arcs {interp}

Extract a list of arcs from a triangulation object.

Description

This function extracts a list of arcs from a triangulation object created by tri.mesh.

Usage

arcs(tri.obj)

Arguments

tri.obj

object of class triSht

Details

This function acesses the arcs component of a triangulation object returned by tri.mesh and extracts the arcs contained in this triangulation. This is e.g. used for plotting.

Value

A matrix with two columns "from" and "to" containing the indices of points connected by the arc with the corresponding row index.

Author(s)

Albrecht Gebhardt <[e-mail]>, Roger Bivand <[e-mail]>

See Also

triSht, triangles, area

Examples

data(franke)
tr <- tri.mesh(franke$ds3)
arcs(tr)