A polygon defined directly by its vertices
shape.Rdshape is the simplest drawable: the user supplies x and y
coordinates directly, and points is computed trivially from them.
It is most often produced by convert()ing a more complex drawable
(e.g. a blob or twist) down to its raw vertices.
Arguments
- x
Numeric vector of x coordinates.
- y
Numeric vector of y coordinates.
- ...
Arguments passed to
style().