A more stable beta release of the OpenMx 1.1 series is available for download. Use the alternate installation command in an R terminal source("https://openmx.ssri.psu.edu/getNewOpenMx.R")
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For more information on OpenMx 1.1 please see our original announcement .
Below is the full changelog since the OpenMx 1.0.0 release. We have made numerous small improvements and bug fixes.
Improved Beta Release 999.0.0-1690 (June 27, 2011)
- added omxSelectRowsAndCols, omxSelectRows and omxSelectCols documentation
- fixed model flattening to keep track of confidence intervals in submodels
- fixed a bug in omxParallelCI() introduced by previous change
- added verifyCorrelationMatrix to mxData. See https://openmx.ssri.psu.edu/issue/2011/06/error-checking-correlation-matrices
- added error checking for dimnames on MxMatrix and MxAlgebra objects
- reformated comments and heading style for all demos
- fixed segmentation fault on backend error condition
Beta Release 999.0.0-1661 (May 20, 2011)
- turn off jiggling of free parameters with starting values of 0.0 when useOptimizer=FALSE
- allow non-RAM objective functions in RAM model
- change model type names to 'default' and 'RAM'
- no longer explicitly transforming RAM + raw data models into FIML models
- fixed bug in MxMatrix indexing operator
Pre-Release 999.0.0-1609 (April 7, 2011)
- added argument 'threshnames' to mxFIMLObjective()
- eliminated "initialize" method for MxMatrix objects
- added "omxCreateMatrix" method for MxMatrix objects
- renaming majority of omx* functions to imx* functions. See https://openmx.ssri.psu.edu/thread/761
- added error checking to mxOption() function
- added "Optimality tolerance" to mxOption() selection
- added 'lbound' and 'ubound' columns to summary() output of free parameters
- added asterisks to the 'lbound' and 'ubound' columns when feasibility tolerance is met
- added "omxNot" function to the set of available mxAlgebra() function
- added "omxSelectRows", "omxSelectCols", and "omxSelectRowsAndCols" as mxAlgebra operators()
- updated interface of mxRowObjective
- in ML objective: expected covariance matrix and observed covariance matrix must have identical dimnames
- in RAM and ML objectives: the observed means vector must have column names
- added "mean" function to the set of available mxAlgebra() functions
- added slots "expCov" and "expMean" to the MxRAMObjective function
- added useOptimizer option to mxRun.
- added error checking in frontend and backend for non-positive-definite observed covariance matrices
- added "omxGreaterThan", "omxLessThan", "omxApproxEquals", "omxAnd", and "omxOr" operators to the set of mxAlgebra() operators
- error checking for model[[1]] or model[[TRUE]]
- error checking in the front-end whether more than 20 ordinal columns are present in a data set
- improved performance in the front-end in mxModel() for adding paths to RAM models
- print name of algebra when operator has too few or too many arguments
Pre-Release 999.0.0-1527 (January 6, 2011)
- added mxErrorPool() function and R documentation.
- added Apache license information to all R documentation files.
- new implementation of mxEval().
- new argument 'defvar.row' to mxEval(). See ?mxEval.
- handling definition variables for (I - A) ^ - 1 speedup
- handling square bracket labels for (I - A) ^ - 1 speedup
- added argument 'free' to omxGetParameters. See ?omxGetParameters.
- added argument 'strict' to omxSetParameters. See ?omxSetParameters.
- eliminated warnings for confidence interval optimization codes
- added "..." argument to mxRObjectiveFunction()
- added 'excludeself' argument to mxPath() function
- fix memory leak in RAM objective function
- removed dependency to MBESS library in R documentation
- added more descriptive error message when thresholds are not sorted
- incorporated NaN unsafe matrix-matrix multiplication (dgemm) from R <= 2.11.1
- incorporated NaN unsafe matrix-vector multiplication (dgemv) from R <= 2.11.1
- return NA in mxVersion() if "OpenMx" cannot be found
- fix infinite loop in objective function transformations
- added initialization to load OpenMx on swift workers
- implemented omxParallelCI() to calculate confidence intervals in parallel
- only calculating CIs for upper triangle of symmetric matrices
- cleanup appearance of transient MxMatrix objects in error messages
- fix bug with very large number of omxUntitledName() objects
- added optional argument CPUS=n to "make test" target
- change snowfall interface to use sfClusterApplyLB()
- storing raw data in row-major order, and copying contiguous data rows
- fix bug in mxModel() when using remove = TRUE