romka-chev/geo-area-calculator

Helpers for calculating geographical area of a given polygon in WGS'84 coordinates standart

geo-area-calculator

Вычисление площади полигона в координатах WGS'84. Порт Python-алгоритма на PHP и JS. Статья источник: http://gis-lab.info/qa/polygon-area-sphere-ellipsoid.html

Установка

В корне модуля:

.../geo-area-calculator$ composer install

Если необходимы js-тесты:

.../geo-area-calculator$ npm install

Тесты

PHP

.../geo-area-calculator$ phpunit

JavaScript

.../geo-area-calculator$ npm test

Примеры

JavaScript

alert( FFGeo.getGeoPolygonArea(
			[
				[ -10.812317, 18 ],
				[ 10.812317, -18 ],
				[ 26.565051,  18 ],
				[ 52.622632, -18 ],
				[ 52.622632,  54 ],
				[ 10.812317,  54 ],
				[ -10.812317, 18 ],
			]
) );

PHP

use siddthartha\geo\area\helpers\GeoAreaCalculator;

echo GeoAreaCalculator::getArea(
        [
                [ -10.812317, 18 ],
                [ 10.812317, -18 ],
                [ 26.565051,  18 ],
                [ 52.622632, -18 ],
                [ 52.622632,  54 ],
                [ 10.812317,  54 ],
                [ -10.812317, 18 ],
        ]
);
// 33953235824742.51 (sq.meters)