[R] 'ref' must be an existing level

[peter dalgaard]

Hmm, and levels(m11$prog)? 

(There's a chance that a space has sneaked in, but your HTML mail makes it hard to see column alignment)

-pd

> On 09 Jul 2016, at 12:50 , Shivi Bhatia <shivipmp82 at gmail.com> 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> wrote:
> 
> What does table(m11$prog) tell you?
> -pd
> 
> > On 09 Jul 2016, at 12:29 , Shivi Bhatia <shivipmp82 at gmail.com> wrote:
> >
> > Dear Team,
> >
> > I am running a multinomial logistic regression model for one of the
> > fictitious data before i implement the same on my real data.
> > Here i am trying to predict based some scores and economic group whether a
> > person will go for a diploma, general or honors.
> >
> > The code below:
> > m11$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]]
> >
> > ______________________________________________
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> > 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  Priv: PDalgd at gmail.com
> 
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-- 
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  Priv: PDalgd at gmail.com