Hi All,
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,
psi=list(TreeAge=c(3,4,5), TreeAge2=c(0,16,25)))
Thanks for the help,
Alex
--
Alexander R. Sherman
ISA Certified Arborist NE-6472A
Research Assistant
Department of Environmental Conservation
University of Massachusetts
Room 225
160 Holdsworth Way
Amherst, MA 01003
______________________________________________
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
