[R] 'ref' must be an existing level

[Michael Dewey]

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> 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]]
>>>
>>> ______________________________________________
>>> 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.
>>
>> --
>> 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
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>
> 	[[alternative HTML version deleted]]
>
> ______________________________________________
> 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