1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
|
#
# Copyright 2007-2020 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.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#------------------------------------------------------------------------------
# Author: Michael D. Hunter
# Date: 2014-12-05
# Filename: LisrelTypeCheck.R
# Purpose: Check functionality of the LISREL type while implementing pieces of
# it. Currently, the only working function is to create an MxModel with
# the correct zero matrices, having accurately processed the manifestVars and
# latentVars arguments.
#------------------------------------------------------------------------------
# The next TODO item is to start implementing removeEntriesLISREL in the
# MxLISRELModel.R file.
#------------------------------------------------------------------------------
# load needed package(s)
library(OpenMx)
library(testthat)
#------------------------------------------------------------------------------
mod1 <- mxModel(name="A type LISREL model",
manifestVars=list(exogenous='x1', endogenous='y1'),
latentVars=list(exogenous='ksi1', endogenous='eta1'),
type="LISREL"
)
# make sure partial matching works
mod2 <- mxModel(name="partial matching LISREL model",
manifestVars=list(exo='x1', end='y1'),
latentVars=list(exo='ksi1', end='eta1'),
type="LISREL"
)
# exogenous only
mod3 <- mxModel(name="exogenous only LISREL model",
manifestVars=list(exo='x1'),
latentVars=list(exo='ksi1'),
type="LISREL"
)
# endogenous only
mod4 <- mxModel(name="endogenous LISREL model",
manifestVars='y1',
latentVars='eta1',
type="LISREL"
)
expect_equal(dimnames(mod4$LY), list("y1","eta1"))
#------------------------------------------------------------------------------
# Now try adding entries
data(demoTwoFactor)
# data
mod1a <- mxModel(name="A type LISREL model",
manifestVars=list(exo=names(demoTwoFactor)[1:5], endo=names(demoTwoFactor)[6:10]),
latentVars=list(exogenous='ksi1', endogenous='eta1'),
type="LISREL",
mxData(demoTwoFactor, 'raw')
)
# means
mod1b <- mxModel(name="A type LISREL model",
manifestVars=list(exo=names(demoTwoFactor)[1:5], endo=names(demoTwoFactor)[6:10]),
latentVars=list(exogenous='ksi1', endogenous='eta1'),
type="LISREL",
mxData(demoTwoFactor, 'raw'),
mxPath(from="one", to='x1', values=1, free=TRUE),
mxPath(from="one", to='y3', values=3, free=TRUE),
mxPath(from="one", to=c('x2', 'y2'), values=2, free=TRUE, labels='TwoValue'),
mxPath(from="one", to=c("ksi1", "eta1"), values=7, free=FALSE)
)
# latent exo paths
mod1c <- mxModel(name="A type LISREL model",
manifestVars=list(exo=names(demoTwoFactor)[1:5], endo=names(demoTwoFactor)[6:10]),
latentVars=list(exogenous='ksi1', endogenous='eta1'),
type="LISREL",
mxData(demoTwoFactor, 'raw'),
mxPath(from='ksi1', to='x1', values=1, free=TRUE, labels='load1'), #LX
mxPath(from='ksi1', to='eta1', values=2, free=TRUE, labels='reg1', ubound=20), #GA
mxPath(from='ksi1', arrow=2, values=3, free=FALSE, labels='lvar1') #PH
)
# latent endo paths
mod1d <- mxModel(name="A type LISREL model",
manifestVars=list(exo=names(demoTwoFactor)[1:5], endo=names(demoTwoFactor)[6:10]),
latentVars=list(exogenous='ksi1', endogenous='eta1'),
type="LISREL",
mxData(demoTwoFactor, 'raw'),
mxPath(from='eta1', to='y1', values=1, free=TRUE, labels='load1'), #LY
mxPath(from='eta1', arrow=2, values=3, free=FALSE, labels='lvar1'), #PS
mxPath(from='eta1', arrow=1, values=3, free=FALSE, labels='lvar1') #BE, N.B. bc 1 dimensional, BE path overwrites PS path.
)
# manifest exo paths
mod1e <- mxModel(name="A type LISREL model",
manifestVars=list(exo=names(demoTwoFactor)[1:5], endo=names(demoTwoFactor)[6:10]),
latentVars=list(exogenous='ksi1', endogenous='eta1'),
type="LISREL",
mxData(demoTwoFactor, 'raw'),
mxPath(from='x1', to='x1', values=1, arrows=2, free=TRUE, labels='resid1'), #TD
mxPath(from='x1', to='y3', values=2, arrows=2, free=TRUE, labels='residX1') #TH
)
# manifest endo paths
mod1f <- mxModel(name="A type LISREL model",
manifestVars=list(exo=names(demoTwoFactor)[1:5], endo=names(demoTwoFactor)[6:9]),
latentVars=list(exogenous='ksi1', endogenous='eta1'),
type="LISREL",
mxData(demoTwoFactor, 'raw'),
mxPath(from='y4', to='y2', values=1, arrows=2, free=TRUE, labels='residC3'), #TE
mxPath(from='y2', to='x5', values=2, arrows=2, free=TRUE, labels='residX2') #TH
)
TE <- list(
labels=matrix(as.character(NA), 4, 4),
values=matrix(0, 4, 4),
free=matrix(FALSE, 4, 4))
TE$labels[4, 2] <- 'residC3'
TE$labels[2, 4] <- 'residC3'
TE$values[4, 2] <- 1
TE$values[2, 4] <- 1
TE$free[4, 2] <- TRUE
TE$free[2, 4] <- TRUE
omxCheckTrue(all.equal(mod1f$TE$labels, TE$labels, check.attributes=FALSE))
omxCheckTrue(all.equal(mod1f$TE$values, TE$values, check.attributes=FALSE))
omxCheckTrue(all.equal(mod1f$TE$free, TE$free, check.attributes=FALSE))
TH <- list(
labels=matrix(as.character(NA), 4, 5),
values=matrix(0, 4, 5),
free=matrix(FALSE, 4, 5))
TH$labels[2, 5] <- 'residX2'
TH$values[2, 5] <- 2
TH$free[2, 5] <- TRUE
omxCheckTrue(all.equal(mod1f$TH$labels, TH$labels, check.attributes=FALSE))
omxCheckTrue(all.equal(mod1f$TH$values, TH$values, check.attributes=FALSE))
omxCheckTrue(all.equal(mod1f$TH$free, TH$free, check.attributes=FALSE))
# manifest endo paths, opposite direction
mod1g <- mxModel(name="A type LISREL model",
manifestVars=list(exo=names(demoTwoFactor)[1:5], endo=names(demoTwoFactor)[6:9]),
latentVars=list(exogenous='ksi1', endogenous='eta1'),
type="LISREL",
mxData(demoTwoFactor, 'raw'),
mxPath(from='y4', to='y2', values=1, arrows=2, free=TRUE, labels='residC3'), #TE
mxPath(from='x5', to='y2', values=2, arrows=2, free=TRUE, labels='residX2') #TH
)
omxCheckTrue(all.equal(mod1g$TH$labels, TH$labels, check.attributes=FALSE))
omxCheckTrue(all.equal(mod1g$TH$values, TH$values, check.attributes=FALSE))
omxCheckTrue(all.equal(mod1g$TH$free, TH$free, check.attributes=FALSE))
#------------------------------------------------------------------------------
|
