Nothing
mice.mids <- function(obj, maxit = 1, printFlag = TRUE, ...) {
if (!is.mids(obj))
stop("Object should be of type mids.")
if (maxit < 1)
return(obj)
loggedEvents <- obj$loggedEvents
state <- list(it = 0, im = 0, co = 0, dep = "", meth = "",
log = !is.null(loggedEvents))
if (is.null(loggedEvents))
loggedEvents <- data.frame(it = 0, im = 0, co = 0, dep = "",
meth = "", out = "")
# Initialize local variables
call <- match.call()
imp <- obj$imp
where <- obj$where
if (is.null(where)) where <- is.na(obj$data)
blocks <- obj$blocks
if (is.null(blocks)) blocks <- make.blocks(obj$data)
assign(".Random.seed", obj$lastSeedValue, pos = 1)
## OK. Iterate.
sumIt <- obj$iteration + maxit
from <- obj$iteration + 1
to <- from + maxit - 1
q <- sampler(obj$data, obj$m, where, imp, blocks, obj$method,
obj$visitSequence, obj$predictorMatrix,
obj$formulas, obj$blots, obj$post, c(from, to), printFlag, ...)
imp <- q$imp
## combine with previous chainMean and chainVar
vnames <- unique(unlist(obj$blocks))
nvis <- length(vnames)
if (!is.null(obj$chainMean)) {
chainMean <- chainVar <- array(0, dim = c(nvis, to, obj$m),
dimnames = list(vnames,
seq_len(to), paste("Chain", seq_len(obj$m))))
for (j in seq_len(nvis)) {
if (obj$iteration == 0) {
chainMean[j, , ] <- q$chainMean[j, , ]
chainVar[j, , ] <- q$chainVar[j, , ]
} else {
chainMean[j, seq_len(obj$iteration), ] <- obj$chainMean[j, , ]
chainVar[j, seq_len(obj$iteration), ] <- obj$chainVar[j, , ]
chainMean[j, from:to, ] <- q$chainMean[j, , ]
chainVar[j, from:to, ] <- q$chainVar[j, , ]
}
}
} else {
chainMean <- chainVar <- NULL
}
if (!state$log)
loggedEvents <- NULL
if (state$log)
row.names(loggedEvents) <- seq_len(nrow(loggedEvents))
## save, and return
midsobj <- list(data = obj$data, imp = imp, m = obj$m,
where = where, blocks = obj$blocks,
call = call, nmis = obj$nmis,
method = obj$method,
predictorMatrix = obj$predictorMatrix,
visitSequence = obj$visitSequence,
formulas = obj$formulas, post = obj$post,
blots = obj$blots,
seed = obj$seed,
iteration = sumIt,
lastSeedValue = .Random.seed,
chainMean = chainMean,
chainVar = chainVar,
loggedEvents = loggedEvents,
version = packageVersion("mice"),
date = Sys.Date())
oldClass(midsobj) <- "mids"
return(midsobj)
}
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