"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".