Class "SpatialPolygons"

Description

class to hold polygon topology (without attributes)

Objects from the Class

Objects can be created by calls to the function SpatialPolygons

Slots

polygons:

Object of class "list"; list elements are all of class Polygons-class

plotOrder:

Object of class "integer"; integer array giving the order in which objects should be plotted

bbox:

Object of class "matrix"; see Spatial-class

proj4string:

Object of class "CRS"; see CRS-class

Extends

Class "Spatial", directly.

Methods

Methods defined with class "SpatialPolygons" in the signature:

[

signature(obj = "SpatialPolygons"): select subset of (sets of) polygons; NAs are not permitted in the row index

plot

\signature(x = "SpatialPolygons", y = "missing"): plot polygons in SpatialPolygons object

summary

\signature(object = "SpatialPolygons"): summarize object

Note

Author(s)

Roger Bivand

References

See Also

SpatialPolygons

Examples

grd <- GridTopology(c(1,1), c(1,1), c(10,10))
polys <- as.SpatialPolygons.GridTopology(grd)
plot(polys)
text(getSpPPolygonsLabptSlots(polys), labels=getSpPPolygonsIDSlots(polys), cex=0.6)