.Rur.Sc)
PhD Student
Animal Genetics and Breeding Unit
University of New England
Armidale, NSW, 2351
AUSTRALIA

Ph (ISD): -61-2-67733788
Fax (ISD): -61-2-67733266
email: kbunter@metz.une.edu.au
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