Hi
Why do you post the same question without following Sarah's advice?
You can clearly see that due your HTML posting your data are terrible mess and
we do not have slightest idea what you really want.
So again. Please copy to next mail result of
dput(head(df, 20))
and explain what shall be the result.
And change your mail client to post in plain text.
Cheers
Petr
> -----Original Message-----
> From: R-help [mailto:r-help-bounces at r-project.org] On Behalf Of Ragia
> Ibrahim
> Sent: Sunday, September 06, 2015 7:41 PM
> To: r-help at r-project.org
> Subject: [R] dplyr question
>
> Dear group,
> I have the following data frame df
>
> Measure_id i j id value1 1 5 1 1 2.02 1 5 2
> 1 2.03 1 5 1 2 1.54 1 5 2 2 1.55
> 1 5 1 3 0.06 1 5 2 3 0.07 1 5 1 4 0.08
> 1 5 2 4 1.09 1 5 1 5 1.010 1 5 2 5 2.0..
> ... . . .. ...I want to add a probability column, the prob column
> depends on id grouped by for each ithe rank will be current (value /
> max value ) for the same id for specific i, it would be
> Measure_id i j id value prob1 1 5 1 1 2.0 2/2
> 2 1 5 2 1 2.0 2/2 3 1 5 1 2 1.5
> 1.5/1.5 4 1 5 2 2 1.5 1.5/1.5 5 1 5 1
> 3 0.0 06 1 5 2 3 0.0 07 1 5
> 1 4 0.0 0/1 8 1 5 2 4 1.0 1/1 9
> 1 5 1 5 1.0 1/210 1 5 2 5 2.0 2/3..
> ... . . .. ...
> then I want to add a rank coulmn that rank regarding probability, if
> the probability equal they took the same rank for thesame id belongs to
> the same i, otherwize lower probability took higher rank for examole if
> we have three values for i=7 and for the three values the id is 1 and
> the probability is ( .2,.4,.5) the rank should be 3,2,1
> replying highly appreciatedRagia
> [[alternative HTML version deleted]]
>
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> and provide commented, minimal, self-contained, reproducible code.
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