[R] Predict Function
h.wickham at gmail.com
Sat Apr 12 23:27:43 CEST 2008
On Sat, Apr 12, 2008 at 1:06 PM, Biago <sgrlfskbm at gmail.com> wrote:
> 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:
> 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.
> mlogit<- vglm(bcsse$Active~bcsse$Impinteg+bcsse$Hsgradyr,
> family=multinomial(), na.action=na.pass)
You probably want:
mlogit<- vglm(Active~Impinteg+Hsgradyr, data = bcsse,
Otherwise predict doesn't know how to match up the column names in
newdata to the variables used in the model.
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