"xylist", which represents polygons by
their core feature only, a list of lists of vertex
coordinates (see the "Value" section below). The generic
function xylist can deal with the following polygon
classes: "owin"from
package"gpc.poly" from
package "Polygons" from
package "Polygon" and
"SpatialPolygons")xylist(object, ...)## S3 method for class 'owin':
xylist(object, ...)
## S3 method for class 'gpc.poly':
xylist(object, ...)
## S3 method for class 'SpatialPolygons':
xylist(object, reverse = TRUE, ...)
## S3 method for class 'Polygons':
xylist(object, reverse = TRUE, ...)
## S3 method for class 'Polygon':
xylist(object, reverse = TRUE, ...)
## S3 method for class 'default':
xylist(object, ...)
TRUE) indicating if the
vertex order of the xylist/owin convention.xylist to a polygon object, one gets a
simple list, where each component (polygon) is a list of
"x" and "y" coordinates. These represent
vertex coordinates following "owin"
convention (anticlockwise order without repeating any
vertex). The opposite vertex order can be retained for the
reverse=FALSE.xylistxylist."gpc.poly".