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使用mtcars數據集,我試圖確定mpg的折線迴歸擬合作爲hp和wt的函數,以及斷點。以下是代碼:R - 如何以編程方式在分段函數中獲得斷點?
mpg = mtcars$mpg
wt = mtcars$wt
hp = mtcars$hp
reg = lm (mpg ~ hp +wt)
hp_thresh = 150
wt_thresh = 3
library(segmented)
seg.o = segmented (reg,seg.Z=~hp+wt, psi=list (hp=hp_thresh, wt=wt_thresh))
summary (seg.o)
如何以編程方式獲得斷點?