search for: lnfreq

I am trying to fit a very simple broken stick model using the package "segmented" but I have hit a roadblock. > str(data) 'data.frame': 18 obs. of 2 variables: $ Bin : num 0.25 0.75 1.25 1.75 2.25 2.75 3.25 3.75 4.25 4.75 ... $ LnFREQ: num 5.06 4.23 3.50 3.47 2.83 ... I fit the lm easily: > fit.lm<-lm(LnFREQ~Bin, data=id07) But I keep getting an error message: > fit.seg<-segmented(fit.glm, seg.Z=~Bin, psi=6) Error in cbind(XREG, U, V) : number of rows of matrices must match (see arg 2) I think the problem is...