R: Points method for segmented objects

points.segmented {segmented} | R Documentation

## Points method for segmented objects

### Description

Takes a fitted `segmented` object returned by `segmented()` and adds on the current plot the joinpoints of the fitted broken-line relationships.

### Usage

      ## S3 method for class 'segmented'
    points(x, term, interc = TRUE, link = TRUE, rev.sgn=FALSE,
        transf=I, ...)

### Arguments

`x` | an object of class `segmented`.
`term` | the segmented variable of interest. It may be unspecified when there is a single segmented variable.
`interc` | If `TRUE` the computed joinpoints include the model intercept (if it exists).
`link` | when `TRUE` (default), the fitted joinpoints are plotted on the link scale
`rev.sgn` | when `TRUE`, the fitted joinpoints are plotted on the ‘minus’ scale of the current `term` variable. This is useful when a null-constraint has been set on the last slope.
`transf` | A possible function to convert the fitted values before plotting.
`...` | other graphics parameters to pass on to `points()` function.

### Details

We call 'joinpoint' the plane point having as coordinates the breakpoint (on the x scale) and the fitted value of the segmented relationship at that breakpoint (on the y scale). `points.segmented()` simply adds the fitted joinpoints on the current plot. This could be useful to emphasize the changes of the piecewise linear relationship.

### See Also

`plot.segmented` to plot the fitted segmented lines.

### Examples

    ## Not run:
    #see examples in ?plot.segmented

    ## End(Not run)

[Package segmented version 0.5-3.0 Index]