[R] ifelse

[R. Michael Weylandt]

cat() returns a null value so it's problematic inside ifelse. Here you
probably need a regular if statement:

if(all(list %in% c(1, 10, 100))) cat("YES\n") else cat("NO\n") # The
== TRUE is redundant.

Michael

On Thu, Feb 9, 2012 at 11:37 AM, Arnaud Gaboury
<arnaud.gaboury at a2ct2.com> wrote:
> Hello,
>
> I need to print a screen message after a test.
>
>>list<-c("10","1","100","10")
>>ifelse(all(list %in% c(1,10,100)==TRUE),cat("YES\n"),cat("NO\n"))
> YES
> Error in ifelse(all(l %in% c(1, 10, 100) == TRUE), cat("YES\n"), cat("NO\n")) :
>  replacement has length zero
>
>
> I have the correct answer, YES, but with an Error.
>
> Why?
>
> TY for any help
>
>
> Arnaud Gaboury
>
> A2CT2 Ltd.
>
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