R help - Jul 2009 - what is the meaning of this error message?

Hi,
I need your help :: what i the meaning of this error message"Missing value
where true / false needed??"

Thank you 


      
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Without your script we can't figure out what went wrong. 


------------------------------------------------------------------------
----
ir. Thierry Onkelinx
Instituut voor natuur- en bosonderzoek / Research Institute for Nature
and Forest
Cel biometrie, methodologie en kwaliteitszorg / Section biometrics,
methodology and quality assurance
Gaverstraat 4
9500 Geraardsbergen
Belgium
tel. + 32 54/436 185
Thierry.Onkelinx at inbo.be
www.inbo.be

To call in the statistician after the experiment is done may be no more
than asking him to perform a post-mortem examination: he may be able to
say what the experiment died of.
~ Sir Ronald Aylmer Fisher

The plural of anecdote is not data.
~ Roger Brinner

The combination of some data and an aching desire for an answer does not
ensure that a reasonable answer can be extracted from a given body of
data.
~ John Tukey

-----Oorspronkelijk bericht-----
Van: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org]
Namens Inchallah Yarab
Verzonden: vrijdag 31 juli 2009 9:30
Aan: r-help at r-project.org
Onderwerp: [R] what is the meaning of this error message?

Hi,
I need your help :: what i the meaning of this error message"Missing
value where true / false needed??"

Thank you 


      
	[[alternative HTML version deleted]]

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Inchallah Yarab wrote:
> Hi,
> I need your help :: what i the meaning of this error message"Missing
value where true / false needed??"

Probably that in your function call there was a missing value where TRUE 
or FALSE needed?

Uwe Ligges

> Thank you 
> 
> 
>       
> 	[[alternative HTML version deleted]]
> 
> ______________________________________________
> 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.

Inchallah Yarab wrote:
> Hi,
> I need your help :: what i the meaning of this error message"Missing
value where true / false needed??"
>
>   
Hi Inchallah,
This usually happens when you have a conditional (if or while) statement 
like this:

if(var81 == 0) { ... }
while(var73 > 0) { ... }
ifelse(var13, ...)

If one of the variables resolves to NA, you will get that error message.

Jim