spEllipsoid: Create an ellipsoid as SpatialPolygons object

In eblondel/sputils: A set of utility tools to manipulate spatial objects

Description

Methods to create an ellipsoid as SpatialPolygons object. Spatial ellipsoids can be created from a ellipsoid or SpatialPoints object.

Usage

## S4 method for signature 'ellipsoid'
spEllipsoid(x, proj4string = NA)

## S4 method for signature 'SpatialPoints'
spEllipsoid(x, key = NULL, value = NULL)

Arguments

x	ellipsoid or SpatialPoints* object.
proj4string	CRS object
key	a key representing a column name if x is a SpatialPointsDataFrame object
value	a value repsententing a column filter value, if x is a SpatialPointsDataFrame object

Value

SpatialPolygons

Author(s)

Emmanuel Blondel, [e-mail]

See Also

SpatialPolygons, ellipsoid

Examples

#sample dataset
data(meuse)
coordinates(meuse) <- c("x","y")

#create a spatial ellipsoid
ell <- spEllipsoid(meuse)

#plot
plot(meuse)
plot(ell, add = TRUE, border = "red")

eblondel/sputils documentation built on May 15, 2019, 7:48 p.m.