I am just starting out in OpenMx and am trying to run the demonstration script UnivariateTwinSaturated_MatrixRawCon.R I get the error messages below.
Can anybody help?
Thankyou
Karin
> # Fit Model with Equal Means & Variances across Twin Order and Zygosity
> # -----------------------------------------------------------------------
> # Constrain expected means and variances to be equal across twin order
> equateMeansVarsTwinModel <- mxModel(univTwinSatFit, name="equateMeansVarsTwin",
+ mxConstraint( alg1="MZ.expVarMZt1", "=", alg2="MZ.expVarMZt2", name="VarMZt1ist2"),
+ mxConstraint( alg1="DZ.expVarDZt1", "=", alg2="DZ.expVarDZt2", name="VarDZt1ist2"),
+ mxConstraint( alg1="MZ.expMeanMZt1", "=", alg2="MZ.expMeanMZt2", name="MeanMZt1ist2"),
+ mxConstraint( alg1="DZ.expMeanDZt1", "=", alg2="DZ.expMeanDZt2", name="MeanDZt1ist2")
+ )
Error in mxConstraint(alg1 = "MZ.expVarMZt1", "=", alg2 = "MZ.expVarMZt2", :
unused argument(s) (alg1 = "MZ.expVarMZt1", alg2 = "MZ.expVarMZt2")
> equateMeansVarsTwinFit <- mxRun(equateMeansVarsTwinModel)
Error in cat("Running", model@name, "\n") :
object 'equateMeansVarsTwinModel' not found
> equateMeansVarsTwinSumm <- summary(equateMeansVarsTwinFit)
Error in summary(equateMeansVarsTwinFit) :
error in evaluating the argument 'object' in selecting a method for function 'summary': Error: object 'equateMeansVarsTwinFit' not found
> equateMeansVarsTwinSumm
Error: object 'equateMeansVarsTwinSumm' not found
> parameterSpecifications(equateMeansVarsTwinFit)
Error in .collectParameterSpecifications(model) :
object 'equateMeansVarsTwinFit' not found
> expectedMeansCovariances(equateMeansVarsTwinFit)
Error in .collectExpectedMeansCovariances(model, model) :
object 'equateMeansVarsTwinFit' not found
> tableFitStatistics(univTwinSatFit, equateMeansVarsTwinFit)
Error in .showFitStatistics(reference, compare) :
object 'equateMeansVarsTwinFit' not found
>
> # Constrain expected means and variances to be equal across twin order and zygosity
> equateMeansVarsTwinZygModel <- mxModel(equateMeansVarsTwinFit, name="equateMeansVarsTwinZyg",
+ mxConstraint( alg1="MZ.expVarMZt1", "=", alg2="DZ.expVarDZt1", name="VarMZisDZ"),
+ mxConstraint( alg1="MZ.expMeanMZt1", "=", alg2="DZ.expMeanDZt1", name="MeanMZisDZ")
+ )
Error in is(model, "MxModel") : object 'equateMeansVarsTwinFit' not found
> equateMeansVarsTwinZygFit <- mxRun(equateMeansVarsTwinZygModel)
Error in cat("Running", model@name, "\n") :
object 'equateMeansVarsTwinZygModel' not found
> equateMeansVarsTwinZygSumm <- summary(equateMeansVarsTwinZygFit)
Error in summary(equateMeansVarsTwinZygFit) :
error in evaluating the argument 'object' in selecting a method for function 'summary': Error: object 'equateMeansVarsTwinZygFit' not found
> equateMeansVarsTwinZygSumm
Error: object 'equateMeansVarsTwinZygSumm' not found
> parameterSpecifications(equateMeansVarsTwinZygFit)
Error in .collectParameterSpecifications(model) :
object 'equateMeansVarsTwinZygFit' not found
> expectedMeansCovariances(equateMeansVarsTwinZygFit)
Error in .collectExpectedMeansCovariances(model, model) :
object 'equateMeansVarsTwinZygFit' not found
> tableFitStatistics(univTwinSatFit, list(equateMeansVarsTwinFit, equateMeansVarsTwinZygFit))
Error in .showFitStatistics(reference, compare) :
object 'equateMeansVarsTwinFit' not found