R help - Oct 2008 - Row and Column positions

Hi R,

 

m=data.frame(a=c(1,NA,5,5),b=c(4,5,6,7),c=c(NA,NA,NA,5))

 

I want to know the methods of getting row and column positions of NA in
the above dataframe. How do I do this?

 

 

Thanks, Shubha

 

This e-mail may contain confidential and/or privileged i...{{dropped:13}}

Try:

which(is.na(m), arr = T)

On Fri, Oct 31, 2008 at 9:17 AM, Shubha Vishwanath Karanth <
shubhak@ambaresearch.com> wrote:
> Hi R,
>
>
>
> m=data.frame(a=c(1,NA,5,5),b=c(4,5,6,7),c=c(NA,NA,NA,5))
>
>
>
> I want to know the methods of getting row and column positions of NA in
> the above dataframe. How do I do this?
>
>
>
>
>
> Thanks, Shubha
>
>
>
> This e-mail may contain confidential and/or privileged i...{{dropped:13}}
>
> ______________________________________________
> 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<http://www.r-project.org/posting-guide.html>
> and provide commented, minimal, self-contained, reproducible code.
>


-- 
Henrique Dallazuanna
Curitiba-Paraná-Brasil
25° 25' 40" S 49° 16' 22" O

	[[alternative HTML version deleted]]

Am Freitag 31 Oktober 2008 12:17:30 schrieb Shubha Vishwanath
Karanth:
> m=data.frame(a=c(1,NA,5,5),b=c(4,5,6,7),c=c(NA,NA,NA,5))
? which

HTH Claudia

-- 
Claudia Beleites
Dipartimento dei Materiali e delle Risorse Naturali
Universit? degli Studi di Trieste
Via Alfonso Valerio 6/a
I-34127 Trieste

phone: +39 (0 40) 5 58-34 47
email: cbeleites at units.it