polyintern: Internal point of polygon

In GEOmap: Topographic and Geologic Mapping

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<[e-mail]>

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)

GEOmap documentation built on Sept. 1, 2023, 5:09 p.m.