[R] look up and Missing

[jim holtman]

Here is how to find out which rows contain -9 and then you can do with
it as you please:

> x
  v1 v2 v3 v4 v5
1  1  2  3  3  6
2  5  2  4  2  0
3  2 -9  5  4  3
4  6  2  1  3  4
> which(apply(x, 1, function(.row) any(.row == -9)))
[1] 3
>
>


On Sun, Nov 8, 2009 at 10:23 AM, Ashta <sewashm at gmail.com> 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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>



-- 
Jim Holtman
Cincinnati, OH
+1 513 646 9390

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