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# lavaanList: fit the *same* model, on different datasets
# YR - 29 Jun 2016
# YR - 27 Jan 2017: change lavoptions; add dotdotdot to each call
# TDJ - 23 Aug 2018: change wrappers to preserve arguments from match.call()
lavaanList <- function(model = NULL, # model
dataList = NULL, # list of datasets
dataFunction = NULL, # generating function
dataFunction.args = list(), # optional arguments
ndat = length(dataList), # how many datasets?
cmd = "lavaan",
...,
store.slots = c("partable"), # default is partable
FUN = NULL, # arbitrary FUN
show.progress = FALSE,
store.failed = FALSE,
parallel = c("no", "multicore", "snow"),
ncpus = max(1L, parallel::detectCores() - 1L),
cl = NULL,
iseed = NULL) {
# store.slots call
mc <- match.call()
# check store.slots
store.slots <- tolower(store.slots)
if (length(store.slots) == 1L && store.slots == "all") {
store.slots <- c(
"timing", "partable", "data", "samplestats",
"cache", "loglik", "h1", "baseline", "external",
"vcov", "test", "optim", "implied"
)
}
# dataList or function?
if (is.function(dataFunction)) {
if (ndat == 0L) {
lav_msg_stop(gettext("please specify number of requested datasets (ndat)"))
}
firstData <- do.call(dataFunction, args = dataFunction.args)
# dataList <- vector("list", length = ndat)
} else {
firstData <- dataList[[1]]
}
# check data
if (is.matrix(firstData)) {
# check if we have column names?
NAMES <- colnames(firstData)
if (is.null(NAMES)) {
lav_msg_stop(gettext("data is a matrix without column names"))
}
} else if (inherits(firstData, "data.frame")) {
# check?
} else {
lav_msg_stop(gettext("(generated) data is not a data.frame (or a matrix)"))
}
# parallel (see boot package)
if (missing(parallel)) {
# parallel <- getOption("boot.parallel", "no")
parallel <- "no"
}
parallel <- match.arg(parallel)
have_mc <- have_snow <- FALSE
if (parallel != "no" && ncpus > 1L) {
if (parallel == "multicore") {
have_mc <- .Platform$OS.type != "windows"
} else if (parallel == "snow") {
have_snow <- TRUE
}
if (!have_mc && !have_snow) {
ncpus <- 1L
}
loadNamespace("parallel")
}
# dot dot dot
dotdotdot <- list(...)
# if 'model' is a lavaan object (perhaps from lavSimulate), no need to
# call `cmd'
if (inherits(model, "lavaan")) {
FIT <- model
} else {
# adapt for FIT
# dotdotdotFIT <- dotdotdot
# dotdotdotFIT$do.fit <- TRUE # to get starting values
# dotdotdotFIT$se <- "none"
# dotdotdotFIT$test <- "none"
# initial model fit, using first dataset
FIT <- do.call(cmd,
args = c(list(
model = model,
data = firstData
), dotdotdot)
)
}
lavoptions <- FIT@Options
lavmodel <- FIT@Model
lavpartable <- FIT@ParTable
lavpta <- FIT@pta
# remove any options in lavoptions from dotdotdot
if (length(dotdotdot) > 0L) {
rm.idx <- which(names(dotdotdot) %in% names(lavoptions))
if (length(rm.idx) > 0L) {
dotdotdot <- dotdotdot[-rm.idx]
}
}
# remove start/est/se columns from lavpartable
lavpartable$start <- lavpartable$est <- lavpartable$se <- NULL
# empty slots
timingList <- ParTableList <- DataList <- SampleStatsList <-
CacheList <- vcovList <- testList <- optimList <-
h1List <- loglikList <- baselineList <-
impliedList <- funList <- list()
# prepare store.slotsd slots
if ("timing" %in% store.slots) {
timingList <- vector("list", length = ndat)
}
if ("partable" %in% store.slots) {
ParTableList <- vector("list", length = ndat)
}
if ("data" %in% store.slots) {
DataList <- vector("list", length = ndat)
}
if ("samplestats" %in% store.slots) {
SampleStatsList <- vector("list", length = ndat)
}
if ("cache" %in% store.slots) {
CacheList <- vector("list", length = ndat)
}
if ("vcov" %in% store.slots) {
vcovList <- vector("list", length = ndat)
}
if ("test" %in% store.slots) {
testList <- vector("list", length = ndat)
}
if ("optim" %in% store.slots) {
optimList <- vector("list", length = ndat)
}
if ("implied" %in% store.slots) {
impliedList <- vector("list", length = ndat)
}
if ("loglik" %in% store.slots) {
loglikList <- vector("list", length = ndat)
}
if ("h1" %in% store.slots) {
h1List <- vector("list", length = ndat)
}
if ("baseline" %in% store.slots) {
baselineList <- vector("list", length = ndat)
}
if (!is.null(FUN)) {
funList <- vector("list", length = ndat)
}
# single run
fn <- function(i) {
if (show.progress) {
cat(" ... data set number:", sprintf("%4d", i))
}
# get new dataset
if (i == 1L) {
DATA <- firstData
} else if (is.function(dataFunction)) {
DATA <- do.call(dataFunction, args = dataFunction.args)
} else if (is.list(dataList)) {
DATA <- dataList[[i]]
}
# if categorical, check if we have enough response categories
# for each ordered variables in DATA
data.ok.flag <- TRUE
if (FIT@Model@categorical) {
# expected nlev
ord.idx <- unique(unlist(FIT@pta$vidx$ov.ord))
NLEV.exp <- FIT@Data@ov$nlev[ord.idx]
# observed nlev
NLEV.obs <- sapply(
DATA[, unique(unlist(FIT@pta$vnames$ov.ord)),
drop = FALSE
],
function(x) length(unique(na.omit(x)))
)
wrong.idx <- which(NLEV.exp - NLEV.obs != 0)
if (length(wrong.idx) > 0L) {
data.ok.flag <- FALSE
}
}
# adapt lavmodel for this new dataset
# - starting values will be different
# - ov.x variances/covariances
# FIXME: can we not make the changes internally?
# if(lavmodel@fixed.x && length(vnames(lavpartable, "ov.x")) > 0L) {
# for(g in 1:FIT@Data@ngroups) {
#
# }
lavmodel <- NULL
# }
# fit model with this (new) dataset
if (data.ok.flag) {
if (cmd %in% c("lavaan", "sem", "cfa", "growth")) {
# lavoptions$start <- FIT # FIXME: needed?
lavobject <- try(
do.call("lavaan",
args = c(
list(
slotOptions = lavoptions,
slotParTable = lavpartable,
slotModel = lavmodel,
# start = FIT,
data = DATA
),
dotdotdot
)
),
silent = TRUE
)
} else if (cmd == "fsr") {
# extract fs.method and fsr.method from dotdotdot
if (!is.null(dotdotdot$fs.method)) {
fs.method <- dotdotdot$fs.method
} else {
fs.method <- formals(fsr)$fs.method # default
}
if (!is.null(dotdotdot$fsr.method)) {
fsr.method <- dotdotdot$fsr.method
} else {
fsr.method <- formals(fsr)$fsr.method # default
}
lavoptions$start <- FIT # FIXME: needed?
lavobject <- try(
do.call("fsr",
args = c(
list(
slotOptions = lavoptions,
slotParTable = lavpartable,
slotModel = lavmodel,
# start = FIT,
data = DATA,
cmd = "lavaan",
fs.method = fs.method,
fsr.method = fsr.method
),
dotdotdot
)
),
silent = TRUE
)
} else {
lav_msg_stop(gettext("unknown cmd:"), cmd)
}
} # data.ok.flag
RES <- list(
ok = FALSE, timing = NULL, ParTable = NULL,
Data = NULL, SampleStats = NULL, vcov = NULL,
test = NULL, optim = NULL, implied = NULL,
baseline = NULL, baseline.ok = FALSE, fun = NULL
)
if (data.ok.flag && inherits(lavobject, "lavaan") &&
lavInspect(lavobject, "converged")) {
RES$ok <- TRUE
if (show.progress) {
cat(
" OK -- niter = ",
sprintf("%3d", lavInspect(lavobject, "iterations")),
"\n"
)
}
# extract slots from fit
if ("timing" %in% store.slots) {
RES$timing <- lavobject@timing
}
if ("partable" %in% store.slots) {
RES$ParTable <- lavobject@ParTable
}
if ("data" %in% store.slots) {
RES$Data <- lavobject@Data
}
if ("samplestats" %in% store.slots) {
RES$SampleStats <- lavobject@SampleStats
}
if ("cache" %in% store.slots) {
RES$Cache <- lavobject@Cache
}
if ("vcov" %in% store.slots) {
RES$vcov <- lavobject@vcov
}
if ("test" %in% store.slots) {
RES$test <- lavobject@test
}
if ("optim" %in% store.slots) {
RES$optim <- lavobject@optim
}
if ("implied" %in% store.slots) {
RES$implied <- lavobject@implied
}
if ("loglik" %in% store.slots) {
RES$loglik <- lavobject@loglik
}
if ("h1" %in% store.slots) {
RES$h1 <- lavobject@h1
}
if ("baseline" %in% store.slots) {
RES$baseline <- lavobject@baseline
if (length(lavobject@baseline) > 0L) {
RES$baseline.ok <- TRUE
}
}
# custom FUN
if (!is.null(FUN)) {
RES$fun <- FUN(lavobject)
}
} else { # failed!
if (show.progress) {
if (data.ok.flag) {
if (inherits(lavobject, "lavaan")) {
cat(" FAILED: no convergence\n")
} else {
cat(" FAILED: could not construct lavobject\n")
print(lavobject)
}
} else {
cat(" FAILED: nlev too low for some vars\n")
}
}
if ("partable" %in% store.slots) {
RES$ParTable <- lavpartable
RES$ParTable$est <- RES$ParTable$start
RES$ParTable$est[RES$ParTable$free > 0] <- as.numeric(NA)
RES$ParTable$se <- numeric(length(lavpartable$lhs))
RES$ParTable$se[RES$ParTable$free > 0] <- as.numeric(NA)
}
if (store.failed) {
tmpfile <- tempfile(pattern = "lavaanListData")
datfile <- paste0(tmpfile, ".csv")
write.csv(DATA, file = datfile, row.names = FALSE)
if (data.ok.flag) {
# or only if lavobject is of class lavaan?
objfile <- paste0(tmpfile, ".RData")
write(lavobject, file = objfile)
}
}
}
RES
}
# the next 20 lines are based on the boot package
RES <- if (ncpus > 1L && (have_mc || have_snow)) {
if (have_mc) {
parallel::mclapply(seq_len(ndat), fn, mc.cores = ncpus)
} else if (have_snow) {
list(...) # evaluate any promises
if (is.null(cl)) {
cl <- parallel::makePSOCKcluster(rep("localhost", ncpus))
if (RNGkind()[1L] == "L'Ecuyer-CMRG") {
parallel::clusterSetRNGStream(cl, iseed = iseed)
}
RES <- parallel::parLapply(cl, seq_len(ndat), fn)
parallel::stopCluster(cl)
RES
} else {
parallel::parLapply(cl, seq_len(ndat), fn)
}
}
} else {
lapply(seq_len(ndat), fn)
}
# restructure
if ("baseline" %in% store.slots) {
meta <- list(
ndat = ndat, ok = sapply(RES, "[[", "ok"),
baseline.ok = sapply(RES, "[[", "baseline.ok"),
store.slots = store.slots
)
} else {
meta <- list(
ndat = ndat, ok = sapply(RES, "[[", "ok"),
store.slots = store.slots
)
}
# extract store.slots slots
if ("timing" %in% store.slots) {
timingList <- lapply(RES, "[[", "timing")
}
if ("partable" %in% store.slots) {
ParTableList <- lapply(RES, "[[", "ParTable")
}
if ("data" %in% store.slots) {
DataList <- lapply(RES, "[[", "Data")
}
if ("samplestats" %in% store.slots) {
SampleStatsList <- lapply(RES, "[[", "SampleStats")
}
if ("cache" %in% store.slots) {
CacheList <- lapply(RES, "[[", "Cache")
}
if ("vcov" %in% store.slots) {
vcovList <- lapply(RES, "[[", "vcov")
}
if ("test" %in% store.slots) {
testList <- lapply(RES, "[[", "test")
}
if ("optim" %in% store.slots) {
optimList <- lapply(RES, "[[", "optim")
}
if ("implied" %in% store.slots) {
impliedList <- lapply(RES, "[[", "implied")
}
if ("h1" %in% store.slots) {
h1List <- lapply(RES, "[[", "h1")
}
if ("loglik" %in% store.slots) {
loglikList <- lapply(RES, "[[", "loglik")
}
if ("baseline" %in% store.slots) {
baselineList <- lapply(RES, "[[", "baseline")
}
if (!is.null(FUN)) {
funList <- lapply(RES, "[[", "fun")
}
# create lavaanList object
lavaanList <- new("lavaanList",
version = packageDescription("lavaan", fields = "Version"),
call = mc,
Options = lavoptions,
ParTable = lavpartable,
pta = lavpta,
Model = lavmodel,
Data = FIT@Data,
# meta
meta = meta,
# per dataset
timingList = timingList,
ParTableList = ParTableList,
DataList = DataList,
SampleStatsList = SampleStatsList,
CacheList = CacheList,
vcovList = vcovList,
testList = testList,
optimList = optimList,
impliedList = impliedList,
h1List = h1List,
loglikList = loglikList,
baselineList = baselineList,
funList = funList,
external = list()
)
lavaanList
}
semList <- function(model = NULL,
dataList = NULL,
dataFunction = NULL,
dataFunction.args = list(),
ndat = length(dataList),
...,
store.slots = c("partable"),
FUN = NULL,
show.progress = FALSE,
store.failed = FALSE,
parallel = c("no", "multicore", "snow"),
ncpus = max(1L, parallel::detectCores() - 1L),
cl = NULL,
iseed = NULL) {
mc <- match.call(expand.dots = TRUE)
mc$cmd <- "sem"
mc[[1L]] <- quote(lavaan::lavaanList)
eval(mc, parent.frame())
}
cfaList <- function(model = NULL,
dataList = NULL,
dataFunction = NULL,
dataFunction.args = list(),
ndat = length(dataList),
...,
store.slots = c("partable"),
FUN = NULL,
show.progress = FALSE,
store.failed = FALSE,
parallel = c("no", "multicore", "snow"),
ncpus = max(1L, parallel::detectCores() - 1L),
cl = NULL,
iseed = NULL) {
mc <- match.call(expand.dots = TRUE)
mc$cmd <- "cfa"
mc[[1L]] <- quote(lavaan::lavaanList)
eval(mc, parent.frame())
}
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