Class: GeoJSON

new GeoJSON() [source]

GeoJSON utilities

Static Methods

(static) toGeometry(geoJSON, foreachFnopt) [source]

Convert one or more GeoJSON objects to geometry

var collection = {
     "type": "FeatureCollection",
     "features": [
         { "type": "Feature",
           "geometry": {"type": "Point", "coordinates": [102.0, 0.5]},
           "properties": {"prop0": "value0"}
          },
          { "type": "Feature",
            "geometry": {
                "type": "LineString",
                "coordinates": [
                    [102.0, 0.0], [103.0, 1.0], [104.0, 0.0], [105.0, 1.0]
                ]
            },
            "properties": {
                "prop0": "value0",
                "prop1": 0.0
            }
          },
          { "type": "Feature",
            "geometry": {
                "type": "Polygon",
                "coordinates": [
                    [ [100.0, 0.0], [101.0, 0.0], [101.0, 1.0],
                      [100.0, 1.0], [100.0, 0.0] ]
                ]
            },
            "properties": {
                "prop0": "value0",
                "prop1": {"this": "that"}
            }
         }
     ]
 }
 // A geometry array.
 const geometries = GeoJSON.toGeometry(collection, geometry => { geometry.config('draggable', true); });

Parameter	Type	Description
`geoJSON`	String \| Object \| Array.<Object>	GeoJSON objects or GeoJSON string
`foreachFn` opt	function	callback function for each geometry

Returns:

Geometry|Array.<Geometry>: a geometry array when input is a FeatureCollection

(static) toGeometryAsync(geoJSON, foreachFnopt, countPerTimeopt) [source]

async Convert one or more GeoJSON objects to geometry

GeoJSON.toGeometryAsync(geoJSON).then(geos=>{
   console.log(geos);
})

Parameter	Type	Default	Description
`geoJSON`	String \| Object \| Array.<Object>		GeoJSON objects or GeoJSON string
`foreachFn` opt	function		callback function for each geometry
`countPerTime` opt	Number	2000	Number of graphics converted per time

Returns:

Promise:

(static) fetch(url, countPerTimeopt) [source]

Requesting a large volume geojson file.Solve the problem of main thread blocking

GeoJSON.fetch('https://abc.com/file.geojson',2000).then(geojson=>{
   console.log(geojson);
})

Parameter	Type	Default	Description
`url`	String		GeoJSON file path
`countPerTime` opt	Number	2000	Number of graphics converted per time

Returns:

Promise: