Hi, while using package "segmented" (version 0.2-4) by Vita Muggeo to
investigate a possible change point (around time = 222) in admissions
for a specific medical condition I had the following error message:
fit2.seg<-segmented(fit2, seg.Z=~time,psi=222)
Error in segmented.lm(fit2, seg.Z = ~time, psi = 222) :
(Some) estimated psi out of its range
"fit2" is a simple lm fit to time. I have used this package
successfully for related analyses without this error. Having tried
many alternatives to "psi=222" but with the same error, I wondered if
anyone can assist?
Many thanks,
Alan Kelly
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