#
#   Copyright 2007-2017 The OpenMx Project
#
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# 
#        http://www.apache.org/licenses/LICENSE-2.0
# 
#   Unless required by applicable law or agreed to in writing, software
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# -----------------------------------------------------------------------------
# Program: MatrixAlgebra.R  
# Author: Hermine Maes
# Date: 2009.08.01 
#
# ModelType: Algebra
# DataType: Ordinal
# Field: None
#
# Purpose:
#      Matrix Algebra in OpenMx: Basic matrix algebra operations
#
# RevisionHistory:
#      Hermine Maes -- 2009.10.08 updated & reformatted
#      Ross Gore -- 2011.06.15 added Model, Data and Field metadata
# -----------------------------------------------------------------------------

#options(error = utils::recover)
require(OpenMx)
# Load Library
# -----------------------------------------------------------------------------

algebraExercises <- mxModel(
	mxMatrix(
    	type="Full", 
    	nrow=3, 
    	ncol=1, 
    	values=c(1,2,3), 
    	name='A'
	),
	mxMatrix(
    	type="Full", 
    	nrow=3, 
    	ncol=1, 
    	values=c(1,2,3), 
    	name='B'
	),
	mxAlgebra(
    	A + B, 
    	name='q1'		# addition
	),
	mxAlgebra(
    	A * A, 
    	name='q2'		# dot multiplication
	),
	mxAlgebra(
	    t(A), 
	    name='q3'		# transpose
	),
    mxAlgebra(
        A %*% t(A), 
        name='q4'		# inner product
    ),
    mxAlgebra(
        t(A) %*% A, 
        name='q5'		# outer product
    )
)
# Specify Model Matrices and Algebra
# -----------------------------------------------------------------------------


answers <- mxRun(algebraExercises)
answers$algebras

result <- mxEval(list(q1,q2,q3,q4,q5),answers)	
# Run Model and Generate Output
# -----------------------------------------------------------------------------
