I think switch() should work for you here, but it is not clear how much
flexibility you are trying to have (different tests based on the first
response; different tests based on first, then second response; different tests
based on each successive response).
?switch
For the second question just index the return value:
> let <- letters[1:4]
> let[menu(let)]
1: a
2: b
3: c
4: d
Selection: 3
[1] "c"
Or a bit more polished:
> cat("Choice: ", let[menu(let)], "\n")
1: a
2: b
3: c
4: d
Selection: 4
Choice: d
-------------------------------------
David L Carlson
Department of Anthropology
Texas A&M University
College Station, TX 77840-4352
-----Original Message-----
From: [email protected] [mailto:[email protected]] On
Behalf Of [email protected]
Sent: Monday, September 15, 2014 3:53 AM
To: [email protected]
Subject: [R] apply block of if statements with menu function
Subscribers,
apply block of if statements with menu function
Subscribers,
For a menu:
menu(c('a','b','c','d'))
How to create a function that will apply to specific menu choice
objects? For example:
object1<-function (menuifchoices) {
menu1<-menu(c('a','b','c','d'))
if (menu1==1)
...
menu1a<-menu...
if (menu1a==1)
...
menu2a<-menu...
if (menu2a==1)
...
menu2
<-menu(c('a','b','c','d'))
if (menu1==2)
...
}
The request action is that a user can select a menu option that will
activate a series of "multiple choice" questions, results in "menu1"
being activated without menu2 being activated. If someone could direct
to the relevant terminology, thank you.
Separate question; for a menu:
menu(c('a','b','c','d'))
1: a
2: b
3: c
4: d
Selection: 1
[1] 1
is it possible to change behaviour so that result of the selection is
not the integer, but the original menu choice:
Selection: 1
[1] a
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and provide commented, minimal, self-contained, reproducible code.
______________________________________________
[email protected] mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
