Re: [R] Table orderd by frequencies

From: Dimitris Rizopoulos <dimitris.rizopoulos_at_med.kuleuven.be>
Date: Tue, 22 Jul 2008 10:23:19 +0200

check the following:

a <- factor(sample(letters[1:4], 50, TRUE))

freqs <- table(a)
ind <- order(freqs, decreasing = TRUE)

# reorder the frequencies in the table
freqs[ind]

# reorder the levels of the factor
levels(a) <- names(freqs)[ind]
table(a)

I hope it helps.

Best,
Dimitris



Dimitris Rizopoulos
Biostatistical Centre
School of Public Health
Catholic University of Leuven

Address: Kapucijnenvoer 35, Leuven, Belgium

Tel: +32/(0)16/336899
Fax: +32/(0)16/337015
Web: http://med.kuleuven.be/biostat/
     http://perswww.kuleuven.be/dimitris_rizopoulos/


> Dear List,
>
> I try to order the output of a table by the frequencies of the
> vector I
> am look at.
>
> The object I am looking at is a factor with a lot of levels that
> were
> named only once.
>
> Therefore it would be much easier to order the output by the
> frequencies
> of the levels.
>
> E.g.
>> levels(a)
> "a" "b" "c" "d"
>
> Preferred outcome:
> table(a)
>
> b c a d
> 10 5 1 1
>
> Thank you
>
> ______________________________________________
> R-help_at_r-project.org mailing list
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> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>

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https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. Received on Tue 22 Jul 2008 - 08:30:59 GMT

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