Plot a tax, subsidy or user constraint over years

A tax, sub(sidy) or constraint imposes a value that varies by year — a tax/subsidy rate (bal) or a constraint bound (rhs). autoplot() draws that control path: the points are the given years and the line is the linear interpolation used between them. These are policy levers, not processes.

Usage

# S3 method for class 'tax'
autoplot(object, years = NULL, ...)

# S3 method for class 'sub'
autoplot(object, years = NULL, ...)

# S3 method for class 'constraint'
autoplot(object, years = NULL, ...)

Arguments

object

A tax, sub or constraint object.

years

Optional integer vector of years to draw the interpolated line over (defaults to the range of the given years).

...

Unused.

Value

A ggplot object (or NULL, invisibly, when there is nothing year-indexed to plot).