I created a circle using geopandas and it returned a shapely polygon:
POLYGON: ((...))
I want this same polygon as a geojson object. I ran across this:
shapely.geometry.mapping(shapelyObject)
which returns this:
{'type': 'Polygon', 'coordinates': (((570909.9247264927, 125477.71811034005)...}
But when I try to map this in mapbox it does not show anything. I think maybe it is not fully a geojson object.
If you don't want to create this dict manually, you can also rely on geopandas
creating it:
In [1]: import shapely.geometry
In [2]: import geopandas
In [3]: shapely_polygon = shapely.geometry.Polygon([(0, 0), (0, 1), (1, 0)])
In [4]: geopandas.GeoSeries([shapely_polygon]).__geo_interface__
Out[4]:
{'bbox': (0.0, 0.0, 1.0, 1.0),
'features': [{'bbox': (0.0, 0.0, 1.0, 1.0),
'geometry': {'coordinates': (((0.0, 0.0),
(0.0, 1.0),
(1.0, 0.0),
(0.0, 0.0)),),
'type': 'Polygon'},
'id': '0',
'properties': {},
'type': 'Feature'}],
'type': 'FeatureCollection'}
(Note that this gives a FeatureCollection and not a single feature.)
Or to a string (or file):
In [4]: geopandas.GeoSeries([shapely_polygon]).to_json()
Out[4]: '{"features": [{"bbox": [0.0, 0.0, 1.0, 1.0], "geometry": {"coordinates": [[[0.0, 0.0], [0.0, 1.0], [1.0, 0.0], [0.0, 0.0]]], "type": "Polygon"}, "properties": {}, "id": "0", "type": "Feature"}], "bbox": [0.0, 0.0, 1.0, 1.0], "type": "FeatureCollection"}'