[R] look up and Missing

[Dimitris Rizopoulos]

try this:

temp.new <- temp[temp$v2 != -9, ]
temp.new


I hope it helps.

Best,
Dimitris


Ashta wrote:
> HI  R-Users
> 
> Assume that I have a data frame 'temp' with several variables (v1,v2,v3,v4,v5.).
> 
>   v1 v2 v3  v4 v5
>    1  2   3   3    6
>    5  2  4    2    0
>    2 -9   5   4    3
>    6  2   1   3    4
> 
> 1, I want to look at the entire row values of when v2 =-9
>    like
>          2 -9   5   4    3
> 
> I wrote
> K<- list(if(temp$v2)==-9))
> 
> I wrote the like this but  it gave me  which is not correct.
>    False false false false false
> 
> 2. I want assign that values  as missing if   v2 = -9.  (ie., I want
> exclude from the analysis
> 
> How do I do it  in R?
> 
> Thanks in advance
> 
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> 

-- 
Dimitris Rizopoulos
Assistant Professor
Department of Biostatistics
Erasmus University Medical Center

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