dissolve

Dissolves a FeatureCollection of polygon features, filtered by an optional property name:value. Note that mulitpolygon features within the collection are not supported
分解Polygon的一个FeatureCollection，通过一个可选的属性name:value来过滤。注意，不支持集合中的MultiPolygon

参数

参数	类型	描述
featureCollection	FeatureCollection <Polygon>	input feature collection to be dissolved
options	Object	可选参数：见下文

options选项

属性	类型	默认值	描述
propertyName	string		features with equals 'propertyName' in

返回

FeatureCollection <Polygon> - a FeatureCollection containing the dissolved polygons

示例

// 注意：polygon首尾坐标要一致
var features = turf.featureCollection([
  turf.polygon([[[0, 0], [0, 1], [1, 1], [1, 0], [0, 0]]], {combine: 'yes'}),
  turf.polygon([[[0, -1], [0, 0], [1, 0], [1, -1], [0,-1]]], {combine: 'yes'}),
  turf.polygon([[[1,-1],[1, 0], [2, 0], [2, -1], [1, -1]]], {combine: 'no'}),
]);

var dissolved = turf.dissolve(features, {propertyName: 'combine'});