====== Example 15 ======

Download [[http://didgeridoo.une.edu.au/km/download.php?file=example15.tar.gz|example15.tar.gz]]

This example illustrates how to pool estimates of covariance
components by (penalized) maximum likelihood using WOMBAT.  

The example is comprised of 14 traits, with 6 traits measured on few animals and the remaining records representing 4 traits with measures
on males and females treated as different traits (Results from Meyer 2007; J. Anim. Breed. Genet, 124:50-64). There are results from 76
bivariate and one six-variate analysis to be combined. Due to traits measured on different subsets of animals (sexes) there are a number of
residual covariances which are to be fixed at zero.

A:  All part analyses have been carried out using WOMBAT and a `full' parameter file is available

B:  Results from part analyses are summarized in a single file and a `minimum' parameter file is used.


----

Additional documentation for pooling is available in a set of notes which summarises the 
relevant options and directives available in WOMBAT, and shows a small, 4-trait example:

{{:wombat:rnote_wombatpool.pdf|RNote_WOMBATPool.pdf}}

----
<bibtex>
@Article{km12,
  author =	 {Meyer, K.},
  title =	 {A penalized likelihood approach to pooling estimates
                  of covariance components from analyses by parts},
  journal =	 {Journal of Animal Breeding and Genetics},
  year =	 2013,
  volume =	 130,
  number =	 4,
  url =		 {http://dx.doi.org/10.1111/jbg.12004},
  doi =		 {10.1111/jbg.12004},
  pages =	 {270--285}
}
</bibtex>