A few changes in this release of the OpenMx binary as we draw nearer to the 1.0 release and the freeze of features.
A mechanism for periodically saving checkpoint files to the local filesystem has been implemented. Using mxRun() with "checkpoint=TRUE" will save a file with the name [modelname].omx to the current working directory every 10 minutes. Use mxOption() to customize some of the behaviors of the checkpoint file (see ?mxOption or the demo "SimpleCheckpoint").
When specifying a RAM model with an observed means vector, the expected means vector will no longer be automatically generated. See the following thread for a discussion on this new behavior.
In the upcoming weeks the developers will be working on optimizing the performance of the current feature set.
Change log:
Release 0.3.2-1263 (May 22, 2010)
- added 'newlabels' argument to omxSetParameters() function
- now throwing errors to the user when detected from the backend in mxRun()
- checkpointing mechanism implemented - mxRun(model, checkpoint = TRUE)
- never computing confidence intervals for matrix cells where free = FALSE (all
bets are off on algebras) - added mxOption(model, "CI Max Iterations", value)
- added documentation for mxRestore() function
- default expected means vectors are no longer generated