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#' Print an object of class \code{pogit}
#'
#' The default print method for a \code{pogit} object.
#'
#' Returns basic information about the model, the number of observations and
#' covariates used, the number of regression effects subject to selection,
#' MCMC options and the runtime used for the sampling algorithm. See
#' \code{\link{summary.pogit}} for more details.
#'
#' @param x an object of class \code{pogit}
#' @param ... further arguments passed to or from other methods (not used)
#'
#' @author Michaela Dvorzak <m.dvorzak@@gmx.at>
#' @export
print.pogit <- function(x, ...){
stopifnot(class(x) == "pogit")
if (x$family == "logit"){
bin <- "binomial "
if (all(x$data$N == 1)) bin <- ""
}
cat(paste(
switch(as.character(x$BVS),
"TRUE" = "Bayesian variable selection",
"FALSE" = "MCMC"),
"for the", switch(as.character(x$family),
"logit" = paste(bin, "logit", sep=""),
"pogit" = switch(as.character(x$fun),
"select_poisson" = "Pogit",
"select_poissonOD" = "overdispersed Pogit"),
"poisson" = switch(as.character(x$fun),
"select_poisson" = "Poisson",
"select_poissonOD" = "overdispersed Poisson"),
"negbin" = "negative binomial"), "model:\n"))
cat("\nCall:\n")
print(x$call)
cat("\nModel:", length(x$data$y), "observations")
if (x$family %in% c("pogit", "poisson")){
if (x$family == "pogit") cat("\n\n-Poisson:")
cat("\n Covariates:", k <- x$model.pois$d)
cat("\n --- subject to selection:", k - sum(x$model.pois$deltafix))
rid <- as.logical(x$model.pois$ri)
if (rid) rids <- as.logical(1 - x$model.pois$gammafix)
cat("\n Random intercept included:", switch(as.character(rid),
"FALSE" = "no",
"TRUE" = "yes"))
if (rid) cat("\n --- subject to selection:",switch(as.character(rids),
"FALSE" = "no",
"TRUE" = "yes"))
}
if (x$family %in% c("logit", "pogit")){
if (x$family == "pogit") cat("\n\n-Logit:")
cat("\n Covariates:", k <- x$model.logit$d)
cat("\n --- subject to selection:", k - sum(x$model.logit$deltafix))
rid <- as.logical(x$model.logit$ri)
if (rid) rids <- as.logical(1 - x$model.logit$gammafix)
cat("\n Random intercept included:", switch(as.character(rid),
"FALSE" = "no",
"TRUE" = "yes"))
if (rid) cat("\n --- subject to selection:", switch(as.character(rids),
"FALSE" = "no",
"TRUE" = "yes"))
}
if (x$family == "pogit"){
cat(paste("\n\nMethod:",
switch(x$method,
"val" = "validation data",
"infprior" = "informative prior\n")))
if (x$method == "val"){
cat("\nSample of validation data for", nrow(x$data$val), "categories\n")
}
if (x$method == "infprior"){
pM <- as.character(paste("a0[", 0:(x$model.logit$d + x$model.logit$ri),"]", sep=""))
priorSet2 <- round(with(x$prior.logit, c(priorMean = c(unname(m0), unname(aj0)))), 3)
names(priorSet2) <- pM
print(priorSet2)
}
}
if (x$family == "negbin"){
cat("\nCovariates:", k <- x$model.nb$d)
cat("\n--- subject to selection:", k - sum(x$model.nb$deltafix))
}
cat("\n\nMCMC:")
cat("\nM =", x$mcmc$M, "draws after a burn-in of", x$mcmc$burnin)
if (x$BVS) cat("\nBVS started after", x$mcmc$startsel, "iterations")
cat("\nThinning parameter:", x$mcmc$thin)
if(x$family == "negbin"){
cat(paste0("\n\nAcceptance rate for rho: ", x$acc.rho, "%"))
}
cat("\n\nRuntime:")
cat("\ntotal:", round(x$dur$total, 1), "sec.")
cat("\nsince burn-in:", round(x$dur$durM, 1), "sec.")
}
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