Area
in package
Table of Contents
Methods
- geometry() : mixed
- polygonArea() : mixed
- rad() : mixed
- ringArea() : mixed
- Calculate the approximate area of the polygon were it projected onto the earth. Note that this area will be positive if ring is oriented clockwise, otherwise it will be negative.
Methods
geometry()
public
static geometry(mixed $geojson) : mixed
Parameters
- $geojson : mixed
polygonArea()
public
static polygonArea(mixed $coords) : mixed
Parameters
- $coords : mixed
rad()
public
static rad(mixed $coord) : mixed
Parameters
- $coord : mixed
ringArea()
Calculate the approximate area of the polygon were it projected onto the earth. Note that this area will be positive if ring is oriented clockwise, otherwise it will be negative.
public
static ringArea(mixed $coords) : mixed
Reference: Robert. G. Chamberlain and William H. Duquette, "Some Algorithms for Polygons on a Sphere", JPL Publication 07-03, Jet Propulsion Laboratory, Pasadena, CA, June 2007 http://trs-new.jpl.nasa.gov/dspace/handle/2014/40409
Returns: {float} The approximate signed geodesic area of the polygon in square meters.
Parameters
- $coords : mixed