Draws bars relevant to breakpoint estimates (point estimate and confidence limits) on the current device
# S3 method for stepmented
lines(x, term, bottom = TRUE, shift=FALSE, conf.level = 0.95, k = 50,
pch = 18, .vcov=NULL, .coef=NULL, ...)
an object of class stepmented.
the stepmented variable of the breakpoints being drawn. It may be unspecified when there is a single stepmented variable.
logical, indicating if the bars should be plotted at the bottom (TRUE) or at the top (FALSE).
logical, indicating if the bars should be `shifted' on the y-axis before plotting. Useful for multiple breakpoints with overlapped confidence intervals.
the confidence level of the confidence intervals for the breakpoints.
a positive integer regulating the vertical position of the drawn bars. See Details.
either an integer specifying a symbol or a single character to be used
in plotting the point estimates of the breakpoints. See points.
The full covariance matrix of estimates. If unspecified (i.e. NULL), the covariance matrix is computed internally by vcov(x).
The regression parameter estimates. If unspecified (i.e. NULL), it is computed internally by coef(x).
further arguments passed to arrows, for instance `col' that
can be a vector.
lines.stepmented simply draws on the current device the point estimates and relevant
confidence limits of the estimated breakpoints from a "stepmented" object. The y coordinates
where the bars are drawn is computed as usr[3]+h if bottom=TRUE or
usr[4]-h when bottom=FALSE, where h=(usr[4]-usr[3])/abs(k) and
usr are the extremes of the user coordinates of the plotting region.
Therefore for larger values of k the bars are plotted on the edges.
plot.stepmented to plot the fitted stepmented lines