[R-sig-Geo] predict gam model....

[Manuel Schneider]

Horacio Samaniego <horacio.samaniego <at> gmail.com> writes:

> 
> Hi,
> I'm having some trouble on a very basic operation it seems.... I am
> not successful generating GAM predictions on a grid. I suspect an
> issue with NA's but are not sure what it is. I get the following
> error:
> 
> > preds[["gam1"]]=predict(gam4.1,newdata=clima4.1,type="response")*100
> Error in `[[<-.data.frame`(`*tmp*`, i, value = c(NA, NA, 0.259444360380994,  :
>   replacement has 88486 rows, data has 996705

Not sure whether predict.gam operates on a SGDF.
Have you tried newdata=clima4.1 at data ?

Abw
Manuel

> 
> Any hint on where the discrepancy between rows come from?....
> basically,  don't think that I'm fully understanding the error.
> 
> Thanks,
>