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Message-ID: <137597854.3222674.1464105256516.JavaMail.yahoo@mail.yahoo.com>
Date: 2016-05-24T15:54:16Z
From: Elahe chalabi
Subject: Factor Variable frequency

Hi all,
I have the following df:


    $ Protocol       : Factor w/ 48 levels "DP FS QTSE SAG",..: 2 3 43 42 31 36 37 30 28 5 ...
    
    $ Speed         : chr  "SLOW" "SLOW" "SLOW" "VerySLOW" ...
How can I get the most frequent Protocol when Speed is "SLOW"?
Thanks for any help!
Elahe