R - Option (Global Options)

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Global Option in R

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Management

List

• all options

list = options() 

• one

(list|null)= options(optionName)

Get

getOption('optionName', default = NULL)

Set

• Set the editor and save the previous value

old.o <- options(editor = "nedit")

If then

if(as.logical(getOption("performCleanp", TRUE)))
   cat("do cleanup\n")
   
# or
tmp <- getOption("performCleanup")
if(is.null(tmp))
  tmp <- TRUE
if(tmp)
   cat("do cleanup\n")