[R] Segmented Error Message
arsherma at eco.umass.edu
Tue Apr 26 21:47:50 CEST 2011
I am trying to use the segmented package to determine the break point
in a simple quadratic regression. I am receiving the error "(Some)
estimated psi out of range"
I searched the message board and found others that have had the same
issue, but no clear solutions have been provided. Does anyone know of
a solution to this error?
Here is my model and segmented code.
aclmfit<-lm(caliper~TreeAge + TreeAge2, data=ac2)
ac.seg<-segmented.lm(aclmfit,seg.Z=~TreeAge + TreeAge2,
Thanks for the help,
Alexander R. Sherman
ISA Certified Arborist NE-6472A
Department of Environmental Conservation
University of Massachusetts
160 Holdsworth Way
Amherst, MA 01003
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