placeOf関数

The country, sea or ocean, continent and nearest city at one point. Countries are the line globe's outlines, Natural Earth at 1:110m. A point inside an outline is country. A point outside every outline and within PLACE_COAST_KM (50 km) of one is near instead: the coarse coast is not reported as a country. The sea is the nearest named sea, gulf, bay or ocean within its reach (SEA_REACH_KM); a smaller water's point is nearer, so it wins over the ocean. It is null while country is set, and null when no water is within reach. The continent is the country's group in the outlines, named as in the sea-names list. Australia the country uses that continent, not the Oceania group. A point whose continent point is at least 2,500 km nearer than its country's group (eastern Russia, French Guiana) uses the nearer one. The city lists are the caller's: without cities, nearestCity is null. Towns under 100,000 are read only when towns is passed. The outlines are indexed on a 15° grid so a call is cheap enough to make about once a second.

import { placeOf } from "@johnmorrisdotca/chikyu-earth/place";

function placeOf(lon: number, lat: number, options?: PlaceOptions): PlaceOf

import { placeOf } from "@johnmorrisdotca/chikyu-earth/place";

console.log(placeOf(2.35, 48.86).country?.code);
console.log(placeOf(-150, 0).sea?.id);
console.log(placeOf(0, 90).country);

FR
pacific-ocean
null