On Aug 1, 2013, at 18:09 , Jeff Newmiller wrote:
> Your example is not reproducible, so we can only guess what is happening.
> Please read the footer of this (or any other R-help) email and follow those
> instructions. You may also find the discussion at
> http://stackoverflow.com/questions/5963269/how-to-make-a-great-r-reproducible-example
> helpful.
However, eliminating the reuse of newdata2 might help. In particular, if you
accidentally repeat the cbind() step, you _will_ end up with a data frame with
duplicate column names.
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> Docbanks84 <mban...@partners.org> wrote:
>> Hi,
>>
>> I'm working through practice data in R and I am held up on this step. I
>> am
>> not sure why there is an error that claims there is a duplicate
>> subscript
>> for columns?
>>
>> Does anyone know what this means and how I can fix it?
>>
>>>
>> newdata2<-cbind(newdata2,predict(mylogit,newdata=newdata2,type="link",se=TRUE))
>>> newdata2<-within(newdata2,{PredictedProb<-plogis(fit)
>> + LL<-plogis(fit- (1.96 * se.fit))
>> + UL<-plogis(fit + (1.96 *se.fit))
>> + })
>> Error in `[<-.data.frame`(`*tmp*`, nl, value = list(UL =
>> c(0.549206434665668, :
>> duplicate subscripts for columns
>>
>>
>>
>> --
>> View this message in context:
>> http://r.789695.n4.nabble.com/Error-Help-duplicate-tp4672819.html
>> Sent from the R help mailing list archive at Nabble.com.
>>
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>
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