Nothing
# required packages
requiredPackages <- c("dplyr",
"DT",
"htmlwidgets",
"igraph",
"RColorBrewer",
"shinydashboard",
"shinyjs",
"tm",
"visNetwork",
"wordcloud")
# if app is local print package information
if (isLocal) {
message("=================================================\n",
paste("VOSONDash", paste0("v", VOSONDash::getVOSONDashVer()), "\n"),
paste0(format(Sys.time(), "%d %b %Y %H:%M"), "\n\n"),
paste0(trimws(paste(Sys.getenv("os"), R.Version()$platform)), "\n"),
paste0(R.version.string, "\n"),
paste("R shiny", packageVersion("shiny"), "\n"),
paste("\nHome:", Sys.getenv("HOME"), "\n\n",
"Checking packages...\n"))
}
if (pkgMsgs == FALSE) {
loadedPackages <- sapply(requiredPackages, function(x) {
suppressPackageStartupMessages(require(x, character.only = TRUE))
})
} else {
loadedPackages <- sapply(requiredPackages, function(x) { require(x, character.only = TRUE) })
}
if (isLocal) {
if (any(loadedPackages == FALSE)) {
missingPackages <- names(which(loadedPackages == FALSE))
err_msg <- paste0("Required packages missing.\n",
paste0(sapply(missingPackages, function(x) paste0("- ", x)),
collapse = "\n"),
"\n\nPlease install required packages before using VOSONDash:\n\n")
packageStr <- sapply(missingPackages, function(x) paste0("\"", x, "\""))
err_msg <- paste0(err_msg,
paste0("install.packages(c(", paste0(packageStr, collapse = ","), "))\n"),
"\n")
stop(err_msg, call. = FALSE)
} else {
message("Found all required packages.\n",
"\nStarting VOSONDash...\n")
}
}
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