Re: [R] Missing values in function calls

2010-08-18 Thread Greg Snow
?missing


-- 
Gregory (Greg) L. Snow Ph.D.
Statistical Data Center
Intermountain Healthcare
greg.s...@imail.org
801.408.8111


 -Original Message-
 From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-
 project.org] On Behalf Of vo...@cbox.cz
 Sent: Tuesday, August 17, 2010 6:22 AM
 To: r-help@r-project.org
 Subject: [R] Missing values in function calls
 
 
 Hello,
 I would like to ask you how to determine if function value is missing
 for particular function call. I mean if I define function
 
 f
 
 __
 R-help@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.

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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.


[R] Missing values in function calls

2010-08-17 Thread vojta

Hello,
I would like to ask you how to determine if function value is missing for 
particular function call. I mean if I define function

f

__
R-help@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.


Re: [R] Missing values in function calls

2010-08-17 Thread David Winsemius


On Aug 17, 2010, at 8:22 AM, vo...@cbox.cz wrote:



Hello,
I would like to ask you how to determine if function value is  
missing for particular function call. I mean if I define function




?is.na



f



David Winsemius, MD
West Hartford, CT

__
R-help@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.