Question

Takes a line and returns a line at offset by the specified distance.
获取一条线并返回具有指定距离偏移量的线。

参数

参数	类型	描述
geojson	(Geometry|Feature <(LineString|MultiLineString)>)	input GeoJSON
distance	number	distance to offset the line (can be of negative value)
options	Object	可选参数：见下文

options选项

属性	类型	默认值	描述
units	string	kilometers	can be degrees, radians, miles, kilometers, inches, yards, meters

返回

Feature <(LineString|MultiLineString)> - Line offset from the input line

示例

var line = turf.lineString([[-83, 30], [-84, 36], [-78, 41]], { "stroke": "#F00" });

var offsetLine = turf.lineOffset(line, 2, {units: 'miles'});