plant: Plan organ dataset

In segmented: Regression Models with Break-Points / Change-Points Estimation (with Possibly Random Effects)

Plan organ dataset

Description

The plant data frame has 103 rows and 3 columns.

Usage

data(plant)

Format

A data frame with 103 observations on the following 3 variables:

y

measurements of the plant organ.

time

times where measurements took place.

group

three attributes of the plant organ, RKV, RKW, RWC.

Details

Three attributes of a plant organ measured over time where biological reasoning indicates likelihood of multiple breakpoints. The data are scaled to the maximum value for each attribute and all attributes are measured at each time.

Source

The data have been kindly provided by Dr Zongjian Yang at School of Land, Crop and Food Sciences, The University of Queensland, Brisbane, Australia.

Examples

## Not run: 
data(plant)

lattice::xyplot(y~time,groups=group,auto.key=list(space="right"), data=plant)

o<-segreg(y~ 0+group+seg(time, by=group, npsi=2), data=plant)
summary(o)

par(mfrow=c(1,2))
plot(y~time, data=plant)
plot(o, term=1:3, add=TRUE, leg=NA, psi.lines=TRUE) #add the lines to the current plot

plot(o, term=1:3, col=3:5, res.col=3:5, res=TRUE, leg="bottomright")


## End(Not run)

segmented documentation built on April 12, 2025, 1:59 a.m.