dear Szymon,
it is a bug (in the new version), thanks. It depends on the flat
underlying relationship you are trying to estimate with a small sample..
I will correct it as soon as possible. Meanwhile you can use
o1<-glm(gpp ~ temp)
os1<-segmented(o1, seg.Z=~temp, psi=15, control=seg.control(n.boot=0,
display=T, it.max=2))
best,
vito
--
====================================
Vito M.R. Muggeo
Dip.to Sc Statist e Matem `Vianelli'
Università di Palermo
viale delle Scienze, edificio 13
90128 Palermo - ITALY
tel: 091 23895240
fax: 091 485726
http://dssm.unipa.it/vmuggeo
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