4 messages · R. Michael Weylandt, Arnaud Gaboury, David Winsemius
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.
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
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.
______________________________________________ R-help at r-project.org 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.
TY much.
Works for me.
Arnaud Gaboury
?
A2CT2 Ltd.
-----Original Message-----
From: R. Michael Weylandt [mailto:michael.weylandt at gmail.com]
Sent: jeudi 9 f?vrier 2012 17:47
To: Arnaud Gaboury
Cc: r-help at r-project.org
Subject: Re: [R] ifelse
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
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.
______________________________________________ R-help at r-project.org 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.
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?
cat() returns NULL. Why ar enou not just returning the strings themselves or if you want to see the results as well as assign, then use print() which does return its arguments.
TY for any help Arnaud Gaboury A2CT2 Ltd.
______________________________________________ R-help at r-project.org 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.
David Winsemius, MD West Hartford, CT