[R] Row and Column positions

2008-10-31 Thread Shubha Vishwanath Karanth 
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

 

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Re: [R] Row and Column positions

2008-10-31 Thread Claudia Beleites 
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

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Claudia Beleites
Dipartimento dei Materiali e delle Risorse Naturali
Università degli Studi di Trieste
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Re: [R] Row and Column positions

2008-10-31 Thread Henrique Dallazuanna 
Try:

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

On Fri, Oct 31, 2008 at 9:17 AM, Shubha Vishwanath Karanth 
[EMAIL PROTECTED] 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
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 http://www.R-project.org/posting-guide.htmlhttp://www.r-project.org/posting-guide.html
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Henrique Dallazuanna
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