[R] Predict Function

[Biago]

Hi all - my first time here and am having an issue with the Predict function.

I am using a tutorial as a guide, locate here:
http://www.ats.ucla.edu/STAT/R/dae/mlogit.htm

My code gives this error 

> newdata1$predicted <- predict(mlogit,newdata=newdata1,type="response")
Error in `$<-.data.frame`(`*tmp*`, "predicted", value = c(0.332822934960197, 
: 
  replacement has 810 rows, data has 6

How can I resolve this problem so I can just predict values for the supplied
matrix(newdata1) instead of it trying to use my full dataset?

Here is the full code up to this point.


library(VGAM)
mlogit<- vglm(bcsse$Active~bcsse$Impinteg+bcsse$Hsgradyr,
family=multinomial(), na.action=na.pass)
summary(mlogit)

Impinteg<-c(1,2,3,4,5,6)
Hsgradyr<-c(mean(bcsse$Hsgradyr))
newdata1<-data.frame(Impinteg,Hsgradyr)

newdata1$predicted <- predict(mlogit,newdata=newdata1,type="response")
newdata1


I appreciate all help in advance!
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