polylist2list {GeoXp} | R Documentation |
The function polylist2list()
extracts the vertices of the polygons from a polylist
object, seperating polygons from each other by 3 rows of NaN.
polylist2list(data)
data |
A polylist object |
The user can then represent the coordinates of sites of a polylist
object
as background map, using the option carte
included in all interactive functions of GeoXp.
It returns a matrix of numeric values with 2 columns (x and y coordinates of the vertices of the polygons) where polygons are seperated from each other by 3 rows of NaN.
Thibault Laurent
Bivand R. et al. (2009), Applied Spatial Data Analysis with R, Springer.
data(eire) eire.contours<-polylist2list(eire.polys.utm)