R: Internal point of polygon

polyintern {GEOmap} | R Documentation

## Internal point of polygon

### Description

Find a central internal point of a polygon

### Usage

    polyintern(P, n = 10, PLOT=FALSE)

### Arguments

`P` | Polygon,xy
`n` | grid dimension over polygon, n by n
`PLOT` | logical, TRUE=plot

### Details

A grid is laid over the polygo, the internal points are extracted and for each one the shortest distance to te perimeter is determined. Then the point with the largest distance is returned.

### Value

`x` | x coordinate of point
`y` | y coordinate of point
`zi` | index of point
`nx` | internal grid points x
`ny` | internal grid points y
`ef` | internal grid points distances to perimeter

### Author(s)

Jonathan M. Lees<jonathan.lees@unc.edu>

### See Also

pline

### Examples

    X=list()
    X$x=c(11.991,11.942,11.891,11.834,11.775,11.725,11.691,
        11.712,11.746,11.804,11.865,11.957,11.991)
    X$y=c(-2.0091,-2.0699,-2.0823,-2.1091,-2.1419,
        -2.1394,-2.1165,-2.0604,-2.0196,-1.9847,-1.9668,-1.9777,-2.0091)

    polyintern(X, n = 10, PLOT=TRUE)

[Package GEOmap version 2.4-0 Index]