I put a version of the helper functions up on googlecode back at the workshop, renaming the functions with the prefix "genEpi_" so they are easier to pick out in a script.

As these are things that were very popular with users, can we figure out which (all?) of these to move into OpenMx and document (happy to help)? And how they will be named if they are part of the OpenMx distro itself: Perhaps mxl for library (misreadable as upper case i) or mxh for "Helper" or just genEpi_ for the sake of the guinea pigs :-)

1. mxhLabeler()
2. mxh_Labeler()
3. genEpi_Labeler()

citation("OpenMx") currently throws a warning at the end:

citation("OpenMx")
To cite package ‘OpenMx’ in publications use:

Steven Boker, Michael Neale, Hermine Maes, Paras Metah, Sarah Kenny, Timothy Bates, Ryne Estabrook, Jeffrey Spies, Timothy Brick
and Michael Spiegel (). OpenMx: The OpenMx Statistical Modeling Package. R package version 0.2.10-1172.
http://openmx.psyc.virginia.edu

A BibTeX entry for LaTeX users is

@Manual{,
title = {OpenMx: The OpenMx Statistical Modeling Package},

The following indicates that assignment of numeric values to an @values part of an mxMatrix only works when the [] are there. When they are not there (which used to work fine) we get an error:

> DirectionofCausationBcausesA$ACE.B@values
[,1] [,2]
[1,] 0 0
[2,] 0 0
> DirectionofCausationBcausesA$ACE.B@values[]
[,1] [,2]
[1,] 0 0
[2,] 0 0
>
> DirectionofCausationBcausesA$ACE.B@values<-0
Error in checkSlotAssignment(object, name, value) :

See http://openmx.psyc.virginia.edu/thread/450

This portion of the user guide refers to the matrices 'expMeanMZ' and 'expMeanDZ' in several places. However these matrices don't exist. See http://openmx.psyc.virginia.edu/docs/OpenMx/latest/GeneticEpi_Matrix.html. Make sure to svn update before making changes, as I've made some other corrections to the file.