r - Finding slope before and after breakpoint -


i'm using bfast package in r decompose time series. curious if possible extract slope of trend segment before , after breakpoint (until end or breakpoint)?

the example below taken reference manual.

harvest

the code generate here. 

require(bfast) require(strucchange) require(sandwich) require(forecast) require(raster) require(sp) fit <- bfast(harvest, season="harmonic", max.iter=2) plot(fit, type="trend")

the problem result output objects aren't automatic, in other words, can find values between breakpoints , try formulate slope trend values, process time consuming because have manually find start/end breakpoint values , extract every value in between. ideally, want find easier way identify slope of trend (blue line) before , after available breakpoints multiple time series.

any appreciated, thanks. 

plot(fit, anova = true)

would give 'slope , significance values each identified trend segment'.

interestingly, work when specify: type="trend"


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