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2007 Dec 12
0
Hep on using GAM() in R
...i used? What does these warnings mean?
Q2: As we know, the span is an important role for smoothing, so i try to
choose the optimal span by the AIC criterion. But it seemed that i can't run
it successfully,
My codes are listed below.
hmin<-0.05; hmax<-0.95; hstart<-hmin; nh<-100
hstep<-(hmax-hmin)/(nh-1)
aic.h<- matrix(NA,nrow=nh,ncol=2)
for (i in 1:nh)
{
htry<-hstart+(i-1)*hstep m.gam
<-gam(mark~lo(x,y,span=htry)+lo(lstday2004,span=htry)+lo(slope,span=htry)+lo(ndvi2004,span=htry)+lo(elevation,span=htry)+disbinary,family=binomial(logit),data=point)
aic.h[i,2]...