#
#   Copyright 2007-2018 by the individuals mentioned in the source code history
#
#   Licensed under the Apache License, Version 2.0 (the "License");
#   you may not use this file except in compliance with the License.
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# 
#        http://www.apache.org/licenses/LICENSE-2.0
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library(OpenMx)

#mxOption(NULL, "Default optimizer", "NPSOL")

# Constrain matrix 'K' to be equal to matrix 'limit'
model <- mxModel(model="con_test",
                 mxMatrix(type="Full", nrow=2, ncol=2, free=TRUE, name="K"),
                 mxMatrix(type="Full", nrow=2, ncol=2, free=FALSE, name="limit", values=1:4),
                 mxConstraint(K == limit, name = "Klimit_equality"),
                 mxAlgebra(min(K), name="minK"),
                 mxFitFunctionAlgebra("minK")
)

fit <- mxRun(model)

omxCheckCloseEnough(fit$output$fit, 1, 1e-4)
omxCheckCloseEnough(c(fit$matrices$K$values), 1:4, 1e-3)
