transport (version 0.15-4)

wpp: Constructor for the wpp Class

Description

Construct an object of class "wpp" from a matrix of points and a vector of masses.

Usage

wpp(coordinates, mass)

Arguments

coordinates

a matrix specifying the coordinates of the points. Each row corresponds to a point.

mass

a vector of non-negative values specifying the masses at these points.

Author

Dominic Schuhmacher
Timo Wilm

Details

For more detailed explanations of the arguments and other components of the returned object of class "wpp", see wpp-object.

It is legitimate to assign mass 0 to individual points in the arguments. However, when constructing the wpp-object such points are deleted. The coordinates of the deleted points can still be accessed via the attribute zeropoints.

See Also

Description of pp objects.

Examples

m <- matrix(c(1,1,2,2,3,1,4,2),4,2)
a <- pp(m)
print(a)
print.default(a)

if (FALSE) {  
  plot(a)}