Ωnyx is a free software environment for creating and estimating structural equation models (SEM). It provides a graphical user interface that facilitates an intuitive creation of models, and a powerful back end for performing maximum likelihood estimation of parameters. Path diagrams in Ωnyx can be exported to OpenMx, lavaan, and Mplus to allow an easy transition to script-based SEM software. Also, OpenMx scripts can be transformed into a path diagrams in Ωnyx.
Ωnyx is provided free of charge.
Oertzen, T. v., Brandmaier, A. M., & Tsang, S. (2015). Structural equation modeling with Ωnyx. Structural Equation Modeling, 22, 148-161. doi:10.1080/10705511.2014.935842
About the team
Ωnyx is a collaboration of
- Timo von Oertzen
- Andreas M. Brandmaier Follow @brandmaier
- Siny Tsang
Special thanks go to:
Joshua N. Pritikin for coding the LaTeX export and the graph auto-layout
Also, we would like to thank:
Ulman Lindenberger, Steven Boker, and the OpenMx team
Our work was kindly supported by University of Virginia and the Max Planck Institute for Human Development.