OpenMx

A Structural Equation Modeling package that encourages users to treat model specifications as something to be generated and manipulated programmatically.

Example models which OpenMx can fit include confirmatory factor, multiple group, mixture distribution, categorical threshold, modern test theory, differential equations, state space, and many others.

Models may be specified as RAM or LISREL mxPaths, or directly in matrix algebra.

Fit functions include ML (summary and full information) and WLS.

The stable branch can be considered our current alpha release.

An easy way to install the stable branch is to use devtools:

require(devtools)
install_github("OpenMx/OpenMx", ref="stable")

Developers commit to the master branch. Intrepid users are encouraged to install the master branch.

The stable branch is updated automatically when all models/passing and models/nightly tests pass along with make cran-check.