[R] Identifying breakpoints/inflection points?

[dchristop]

You can try this:

library(inflection)
#you have to instsall package inflection first
a<-findiplist(cbind(year),cbind(piproute),1)
a

The answer:
     [,1] [,2]   [,3]
[1,]    5   35 1986.0
[2,]    5   30 1983.5

shows that the total inflection point is between 1983 and 1986, if we treat
data as first concave and then convex, as it can be found from a simple
graph.



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