[R] a weird "cut" question

Jeff Newmiller jdnewmil at dcn.davis.ca.us
Thu Dec 8 09:18:28 CET 2011

You picked a data set and ask whether the function parameters can fix the partition. Perhaps you should consider a different data set: rep(47677,9). I think you cannot "fix" the partition without considering the data also. Given that, you may be able to go back and manually identify a partition that works with a particular data set (e.g. use quantiles), but you may be asking too much to automate that for all data sets.
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Erin Hodgess <erinm.hodgess at gmail.com> wrote:

>Dear R People:
>I have the following data:
>> ail.df[,1]
>[1] 47677 47602 47678 47905 47909 47906 47605 47673 47607
>> cut(ail.df[,1],breaks=3)
>[1] (4.76e+04,4.77e+04] (4.76e+04,4.77e+04] (4.76e+04,4.77e+04]
>[4] (4.78e+04,4.79e+04] (4.78e+04,4.79e+04] (4.78e+04,4.79e+04]
>[7] (4.76e+04,4.77e+04] (4.76e+04,4.77e+04] (4.76e+04,4.77e+04]
>Levels: (4.76e+04,4.77e+04] (4.77e+04,4.78e+04] (4.78e+04,4.79e+04]
>so I have cut ail.df[,1] into 3 levels.  However, the second level
>never appears in the data set.
>Is there a way to set cut such that every level appears, please?
>thanks in advance,
>Erin Hodgess
>Associate Professor
>Department of Computer and Mathematical Sciences
>University of Houston - Downtown
>mailto: erinm.hodgess at gmail.com
>R-help at r-project.org mailing list
>PLEASE do read the posting guide
>and provide commented, minimal, self-contained, reproducible code.

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