R: Extract a list of arcs from a triangulation object.

arcs {interp} | R Documentation

## 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 <albrecht.gebhardt@aau.at>, Roger Bivand <roger.bivand@nhh.no>

### See Also

`triSht`, `triangles`, `area`

### Examples

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

[Package interp version 1.1-1 Index]