[R] 'ref' must be an existing level

[peter dalgaard]

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.
> 
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> 
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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