[R] 'ref' must be an existing level

[Michael Dewey]

Dear Shivi

Just printing it will not tell you. I did not mean 'Have you spelled it 
correctly?' I meant 'Is there a stray space somewhere?'. Peter has the 
same suspicion.

On 09/07/2016 12:49, Shivi Bhatia wrote:
> Hi Michael,
>
> I did check again and used the print command but it is spelled as honors.
>
> Hi Peter,
> there are only 3 levels : Diploma  general  honors. I have downloaded
> the data set from url :
>
> "http://quantedu.com/wp-content/uploads/2014/05/d1.txt"
>
> On Sat, Jul 9, 2016 at 5:06 PM, Michael Dewey <lists at dewey.myzen.co.uk
> <mailto:lists at dewey.myzen.co.uk>> wrote:
>
>     Dear Shivi
>
>     Are you sure that the level is "honors" and not " honors" or "honors
>     " or something similar?
>
>
>     On 09/07/2016 11:50, Shivi Bhatia wrote:
>
>         Hi Peter,
>         It gives me breakdown of all categories with their respective freq.
>         Diploma     general  honors
>                  50          45         105
>
>         On Sat, Jul 9, 2016 at 4:07 PM, peter dalgaard <pdalgd at gmail.com
>         <mailto:pdalgd at gmail.com>> wrote:
>
>
>             What does table(m11$prog) tell you?
>             -pd
>
>                 On 09 Jul 2016, at 12:29 , Shivi Bhatia
>                 <shivipmp82 at gmail.com <mailto:shivipmp82 at gmail.com>> wrote:
>
>                 Dear Team,
>
>                 I am running a multinomial logistic regression model for
>                 one of the
>                 fictitious data before i implement the same on my real data.
>                 Here i am trying to predict based some scores and
>                 economic group whether
>
>             a
>
>                 person will go for a diploma, general or honors.
>
>                 The code below:
>                 m11$prog2<- relevel(m11$prog, ref = "honors"
>
>                 already loaded the nnet library. However i got the below
>                 error:
>                 Error in relevel.factor(m11$prog, ref = "honors") :
>                  'ref' must be an existing level
>
>                 I have tried searching on SO and nabble but did not find
>                 an answer that
>                 could help.
>
>                 Please suggest what is incorrect. Also checked the class
>                 of the var and
>
>             is
>
>                 a factor variable.
>
>                       [[alternative HTML version deleted]]
>
>                 ______________________________________________
>                 R-help at r-project.org <mailto:R-help at r-project.org>
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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.
>
>
>             --
>             Peter Dalgaard, Professor,
>             Center for Statistics, Copenhagen Business School
>             Solbjerg Plads 3, 2000 Frederiksberg, Denmark
>             Phone: (+45)38153501
>             Office: A 4.23
>             Email: pd.mes at cbs.dk <mailto:pd.mes at cbs.dk>  Priv:
>             PDalgd at gmail.com <mailto:PDalgd at gmail.com>
>
>
>
>
>
>
>
>
>
>
>
>                 [[alternative HTML version deleted]]
>
>         ______________________________________________
>         R-help at r-project.org <mailto:R-help at r-project.org> mailing list
>         -- To UNSUBSCRIBE and more, see
>         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.
>
>
>     --
>     Michael
>     http://www.dewey.myzen.co.uk/home.html
>
>

-- 
Michael
http://www.dewey.myzen.co.uk/home.html