[R] missing values

[Spencer Graves]

VAR1[c(11, 13, 14)] <- NA

Is this what you what?
hth.  spencer graves

Adrian Dusa wrote:
> Dear list members,
> 
>  
> 
> I'm relatively new to this list; can anyone tell me how to declare
> missing values once a dataset has been attached?
> 
> For example here:
> 
>  
> 
>    VAR1
> 
> 1     1
> 
> 2     2
> 
> 3     1
> 
> 4     3
> 
> 5     2
> 
> 6     1
> 
> 7     3
> 
> 8     3
> 
> 9     1
> 
> 10    2
> 
> 11   98
> 
> 12    2
> 
> 13   97
> 
> 14   99
> 
> 15   NA
> 
> 16    3
> 
>  
> 
> I would like values 97, 98 and 99 to be treated as missing values.
> 
> I read everything about is.na but I just can't figure out how to do it. 
> 
>  
> 
> Many thanks,
> 
> Adrian
> 
>  
> 
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> Adrian Dusa (adi at roda.ro)
> Romanian Social Data Archive (www.roda.ro)
> 1, Schitu Magureanu Bd.
> 76625 Bucharest sector 5
> Romania
> Tel./Fax: +40 (21) 312.66.18
> 
>  
> 
> 
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> 
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