.onLoad <- function(lib, pkg) {
if (Sys.getenv("R_MAP_DATA_DIR") == "") {
Sys.setenv("R_MAP_DATA_DIR" = paste(lib, pkg, "mapdata/", sep="/"))
}
## for now, we keep the option of having a different world map
if (Sys.getenv("R_MAP_DATA_DIR_WORLD") == "") {
Sys.setenv("R_MAP_DATA_DIR_WORLD" = Sys.getenv("R_MAP_DATA_DIR"))
}
library.dynam("maps", pkg, lib)
}
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