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### sim.synth.R ---
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## Author: Thomas Alexander Gerds
## Created: Jul 7 2022 (13:33)
## Version:
## Last-Updated: Jul 7 2022 (14:26)
## By: Thomas Alexander Gerds
## Update #: 9
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##
### Commentary:
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### Change Log:
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### Code:
#' @title Simulating from a synthesized object
#'
#' @description Simulating from a synthesized object
#' @param object generated with \code{synthesize}
#' @param n sample size
#' @param drop.latent if \code{TRUE} remove the latent event times from the resulting data set.
#' @param ... additional arguments passed on to \code{lava::sim}
#' @export simsynth
#' @examples
#' library(survival)
#' m=synthesize(Surv(time,status)~sex+age+bili,data=pbc)
#' simsynth(m,10,drop.latent=TRUE)
#'
simsynth <- function(object, n= 200, drop.latent=FALSE, ...){
lava.object <- object$lava.object
res <- lava::sim(lava.object,n,...)
labels <- object$labels
for (var in names(labels)){
res[[var]] <- factor(res[[var]])
levels(res[[var]]) <- labels[[var]]
}
# remove variables that would not be in the original data set
if (drop.latent){
# remove latent times
if (length(lava.object$attributes$eventHistory$time$latentTimes)>0)
res <- res[,-match(lava.object$attributes$eventHistory$time$latentTimes,names(res),nomatch=0)]
# remove dummy variables
categories <- object$categories
for (c in categories) {
res <- res[,-grep(c,names(res))[-1]]
}
}
res
}
######################################################################
### sim.synth.R ends here
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