Hi,
I am getting the following error:
Error in if ((sum > 0 && sums1 > 0 && sums2 > 0) != NA) { :
missing value where TRUE/FALSE needed
I have including my code below for your review:
fitness_1_data
Error: missing value where TRUE/FALSE needed
3 messages · SHASHI SETH, Ulrik Stervbo, John Fox
Dear Shashi, I don't see any code, but I will take a guess anyway: The error tells you that you try to compare a boolean with something that is not (TRUE or FALSE cannot be compared to NA). HTH Ulrik
On Thu, 9 Jun 2016 at 08:55 SHASHI SETH <sethshashi at rediffmail.com> wrote:
Hi,
I am getting the following error:
Error in if ((sum > 0 && sums1 > 0 && sums2 > 0) != NA) { :
missing value where TRUE/FALSE needed
I have including my code below for your review:
fitness_1_data
[[alternative HTML version deleted]]
______________________________________________ R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.
Dear Shashi Seth, The principal problem here is that the "argument" to if() must be logical, while comparing anything to NA always produces NA. The proper way to test for NA is with is.na(). There's potentially something more subtle going on here, however, which is that even if some of the elements of the logical expression in the "call" to if() are NA, the expression may evaluate to FALSE (but never to TRUE) if the non-NA elements imply that it is FALSE. Consider the following examples:
TRUE && FALSE && NA # FALSE regardless of the value of the last element
[1] FALSE
TRUE && TRUE && NA # truth depends on the value of the last element
[1] NA
(TRUE && FALSE && NA) != NA
[1] NA
(TRUE && TRUE && NA) != NA
[1] NA
is.na(TRUE && FALSE && NA)
[1] FALSE
is.na(TRUE && TRUE && NA)
[1] TRUE I hope that this helps, John ----------------------------- John Fox, Professor McMaster University Hamilton, Ontario Canada L8S 4M4 Web: socserv.mcmaster.ca/jfox
-----Original Message-----
From: R-help [mailto:r-help-bounces at r-project.org] On Behalf Of SHASHI SETH
Sent: June 9, 2016 2:53 AM
To: R-help at r-project.org
Subject: [R] Error: missing value where TRUE/FALSE needed
Hi,
I am getting the following error:
Error in if ((sum > 0 && sums1 > 0 && sums2 > 0) != NA) { :
missing value where TRUE/FALSE needed
I have including my code below for your review:
fitness_1_data
[[alternative HTML version deleted]]
______________________________________________ R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.