sector

Creates a circular sector of a circle of given radius and center Point , between (clockwise) bearing1 and bearing2; 0 bearing is North of center point, positive clockwise.
创建给定半径和中心点的圆的一个扇形，位于(顺时针)bearing1和bearing2之间;0方位为中心点以北，顺时针正。

参数

参数	类型	描述
center	Coord	center point
radius	number	radius of the circle
bearing1	number	angle, in decimal degrees, of the first radius of the sector
bearing2	number	angle, in decimal degrees, of the second radius of the sector
options	Object	可选参数：见下文

options选项

属性	类型	默认值	描述
units	string	kilometers	miles, kilometers, degrees, or radians
steps	number	64	number of steps
properties	Properties	{}	Translate properties to Feature Polygon

返回

Feature <Polygon> - sector polygon

示例

var center = turf.point([-75, 40]);
var radius = 5;
var bearing1 = 25;
var bearing2 = 45;

var sector = turf.sector(center, radius, bearing1, bearing2);