Hi,
I'm working through practice data in R and I am helped 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
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