[R] Problem with segmented

[Filoche]

Hi everyone.

I'm trying to use the segmented function with the following data:


For instance, I use segmented package as follow:

myreg2 = lm(xy$y ~ xy$x)
mysegmented = segmented(myreg2, seg.Z=~x, psi=c(245000), control =
seg.control(display=FALSE))

Which get me to the following error : 


As a break point, a starting guess of 245000 seems fair.

Anyone has an idea why I'm getting such error?

Regards,
Phil

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