greatCircle

描述

¥Description

Calculate great circles routes as LineString or MultiLineString.If the start and end points span the antimeridian, the resulting feature will be split into a MultiLineString.If the start and end positions are the same then a LineString will be returned with duplicate coordinates the length of the npoints option.

参数

¥Parameters

名称	类型	描述
start	坐标系	源点要素
end	坐标系	目标点特性
options?	对象	可选参数（默认 ）
options.properties?	对象	line feature properties (default )
options.npoints?	number	number of points (default 100)
options.offset?	number	offset controls the likelyhood that lines will be split which cross the dateline.The higher the number the more likely.(默认 10)

返回

¥Returns

特性<LineString | MultiLineString> great circle line feature

¥Feature<LineString | MultiLineString> great circle line feature

示例

¥Examples

var start = turf.point([-122, 48]);
var end = turf.point([-77, 39]);

var greatCircle = turf.greatCircle(start, end, {
  properties: { name: "Seattle to DC" },
});

安装

¥Installation

$ npm install @turf/great-circle

import { greatCircle } from "@turf/great-circle";
const result = greatCircle(...);

$ npm install @turf/turf

import * as turf from "@turf/turf";
const result = turf.greatCircle(...);