[R] missing values

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From: Adrian Dusa (adi@roda.ro)
Date: Thu 29 May 2003 - 01:35:18 EST


Message-id: <000001c3252e$bf100f90$c13afea9@RODAL>

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@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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