{"name":"menu","title":"Menu Interaction Function","pagetitle":"Menu Interaction Function — menu","aliases":"menu","author":[],"keywords":["utilities","programming"],"description":"

menu presents the user with a menu of choices labelled from 1\n to the number of choices. To exit without choosing an item one can\n select 0.

","usage":"menu(choices, graphics = FALSE, title = NULL)","arguments":[{"name":"choices","description":"

a character vector of choices

"},{"name":"graphics","description":"

a logical indicating whether a graphics menu should be\n used if available.

"},{"name":"title","description":"

a character string to be used as the title of the menu.\n NULL is also accepted.

"}],"has_args":true,"examples":"\nswitch(menu(c(\"List letters\", \"List LETTERS\")) + 1,\n cat(\"Nothing done\\n\"), letters, LETTERS)\n\n","sections":[],"details":"

If graphics = TRUE and a windowing system is available\n (Windows, macOS or X11 via Tcl/Tk) a listbox widget is\n used, otherwise a text menu. It is an error to use menu in a\n non-interactive session.

Ten or fewer items will be displayed in a single column, more in\n multiple columns if possible within the current display width.

No title is displayed if title is NULL or \"\".

","value":"

The number corresponding to the selected item, or 0 if no choice was\n made.

","seealso":"

select.list, which is used to implement the graphical\n menu, and allows multiple selections.

","references":"

Becker, R. A., Chambers, J. M. and Wilks, A. R. (1988)\n The New S Language.\n Wadsworth & Brooks/Cole.

","package":{"package":"utils","version":"3.4.1"}}

Description

Usage

Arguments

Value

Details

References

See Also

Examples