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#
# 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.
# 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.
setClass(Class = "MxBounds",
representation = representation(
min = "numeric",
max = "numeric",
parameters = "character"
))
setMethod("initialize", "MxBounds",
function(.Object, min, max, parameters) {
.Object@min <- min
.Object@max <- max
.Object@parameters <- parameters
return(.Object)
}
)
mxBounds <- function(parameters, min = NA, max = NA) {
if (length(min) > 1) {
stop("Only a single min value may be specified")
}
if (length(max) > 1) {
stop("Only a single max value may be specified")
}
if(is.na(min)) min <- NA_real_
if(is.na(max)) max <- NA_real_
if (missing(min) || !is.numeric(min)) {
stop(paste("Min argument is not a numeric",
"(the value of the lower bound)"))
}
if (missing(max) || !is.numeric(max)) {
stop(paste("Max argument is not a numeric",
"(the value of the upper bound)"))
}
if (missing(parameters) ||
typeof(parameters) != "character") {
stop(paste("Parameters argument is not a string",
"(the vector of free parameter names)"))
}
if (!is.na(min) && !is.na(max) && min > max) {
msg <- paste("min argument is greater than",
"max argument")
stop(msg)
}
return(new("MxBounds", min, max, parameters))
}
checkBounds <- function(model, bounds) {
parameters <- omxGetParameters(model)
parameters <- names(parameters)
for(i in 1:length(bounds)) {
bound <- bounds[[i]]
nomatch <- !(bound@parameters %in% parameters)
if (any(nomatch)) {
stop(paste("In model ", omxQuotes(model@name),
" the following parameter names are",
" used in mxBounds() but do",
" not exist in the model: ",
omxQuotes(bound@parameters[nomatch]), '.',
sep = ''), call. = FALSE)
}
}
}
modelAddBounds <- function(model, bounds) {
if (length(bounds) == 0) {
return(model)
}
checkBounds(model, bounds)
return(modelAddBoundsHelper(model, bounds))
}
modelAddBoundsHelper <- function(model, bounds) {
if (length(model@matrices) > 0) {
for(i in 1:length(bounds)) {
for(j in 1:length(model@matrices)) {
matrix <- model@matrices[[j]]
matches <- matrix$labels %in% bounds[[i]]@parameters
if (any(matches)) {
matrix$lbound[matches] <- bounds[[i]]@min
matrix$ubound[matches] <- bounds[[i]]@max
model@matrices[[j]] <- matrix
}
}
}
}
if (length(model@submodels) > 0) {
for(i in 1:length(model@submodels)) {
model@submodels[[i]] <- modelAddBoundsHelper(model@submodels[[i]], bounds)
}
}
return(model)
}
modelRemoveBounds <- function(model, bounds) {
if (length(bounds) == 0) {
return(model)
}
if (length(model@matrices) > 0) {
for(i in 1:length(bounds)) {
for(j in 1:length(model@matrices)) {
matrix <- model@matrices[[j]]
matches <- matrix@labels %in% bounds[[i]]@parameters
matrix@lbound[matches] <- as.numeric(NA)
matrix@ubound[matches] <- as.numeric(NA)
model@matrices[[j]] <- matrix
}
}
}
if (length(model@submodels) > 0) {
for(i in 1:length(model@submodels)) {
model@submodels[[i]] <- modelRemoveBounds(model@submodels[[i]], bounds)
}
}
return(model)
}
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