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sp (version 2.1-1)

Polygons-class: Class "Polygons"

Description

Collection of objects of class "Polygon"

Arguments

Objects from the Class

Objects can be created by calls to the function Polygons

Slots

Polygons:

Object of class "list"; list with objects of class Polygon-class

plotOrder:

Object of class "integer"; order in which the Polygon objects should be plotted, currently by order of decreasing size

labpt:

Object of class "numeric"; pair of x, y coordinates giving a label point, the label point of the largest polygon component

ID:

Object of class "character"; unique identifier string

area:

Object of class "numeric"; the gross total planar area of the Polygon list but not double-counting holes (changed from 0.9-58 - islands are summed, holes are ignored rather than subtracted); these values are used to make sure that polygons of a smaller area are plotted after polygons of a larger area, does not respect projection as objects of this class have no projection defined

Methods

No methods defined with class "Polygons" in the signature.

Author

Roger Bivand