WOMBAT – A program for Mixed Model Analyses by Restricted Maximum Likelihood

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wombat:ex5page [2018/07/02] (current)
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 +====== Example 5 for WOMBAT ======
  
 +Download [[http://​didgeridoo.une.edu.au/​km/​download.php?​file=example5.tar.gz|example5.tar.gz]]
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 +This example considers a simple animal model for 6 traits with contemporary groups as the only fixed effect. The same model is fitted for all traits. In addition to the "​grouped"​ specification of the layout of the data file, it demonstrates a reduces and analysis and how to impose a factor-analytic structure on the genetic covariance matrix.
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 +  * **A** : full rank analysis ​ --   ​simple data layout in .par file
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 +  * **B** : reduced rank analysis fitting 4 principal components ​ --   '​grouped'​ data layout in .par file
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 +  * **C** : analysis fitting a factor-analytic structure for genetic covariance matrix
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 +  * **D** : full rank analysis, illustrating use of penalized REML ('​bending'​) for a chosen tuning parameter
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 +See also [[wombat:​famodel|Fitting a factor-analytic model]] for details on how to trick WOMBAT to fit such model.
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