polygonToLine

Converts a Polygon to (Multi)LineString or MultiPolygon to a FeatureCollection of (Multi)LineString.
将多边形转换为(多)线段或将多面体转换为包含(多)线段的FeatureCollection。

参数

参数	类型	描述
polygon	Feature <(Polygon|MultiPolygon)>	Feature to convert
options	Object	可选参数：见下文

options选项

属性	类型	默认值	描述
properties	Object	{}	translates GeoJSON properties to Feature

返回

(FeatureCollection|Feature <(LineString|MultiLinestring)>) - converted (Multi)Polygon to (Multi)LineString

示例

var poly = turf.polygon([[
  [125, -30], // 注意：polygon首尾坐标要一致 
  [145, -30], 
  [145, -20], 
  [125, -20], 
  [125, -30]
]]);

var line = turf.polygonToLine(poly);