[R] For loop

[Jessica Streicher]

Hello Bikek,

please use dput() next time to provide the data, its easier to use that.

also: looking at the data provided, how would you want to decide which value of the non-unique times to retain? Just take the first one? They aren't all the same.

On 30.11.2012, at 16:59, bibek sharma wrote:

> Hello user,
> I have large data containing  subject id, time and response where
> subjects are measured repeatedly. However some time are duplicates. I
> only want data with unique time points per id. I mean if time is
> repeated, then take only one.
> Here is a sample data.
> 
> id	time 	res
> 1	2	0.64
> 1	3	0.78
> 1	3	6.5
> 1	3	4.5
> 1	4	4
> 1	5	3.4
> 2	10	5.7
> 2	11	5.8
> 2	11	9.3
> 2	11	3.4
> 2	12	3.4
> 2	13	6.7
> 3	3	5.6
> 3	3	3.4
> 3	4	2.3
> 3	5	5.6
> 3	12	9.8
> 3	10	7
> 3	24	6
> 3	16	4
> 
> for 1st subject I want this,
> 
> id	time 	res
> 1	2	0.64
> 1	3	0.78
> 1	4	4
> 1	5	3.4
> Any suggestions are much appreciated!
> Thanks,
> Bikek
> 
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